/*

Rollup.js v0.36.3
Sun Oct 09 2016 16:03:05 GMT-0400 (EDT) - commit 5344665d7256c7192cb69068635ff0d3f6c6cd8b

https://github.com/rollup/rollup

Released under the MIT License.

*/

'use strict';

Object.defineProperty(exports, '__esModule', { value: true });

var path = require('path'); var fs = require('fs');

var DEBUG = false; var map = new Map;

var timeStartHelper; var timeEndHelper;

if ( typeof process === 'undefined' ) {

timeStartHelper = function timeStartHelper () {
        return window.performance.now();
};

timeEndHelper = function timeEndHelper ( previous ) {
        return window.performance.now() - previous;
};

} else {

timeStartHelper = function timeStartHelper () {
        return process.hrtime();
};

timeEndHelper = function timeEndHelper ( previous ) {
        var hrtime = process.hrtime( previous );
        return hrtime[0] * 1e3 + Math.floor( hrtime[1] / 1e6 );
};

}

function timeStart ( label ) {

if ( !map.has( label ) ) {
        map.set( label, {
                time: 0
        });
}
map.get( label ).start = timeStartHelper();

}

function timeEnd ( label ) {

if ( map.has( label ) ) {
        var item = map.get( label );
        item.time += timeEndHelper( item.start );
}

}

function flushTime ( log ) {

if ( log === void 0 ) log = defaultLog;

for ( var item of map.entries() ) {
        log( item[0], item[1].time );
}
map.clear();

}

function defaultLog ( label, time ) {

if ( DEBUG ) {
        /* eslint-disable no-console */
        console.info( '%dms: %s', time, label );
        /* eslint-enable no-console */
}

}

var absolutePath = /^(?:/|(?:[A-Za-z]:)?)/; var relativePath = /^.?.//;

function isAbsolute ( path ) {

return absolutePath.test( path );

}

function isRelative ( path ) {

return relativePath.test( path );

}

function normalize ( path ) {

return path.replace( /\\/g, '/' );

}

function mkdirpath ( path$$ ) {

var dir = path.dirname( path$$ );
try {
        fs.readdirSync( dir );
} catch ( err ) {
        mkdirpath( dir );
        fs.mkdirSync( dir );
}

}

function isFile ( file ) {

try {
        var stats = fs.statSync( file );
        return stats.isFile();
} catch ( err ) {
        return false;
}

}

function writeFile ( dest, data ) {

return new Promise( function ( fulfil, reject ) {
        mkdirpath( dest );

        fs.writeFile( dest, data, function (err) {
                if ( err ) {
                        reject( err );
                } else {
                        fulfil();
                }
        });
});

}

var readdirSync = fs.readdirSync; var readFileSync = fs.readFileSync;

var keys = Object.keys;

function blank () {

return Object.create( null );

}

function forOwn ( object, func ) {

Object.keys( object ).forEach( function (key) { return func( object[ key ], key ); } );

}

function assign ( target ) {

var sources = [], len = arguments.length - 1;
while ( len-- > 0 ) sources[ len ] = arguments[ len + 1 ];

sources.forEach( function (source) {
        for ( var key in source ) {
                if ( source.hasOwnProperty( key ) ) target[ key ] = source[ key ];
        }
});

return target;

}

var isArray = Array.isArray;

// used for cloning ASTs. Not for use with cyclical structures! function deepClone ( obj ) {

if ( !obj ) return obj;
if ( typeof obj !== 'object' ) return obj;

if ( isArray( obj ) ) {
        var clone$1 = new Array( obj.length );
        for ( var i = 0; i < obj.length; i += 1 ) clone$1[i] = deepClone( obj[i] );
        return clone$1;
}

var clone = {};
for ( var key in obj ) {
        clone[ key ] = deepClone( obj[ key ] );
}

return clone;

}

function mapSequence ( array, fn ) {

var results = [];
var promise = Promise.resolve();

function next ( member, i ) {
        return fn( member ).then( function (value) { return results[i] = value; } );
}

var loop = function ( i ) {
        promise = promise.then( function () { return next( array[i], i ); } );
};

for ( var i = 0; i < array.length; i += 1 ) loop( i );

return promise.then( function () { return results; } );

}

function validateKeys ( actualKeys, allowedKeys ) {

var i = actualKeys.length;

while ( i-- ) {
        var key = actualKeys[i];

        if ( allowedKeys.indexOf( key ) === -1 ) {
                return new Error(
                        ("Unexpected key '" + key + "' found, expected one of: " + (allowedKeys.join( ', ' )))
                );
        }
}

}

// this looks ridiculous, but it prevents sourcemap tooling from mistaking // this for an actual sourceMappingURL var SOURCEMAPPING_URL = 'sourceMa'; SOURCEMAPPING_URL += 'ppingURL';

var SOURCEMAPPING_URL$1 = SOURCEMAPPING_URL;

var charToInteger = {}; var integerToChar = {};

'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/='.split( '' ).forEach( function ( char, i ) {

charToInteger[ char ] = i;
integerToChar[ i ] = char;

});

function decode$1 ( string ) {

var result = [],
        len = string.length,
        i,
        hasContinuationBit,
        shift = 0,
        value = 0,
        integer,
        shouldNegate;

for ( i = 0; i < len; i += 1 ) {
        integer = charToInteger[ string[i] ];

        if ( integer === undefined ) {
                throw new Error( 'Invalid character (' + string[i] + ')' );
        }

        hasContinuationBit = integer & 32;

        integer &= 31;
        value += integer << shift;

        if ( hasContinuationBit ) {
                shift += 5;
        } else {
                shouldNegate = value & 1;
                value >>= 1;

                result.push( shouldNegate ? -value : value );

                // reset
                value = shift = 0;
        }
}

return result;

}

function encode$1 ( value ) {

var result, i;

if ( typeof value === 'number' ) {
        result = encodeInteger( value );
} else {
        result = '';
        for ( i = 0; i < value.length; i += 1 ) {
                result += encodeInteger( value[i] );
        }
}

return result;

}

function encodeInteger ( num ) {

var result = '', clamped;

if ( num < 0 ) {
        num = ( -num << 1 ) | 1;
} else {
        num <<= 1;
}

do {
        clamped = num & 31;
        num >>= 5;

        if ( num > 0 ) {
                clamped |= 32;
        }

        result += integerToChar[ clamped ];
} while ( num > 0 );

return result;

}

function decodeSegments(encodedSegments) {

var i = encodedSegments.length;
var segments = new Array(i);

while (i--) {
        segments[i] = decode$1(encodedSegments[i]);
}return segments;

}

function decode(mappings) {

var sourceFileIndex = 0; // second field
var sourceCodeLine = 0; // third field
var sourceCodeColumn = 0; // fourth field
var nameIndex = 0; // fifth field

var lines = mappings.split(';');
var numLines = lines.length;
var decoded = new Array(numLines);

var i = undefined;
var j = undefined;
var line = undefined;
var generatedCodeColumn = undefined;
var decodedLine = undefined;
var segments = undefined;
var segment = undefined;
var result = undefined;

for (i = 0; i < numLines; i += 1) {
        line = lines[i];

        generatedCodeColumn = 0; // first field - reset each time
        decodedLine = [];

        segments = decodeSegments(line.split(','));

        for (j = 0; j < segments.length; j += 1) {
                segment = segments[j];

                if (!segment.length) {
                        break;
                }

                generatedCodeColumn += segment[0];

                result = [generatedCodeColumn];
                decodedLine.push(result);

                if (segment.length === 1) {
                        // only one field!
                        continue;
                }

                sourceFileIndex += segment[1];
                sourceCodeLine += segment[2];
                sourceCodeColumn += segment[3];

                result.push(sourceFileIndex, sourceCodeLine, sourceCodeColumn);

                if (segment.length === 5) {
                        nameIndex += segment[4];
                        result.push(nameIndex);
                }
        }

        decoded[i] = decodedLine;
}

return decoded;

}

function encode(decoded) {

var offsets = {
        generatedCodeColumn: 0,
        sourceFileIndex: 0, // second field
        sourceCodeLine: 0, // third field
        sourceCodeColumn: 0, // fourth field
        nameIndex: 0 // fifth field
};

return decoded.map(function (line) {
        offsets.generatedCodeColumn = 0; // first field - reset each time
        return line.map(encodeSegment).join(',');
}).join(';');

function encodeSegment(segment) {
        if (!segment.length) {
                return segment;
        }

        var result = new Array(segment.length);

        result[0] = segment[0] - offsets.generatedCodeColumn;
        offsets.generatedCodeColumn = segment[0];

        if (segment.length === 1) {
                // only one field!
                return encode$1(result);
        }

        result[1] = segment[1] - offsets.sourceFileIndex;
        result[2] = segment[2] - offsets.sourceCodeLine;
        result[3] = segment[3] - offsets.sourceCodeColumn;

        offsets.sourceFileIndex = segment[1];
        offsets.sourceCodeLine = segment[2];
        offsets.sourceCodeColumn = segment[3];

        if (segment.length === 5) {
                result[4] = segment[4] - offsets.nameIndex;
                offsets.nameIndex = segment[4];
        }

        return encode$1(result);
}

}

var charToInteger$1 = {}; var integerToChar$1 = {};

'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/='.split( '' ).forEach( function ( char, i ) {

charToInteger$1[ char ] = i;
integerToChar$1[ i ] = char;

});

function encode$1$1 ( value ) {

var result, i;

if ( typeof value === 'number' ) {
        result = encodeInteger$1( value );
} else {
        result = '';
        for ( i = 0; i < value.length; i += 1 ) {
                result += encodeInteger$1( value[i] );
        }
}

return result;

}

function encodeInteger$1 ( num ) {

var result = '', clamped;

if ( num < 0 ) {
        num = ( -num << 1 ) | 1;
} else {
        num <<= 1;
}

do {
        clamped = num & 31;
        num >>= 5;

        if ( num > 0 ) {
                clamped |= 32;
        }

        result += integerToChar$1[ clamped ];
} while ( num > 0 );

return result;

}

function Chunk ( start, end, content ) {

this.start = start;
this.end = end;
this.original = content;

this.intro = '';
this.outro = '';

this.content = content;
this.storeName = false;
this.edited = false;

// we make these non-enumerable, for sanity while debugging
Object.defineProperties( this, {
        previous: { writable: true, value: null },
        next: { writable: true, value: null }
});

}

Chunk.prototype = {

append: function append ( content ) {
        this.outro += content;
},

clone: function clone () {
        var chunk = new Chunk( this.start, this.end, this.original );

        chunk.intro = this.intro;
        chunk.outro = this.outro;
        chunk.content = this.content;
        chunk.storeName = this.storeName;
        chunk.edited = this.edited;

        return chunk;
},

contains: function contains ( index ) {
        return this.start < index && index < this.end;
},

eachNext: function eachNext ( fn ) {
        var chunk = this;
        while ( chunk ) {
                fn( chunk );
                chunk = chunk.next;
        }
},

eachPrevious: function eachPrevious ( fn ) {
        var chunk = this;
        while ( chunk ) {
                fn( chunk );
                chunk = chunk.previous;
        }
},

edit: function edit ( content, storeName ) {
        this.content = content;
        this.storeName = storeName;

        this.edited = true;

        return this;
},

prepend: function prepend ( content ) {
        this.intro = content + this.intro;
},

split: function split ( index ) {
        var sliceIndex = index - this.start;

        var originalBefore = this.original.slice( 0, sliceIndex );
        var originalAfter = this.original.slice( sliceIndex );

        this.original = originalBefore;

        var newChunk = new Chunk( index, this.end, originalAfter );
        newChunk.outro = this.outro;
        this.outro = '';

        this.end = index;

        if ( this.edited ) {
                // TODO is this block necessary?...
                newChunk.edit( '', false );
                this.content = '';
        } else {
                this.content = originalBefore;
        }

        newChunk.next = this.next;
        if ( newChunk.next ) newChunk.next.previous = newChunk;
        newChunk.previous = this;
        this.next = newChunk;

        return newChunk;
},

toString: function toString () {
        return this.intro + this.content + this.outro;
},

trimEnd: function trimEnd ( rx ) {
        this.outro = this.outro.replace( rx, '' );
        if ( this.outro.length ) return true;

        var trimmed = this.content.replace( rx, '' );

        if ( trimmed.length ) {
                if ( trimmed !== this.content ) {
                        this.split( this.start + trimmed.length ).edit( '', false );
                }

                return true;
        } else {
                this.edit( '', false );

                this.intro = this.intro.replace( rx, '' );
                if ( this.intro.length ) return true;
        }
},

trimStart: function trimStart ( rx ) {
        this.intro = this.intro.replace( rx, '' );
        if ( this.intro.length ) return true;

        var trimmed = this.content.replace( rx, '' );

        if ( trimmed.length ) {
                if ( trimmed !== this.content ) {
                        this.split( this.end - trimmed.length );
                        this.edit( '', false );
                }

                return true;
        } else {
                this.edit( '', false );

                this.outro = this.outro.replace( rx, '' );
                if ( this.outro.length ) return true;
        }
}

};

var _btoa;

if ( typeof window !== 'undefined' && typeof window.btoa === 'function' ) {

_btoa = window.btoa;

} else if ( typeof Buffer === 'function' ) {

_btoa = function (str) { return new Buffer( str ).toString( 'base64' ); };

} else {

_btoa = function () {
        throw new Error( 'Unsupported environment: `window.btoa` or `Buffer` should be supported.' );
};

}

var btoa = _btoa;

function SourceMap ( properties ) {

this.version = 3;

this.file           = properties.file;
this.sources        = properties.sources;
this.sourcesContent = properties.sourcesContent;
this.names          = properties.names;
this.mappings       = properties.mappings;

}

SourceMap.prototype = {

toString: function toString () {
        return JSON.stringify( this );
},

toUrl: function toUrl () {
        return 'data:application/json;charset=utf-8;base64,' + btoa( this.toString() );
}

};

function guessIndent ( code ) {

var lines = code.split( '\n' );

var tabbed = lines.filter( function (line) { return /^\t+/.test( line ); } );
var spaced = lines.filter( function (line) { return /^ {2,}/.test( line ); } );

if ( tabbed.length === 0 && spaced.length === 0 ) {
        return null;
}

// More lines tabbed than spaced? Assume tabs, and
// default to tabs in the case of a tie (or nothing
// to go on)
if ( tabbed.length >= spaced.length ) {
        return '\t';
}

// Otherwise, we need to guess the multiple
var min = spaced.reduce( function ( previous, current ) {
        var numSpaces = /^ +/.exec( current )[0].length;
        return Math.min( numSpaces, previous );
}, Infinity );

return new Array( min + 1 ).join( ' ' );

}

function getLocator ( source ) {

var originalLines = source.split( '\n' );

var start = 0;
var lineRanges = originalLines.map( function ( line, i ) {
        var end = start + line.length + 1;
        var range = { start: start, end: end, line: i };

        start = end;
        return range;
});

var i = 0;

function rangeContains ( range, index ) {
        return range.start <= index && index < range.end;
}

function getLocation ( range, index ) {
        return { line: range.line, column: index - range.start };
}

return function locate ( index ) {
        var range = lineRanges[i];

        var d = index >= range.end ? 1 : -1;

        while ( range ) {
                if ( rangeContains( range, index ) ) return getLocation( range, index );

                i += d;
                range = lineRanges[i];
        }
};

}

var nonWhitespace = /S/;

function encodeMappings ( original, intro, outro, chunk, hires, sourcemapLocations, sourceIndex, offsets, names ) {

var rawLines = [];

var generatedCodeLine = intro.split( '\n' ).length - 1;
var rawSegments = rawLines[ generatedCodeLine ] = [];

var generatedCodeColumn = 0;

var locate = getLocator( original );

function addEdit ( content, original, loc, nameIndex, i ) {
        if ( i || ( content.length && nonWhitespace.test( content ) ) ) {
                rawSegments.push({
                        generatedCodeLine: generatedCodeLine,
                        generatedCodeColumn: generatedCodeColumn,
                        sourceCodeLine: loc.line,
                        sourceCodeColumn: loc.column,
                        sourceCodeName: nameIndex,
                        sourceIndex: sourceIndex
                });
        }

        var lines = content.split( '\n' );
        var lastLine = lines.pop();

        if ( lines.length ) {
                generatedCodeLine += lines.length;
                rawLines[ generatedCodeLine ] = rawSegments = [];
                generatedCodeColumn = lastLine.length;
        } else {
                generatedCodeColumn += lastLine.length;
        }

        lines = original.split( '\n' );
        lastLine = lines.pop();

        if ( lines.length ) {
                loc.line += lines.length;
                loc.column = lastLine.length;
        } else {
                loc.column += lastLine.length;
        }
}

function addUneditedChunk ( chunk, loc ) {
        var originalCharIndex = chunk.start;
        var first = true;

        while ( originalCharIndex < chunk.end ) {
                if ( hires || first || sourcemapLocations[ originalCharIndex ] ) {
                        rawSegments.push({
                                generatedCodeLine: generatedCodeLine,
                                generatedCodeColumn: generatedCodeColumn,
                                sourceCodeLine: loc.line,
                                sourceCodeColumn: loc.column,
                                sourceCodeName: -1,
                                sourceIndex: sourceIndex
                        });
                }

                if ( original[ originalCharIndex ] === '\n' ) {
                        loc.line += 1;
                        loc.column = 0;
                        generatedCodeLine += 1;
                        rawLines[ generatedCodeLine ] = rawSegments = [];
                        generatedCodeColumn = 0;
                } else {
                        loc.column += 1;
                        generatedCodeColumn += 1;
                }

                originalCharIndex += 1;
                first = false;
        }
}

var hasContent = false;

while ( chunk ) {
        var loc = locate( chunk.start );

        if ( chunk.intro.length ) {
                addEdit( chunk.intro, '', loc, -1, hasContent );
        }

        if ( chunk.edited ) {
                addEdit( chunk.content, chunk.original, loc, chunk.storeName ? names.indexOf( chunk.original ) : -1, hasContent );
        } else {
                addUneditedChunk( chunk, loc );
        }

        if ( chunk.outro.length ) {
                addEdit( chunk.outro, '', loc, -1, hasContent );
        }

        if ( chunk.content || chunk.intro || chunk.outro ) hasContent = true;

        var nextChunk = chunk.next;
        chunk = nextChunk;
}

offsets.sourceIndex = offsets.sourceIndex || 0;
offsets.sourceCodeLine = offsets.sourceCodeLine || 0;
offsets.sourceCodeColumn = offsets.sourceCodeColumn || 0;
offsets.sourceCodeName = offsets.sourceCodeName || 0;

var outroSemis = outro.split( '\n' ).map( function () { return ''; } ).join( ';' );

var encoded = rawLines.map( function (segments) {
        var generatedCodeColumn = 0;

        return segments.map( function (segment) {
                var arr = [
                        segment.generatedCodeColumn - generatedCodeColumn,
                        segment.sourceIndex - offsets.sourceIndex,
                        segment.sourceCodeLine - offsets.sourceCodeLine,
                        segment.sourceCodeColumn - offsets.sourceCodeColumn
                ];

                generatedCodeColumn = segment.generatedCodeColumn;
                offsets.sourceIndex = segment.sourceIndex;
                offsets.sourceCodeLine = segment.sourceCodeLine;
                offsets.sourceCodeColumn = segment.sourceCodeColumn;

                if ( ~segment.sourceCodeName ) {
                        arr.push( segment.sourceCodeName - offsets.sourceCodeName );
                        offsets.sourceCodeName = segment.sourceCodeName;
                }

                return encode$1$1( arr );
        }).join( ',' );
}).join( ';' ) + outroSemis;

return encoded;

}

function getRelativePath ( from, to ) {

var fromParts = from.split( /[\/\\]/ );
var toParts = to.split( /[\/\\]/ );

fromParts.pop(); // get dirname

while ( fromParts[0] === toParts[0] ) {
        fromParts.shift();
        toParts.shift();
}

if ( fromParts.length ) {
        var i = fromParts.length;
        while ( i-- ) fromParts[i] = '..';
}

return fromParts.concat( toParts ).join( '/' );

}

var toString = Object.prototype.toString;

function isObject ( thing ) {

return toString.call( thing ) === '[object Object]';

}

function MagicString ( string, options ) {

if ( options === void 0 ) options = {};

var chunk = new Chunk( 0, string.length, string );

Object.defineProperties( this, {
        original:              { writable: true, value: string },
        outro:                 { writable: true, value: '' },
        intro:                 { writable: true, value: '' },
        firstChunk:            { writable: true, value: chunk },
        lastChunk:             { writable: true, value: chunk },
        lastSearchedChunk:     { writable: true, value: chunk },
        byStart:               { writable: true, value: {} },
        byEnd:                 { writable: true, value: {} },
        filename:              { writable: true, value: options.filename },
        indentExclusionRanges: { writable: true, value: options.indentExclusionRanges },
        sourcemapLocations:    { writable: true, value: {} },
        storedNames:           { writable: true, value: {} },
        indentStr:             { writable: true, value: guessIndent( string ) }
});

if ( false ) {}

this.byStart[ 0 ] = chunk;
this.byEnd[ string.length ] = chunk;

}

MagicString.prototype = {

addSourcemapLocation: function addSourcemapLocation ( char ) {
        this.sourcemapLocations[ char ] = true;
},

append: function append ( content ) {
        if ( typeof content !== 'string' ) throw new TypeError( 'outro content must be a string' );

        this.outro += content;
        return this;
},

clone: function clone () {
        var cloned = new MagicString( this.original, { filename: this.filename });

        var originalChunk = this.firstChunk;
        var clonedChunk = cloned.firstChunk = cloned.lastSearchedChunk = originalChunk.clone();

        while ( originalChunk ) {
                cloned.byStart[ clonedChunk.start ] = clonedChunk;
                cloned.byEnd[ clonedChunk.end ] = clonedChunk;

                var nextOriginalChunk = originalChunk.next;
                var nextClonedChunk = nextOriginalChunk && nextOriginalChunk.clone();

                if ( nextClonedChunk ) {
                        clonedChunk.next = nextClonedChunk;
                        nextClonedChunk.previous = clonedChunk;

                        clonedChunk = nextClonedChunk;
                }

                originalChunk = nextOriginalChunk;
        }

        cloned.lastChunk = clonedChunk;

        if ( this.indentExclusionRanges ) {
                cloned.indentExclusionRanges = typeof this.indentExclusionRanges[0] === 'number' ?
                        [ this.indentExclusionRanges[0], this.indentExclusionRanges[1] ] :
                        this.indentExclusionRanges.map( function (range) { return [ range.start, range.end ]; } );
        }

        Object.keys( this.sourcemapLocations ).forEach( function (loc) {
                cloned.sourcemapLocations[ loc ] = true;
        });

        return cloned;
},

generateMap: function generateMap ( options ) {
        options = options || {};

        var names = Object.keys( this.storedNames );

        if ( false ) {}
        var map = new SourceMap({
                file: ( options.file ? options.file.split( /[\/\\]/ ).pop() : null ),
                sources: [ options.source ? getRelativePath( options.file || '', options.source ) : null ],
                sourcesContent: options.includeContent ? [ this.original ] : [ null ],
                names: names,
                mappings: this.getMappings( options.hires, 0, {}, names )
        });
        if ( false ) {}

        return map;
},

getIndentString: function getIndentString () {
        return this.indentStr === null ? '\t' : this.indentStr;
},

getMappings: function getMappings ( hires, sourceIndex, offsets, names ) {
        return encodeMappings( this.original, this.intro, this.outro, this.firstChunk, hires, this.sourcemapLocations, sourceIndex, offsets, names );
},

indent: function indent ( indentStr, options ) {
        var this$1 = this;

        var pattern = /^[^\r\n]/gm;

        if ( isObject( indentStr ) ) {
                options = indentStr;
                indentStr = undefined;
        }

        indentStr = indentStr !== undefined ? indentStr : ( this.indentStr || '\t' );

        if ( indentStr === '' ) return this; // noop

        options = options || {};

        // Process exclusion ranges
        var isExcluded = {};

        if ( options.exclude ) {
                var exclusions = typeof options.exclude[0] === 'number' ? [ options.exclude ] : options.exclude;
                exclusions.forEach( function (exclusion) {
                        for ( var i = exclusion[0]; i < exclusion[1]; i += 1 ) {
                                isExcluded[i] = true;
                        }
                });
        }

        var shouldIndentNextCharacter = options.indentStart !== false;
        var replacer = function (match) {
                if ( shouldIndentNextCharacter ) return ("" + indentStr + match);
                shouldIndentNextCharacter = true;
                return match;
        };

        this.intro = this.intro.replace( pattern, replacer );

        var charIndex = 0;

        var chunk = this.firstChunk;

        while ( chunk ) {
                var end = chunk.end;

                if ( chunk.edited ) {
                        if ( !isExcluded[ charIndex ] ) {
                                chunk.content = chunk.content.replace( pattern, replacer );

                                if ( chunk.content.length ) {
                                        shouldIndentNextCharacter = chunk.content[ chunk.content.length - 1 ] === '\n';
                                }
                        }
                } else {
                        charIndex = chunk.start;

                        while ( charIndex < end ) {
                                if ( !isExcluded[ charIndex ] ) {
                                        var char = this$1.original[ charIndex ];

                                        if ( char === '\n' ) {
                                                shouldIndentNextCharacter = true;
                                        } else if ( char !== '\r' && shouldIndentNextCharacter ) {
                                                shouldIndentNextCharacter = false;

                                                if ( charIndex === chunk.start ) {
                                                        chunk.prepend( indentStr );
                                                } else {
                                                        var rhs = chunk.split( charIndex );
                                                        rhs.prepend( indentStr );

                                                        this$1.byStart[ charIndex ] = rhs;
                                                        this$1.byEnd[ charIndex ] = chunk;

                                                        chunk = rhs;
                                                }
                                        }
                                }

                                charIndex += 1;
                        }
                }

                charIndex = chunk.end;
                chunk = chunk.next;
        }

        this.outro = this.outro.replace( pattern, replacer );

        return this;
},

insert: function insert () {
        throw new Error( 'magicString.insert(...) is deprecated. Use insertRight(...) or insertLeft(...)' );
},

insertLeft: function insertLeft ( index, content ) {
        if ( typeof content !== 'string' ) throw new TypeError( 'inserted content must be a string' );

        if ( false ) {}

        this._split( index );

        var chunk = this.byEnd[ index ];

        if ( chunk ) {
                chunk.append( content );
        } else {
                this.intro += content;
        }

        if ( false ) {}
        return this;
},

insertRight: function insertRight ( index, content ) {
        if ( typeof content !== 'string' ) throw new TypeError( 'inserted content must be a string' );

        if ( false ) {}

        this._split( index );

        var chunk = this.byStart[ index ];

        if ( chunk ) {
                chunk.prepend( content );
        } else {
                this.outro += content;
        }

        if ( false ) {}
        return this;
},

move: function move ( start, end, index ) {
        if ( index >= start && index <= end ) throw new Error( 'Cannot move a selection inside itself' );

        if ( false ) {}

        this._split( start );
        this._split( end );
        this._split( index );

        var first = this.byStart[ start ];
        var last = this.byEnd[ end ];

        var oldLeft = first.previous;
        var oldRight = last.next;

        var newRight = this.byStart[ index ];
        if ( !newRight && last === this.lastChunk ) return this;
        var newLeft = newRight ? newRight.previous : this.lastChunk;

        if ( oldLeft ) oldLeft.next = oldRight;
        if ( oldRight ) oldRight.previous = oldLeft;

        if ( newLeft ) newLeft.next = first;
        if ( newRight ) newRight.previous = last;

        if ( !first.previous ) this.firstChunk = last.next;
        if ( !last.next ) {
                this.lastChunk = first.previous;
                this.lastChunk.next = null;
        }

        first.previous = newLeft;
        last.next = newRight;

        if ( !newLeft ) this.firstChunk = first;
        if ( !newRight ) this.lastChunk = last;

        if ( false ) {}
        return this;
},

overwrite: function overwrite ( start, end, content, storeName ) {
        var this$1 = this;

        if ( typeof content !== 'string' ) throw new TypeError( 'replacement content must be a string' );

        while ( start < 0 ) start += this$1.original.length;
        while ( end < 0 ) end += this$1.original.length;

        if ( end > this.original.length ) throw new Error( 'end is out of bounds' );
        if ( start === end ) throw new Error( 'Cannot overwrite a zero-length range – use insertLeft or insertRight instead' );

        if ( false ) {}

        this._split( start );
        this._split( end );

        if ( storeName ) {
                var original = this.original.slice( start, end );
                this.storedNames[ original ] = true;
        }

        var first = this.byStart[ start ];
        var last = this.byEnd[ end ];

        if ( first ) {
                first.edit( content, storeName );

                if ( first !== last ) {
                        first.outro = '';

                        var chunk = first.next;
                        while ( chunk !== last ) {
                                chunk.edit( '', false );
                                chunk.intro = chunk.outro = '';
                                chunk = chunk.next;
                        }

                        chunk.edit( '', false );
                        chunk.intro = '';
                }
        }

        else {
                // must be inserting at the end
                var newChunk = new Chunk( start, end, '' ).edit( content, storeName );

                // TODO last chunk in the array may not be the last chunk, if it's moved...
                last.next = newChunk;
                newChunk.previous = last;
        }

        if ( false ) {}
        return this;
},

prepend: function prepend ( content ) {
        if ( typeof content !== 'string' ) throw new TypeError( 'outro content must be a string' );

        this.intro = content + this.intro;
        return this;
},

remove: function remove ( start, end ) {
        var this$1 = this;

        while ( start < 0 ) start += this$1.original.length;
        while ( end < 0 ) end += this$1.original.length;

        if ( start === end ) return this;

        if ( start < 0 || end > this.original.length ) throw new Error( 'Character is out of bounds' );
        if ( start > end ) throw new Error( 'end must be greater than start' );

        return this.overwrite( start, end, '', false );
},

slice: function slice ( start, end ) {
        var this$1 = this;
        if ( start === void 0 ) start = 0;
        if ( end === void 0 ) end = this.original.length;

        while ( start < 0 ) start += this$1.original.length;
        while ( end < 0 ) end += this$1.original.length;

        var result = '';

        // find start chunk
        var chunk = this.firstChunk;
        while ( chunk && ( chunk.start > start || chunk.end <= start ) ) {

                // found end chunk before start
                if ( chunk.start < end && chunk.end >= end ) {
                        return result;
                }

                chunk = chunk.next;
        }

        if ( chunk && chunk.edited && chunk.start !== start ) throw new Error(("Cannot use replaced character " + start + " as slice start anchor."));

        var startChunk = chunk;
        while ( chunk ) {
                if ( chunk.intro && ( startChunk !== chunk || chunk.start === start ) ) {
                        result += chunk.intro;
                }

                var containsEnd = chunk.start < end && chunk.end >= end;
                if ( containsEnd && chunk.edited && chunk.end !== end ) throw new Error(("Cannot use replaced character " + end + " as slice end anchor."));

                var sliceStart = startChunk === chunk ? start - chunk.start : 0;
                var sliceEnd = containsEnd ? chunk.content.length + end - chunk.end : chunk.content.length;

                result += chunk.content.slice( sliceStart, sliceEnd );

                if ( chunk.outro && ( !containsEnd || chunk.end === end ) ) {
                        result += chunk.outro;
                }

                if ( containsEnd ) {
                        break;
                }

                chunk = chunk.next;
        }

        return result;
},

// TODO deprecate this? not really very useful
snip: function snip ( start, end ) {
        var clone = this.clone();
        clone.remove( 0, start );
        clone.remove( end, clone.original.length );

        return clone;
},

_split: function _split ( index ) {
        var this$1 = this;

        if ( this.byStart[ index ] || this.byEnd[ index ] ) return;

        if ( false ) {}

        var chunk = this.lastSearchedChunk;
        var searchForward = index > chunk.end;

        while ( true ) {
                if ( chunk.contains( index ) ) return this$1._splitChunk( chunk, index );

                chunk = searchForward ?
                        this$1.byStart[ chunk.end ] :
                        this$1.byEnd[ chunk.start ];
        }
},

_splitChunk: function _splitChunk ( chunk, index ) {
        if ( chunk.edited && chunk.content.length ) { // zero-length edited chunks are a special case (overlapping replacements)
                var loc = getLocator( this.original )( index );
                throw new Error( ("Cannot split a chunk that has already been edited (" + (loc.line) + ":" + (loc.column) + " – \"" + (chunk.original) + "\")") );
        }

        var newChunk = chunk.split( index );

        this.byEnd[ index ] = chunk;
        this.byStart[ index ] = newChunk;
        this.byEnd[ newChunk.end ] = newChunk;

        if ( chunk === this.lastChunk ) this.lastChunk = newChunk;

        this.lastSearchedChunk = chunk;
        if ( false ) {}
        return true;
},

toString: function toString () {
        var str = this.intro;

        var chunk = this.firstChunk;
        while ( chunk ) {
                str += chunk.toString();
                chunk = chunk.next;
        }

        return str + this.outro;
},

trimLines: function trimLines () {
        return this.trim('[\\r\\n]');
},

trim: function trim ( charType ) {
        return this.trimStart( charType ).trimEnd( charType );
},

trimEnd: function trimEnd ( charType ) {
        var this$1 = this;

        var rx = new RegExp( ( charType || '\\s' ) + '+$' );

        this.outro = this.outro.replace( rx, '' );
        if ( this.outro.length ) return this;

        var chunk = this.lastChunk;

        do {
                var end = chunk.end;
                var aborted = chunk.trimEnd( rx );

                // if chunk was trimmed, we have a new lastChunk
                if ( chunk.end !== end ) {
                        this$1.lastChunk = chunk.next;

                        this$1.byEnd[ chunk.end ] = chunk;
                        this$1.byStart[ chunk.next.start ] = chunk.next;
                }

                if ( aborted ) return this$1;
                chunk = chunk.previous;
        } while ( chunk );

        return this;
},

trimStart: function trimStart ( charType ) {
        var this$1 = this;

        var rx = new RegExp( '^' + ( charType || '\\s' ) + '+' );

        this.intro = this.intro.replace( rx, '' );
        if ( this.intro.length ) return this;

        var chunk = this.firstChunk;

        do {
                var end = chunk.end;
                var aborted = chunk.trimStart( rx );

                if ( chunk.end !== end ) {
                        // special case...
                        if ( chunk === this$1.lastChunk ) this$1.lastChunk = chunk.next;

                        this$1.byEnd[ chunk.end ] = chunk;
                        this$1.byStart[ chunk.next.start ] = chunk.next;
                }

                if ( aborted ) return this$1;
                chunk = chunk.next;
        } while ( chunk );

        return this;
}

};

var hasOwnProp = Object.prototype.hasOwnProperty;

function Bundle$1 ( options ) {

if ( options === void 0 ) options = {};

this.intro = options.intro || '';
this.separator = options.separator !== undefined ? options.separator : '\n';

this.sources = [];

this.uniqueSources = [];
this.uniqueSourceIndexByFilename = {};

}

Bundle$1.prototype = {

addSource: function addSource ( source ) {
        if ( source instanceof MagicString ) {
                return this.addSource({
                        content: source,
                        filename: source.filename,
                        separator: this.separator
                });
        }

        if ( !isObject( source ) || !source.content ) {
                throw new Error( 'bundle.addSource() takes an object with a `content` property, which should be an instance of MagicString, and an optional `filename`' );
        }

        [ 'filename', 'indentExclusionRanges', 'separator' ].forEach( function (option) {
                if ( !hasOwnProp.call( source, option ) ) source[ option ] = source.content[ option ];
        });

        if ( source.separator === undefined ) { // TODO there's a bunch of this sort of thing, needs cleaning up
                source.separator = this.separator;
        }

        if ( source.filename ) {
                if ( !hasOwnProp.call( this.uniqueSourceIndexByFilename, source.filename ) ) {
                        this.uniqueSourceIndexByFilename[ source.filename ] = this.uniqueSources.length;
                        this.uniqueSources.push({ filename: source.filename, content: source.content.original });
                } else {
                        var uniqueSource = this.uniqueSources[ this.uniqueSourceIndexByFilename[ source.filename ] ];
                        if ( source.content.original !== uniqueSource.content ) {
                                throw new Error( ("Illegal source: same filename (" + (source.filename) + "), different contents") );
                        }
                }
        }

        this.sources.push( source );
        return this;
},

append: function append ( str, options ) {
        this.addSource({
                content: new MagicString( str ),
                separator: ( options && options.separator ) || ''
        });

        return this;
},

clone: function clone () {
        var bundle = new Bundle$1({
                intro: this.intro,
                separator: this.separator
        });

        this.sources.forEach( function (source) {
                bundle.addSource({
                        filename: source.filename,
                        content: source.content.clone(),
                        separator: source.separator
                });
        });

        return bundle;
},

generateMap: function generateMap ( options ) {
        var this$1 = this;

        var offsets = {};

        var names = [];
        this.sources.forEach( function (source) {
                Object.keys( source.content.storedNames ).forEach( function (name) {
                        if ( !~names.indexOf( name ) ) names.push( name );
                });
        });

        var encoded = (
                getSemis( this.intro ) +
                this.sources.map( function ( source, i ) {
                        var prefix = ( i > 0 ) ? ( getSemis( source.separator ) || ',' ) : '';
                        var mappings;

                        // we don't bother encoding sources without a filename
                        if ( !source.filename ) {
                                mappings = getSemis( source.content.toString() );
                        } else {
                                var sourceIndex = this$1.uniqueSourceIndexByFilename[ source.filename ];
                                mappings = source.content.getMappings( options.hires, sourceIndex, offsets, names );
                        }

                        return prefix + mappings;
                }).join( '' )
        );

        return new SourceMap({
                file: ( options.file ? options.file.split( /[\/\\]/ ).pop() : null ),
                sources: this.uniqueSources.map( function (source) {
                        return options.file ? getRelativePath( options.file, source.filename ) : source.filename;
                }),
                sourcesContent: this.uniqueSources.map( function (source) {
                        return options.includeContent ? source.content : null;
                }),
                names: names,
                mappings: encoded
        });
},

getIndentString: function getIndentString () {
        var indentStringCounts = {};

        this.sources.forEach( function (source) {
                var indentStr = source.content.indentStr;

                if ( indentStr === null ) return;

                if ( !indentStringCounts[ indentStr ] ) indentStringCounts[ indentStr ] = 0;
                indentStringCounts[ indentStr ] += 1;
        });

        return ( Object.keys( indentStringCounts ).sort( function ( a, b ) {
                return indentStringCounts[a] - indentStringCounts[b];
        })[0] ) || '\t';
},

indent: function indent ( indentStr ) {
        var this$1 = this;

        if ( !arguments.length ) {
                indentStr = this.getIndentString();
        }

        if ( indentStr === '' ) return this; // noop

        var trailingNewline = !this.intro || this.intro.slice( -1 ) === '\n';

        this.sources.forEach( function ( source, i ) {
                var separator = source.separator !== undefined ? source.separator : this$1.separator;
                var indentStart = trailingNewline || ( i > 0 && /\r?\n$/.test( separator ) );

                source.content.indent( indentStr, {
                        exclude: source.indentExclusionRanges,
                        indentStart: indentStart//: trailingNewline || /\r?\n$/.test( separator )  //true///\r?\n/.test( separator )
                });

                // TODO this is a very slow way to determine this
                trailingNewline = source.content.toString().slice( 0, -1 ) === '\n';
        });

        if ( this.intro ) {
                this.intro = indentStr + this.intro.replace( /^[^\n]/gm, function ( match, index ) {
                        return index > 0 ? indentStr + match : match;
                });
        }

        return this;
},

prepend: function prepend ( str ) {
        this.intro = str + this.intro;
        return this;
},

toString: function toString () {
        var this$1 = this;

        var body = this.sources.map( function ( source, i ) {
                var separator = source.separator !== undefined ? source.separator : this$1.separator;
                var str = ( i > 0 ? separator : '' ) + source.content.toString();

                return str;
        }).join( '' );

        return this.intro + body;
},

trimLines: function trimLines () {
        return this.trim('[\\r\\n]');
},

trim: function trim ( charType ) {
        return this.trimStart( charType ).trimEnd( charType );
},

trimStart: function trimStart ( charType ) {
        var this$1 = this;

        var rx = new RegExp( '^' + ( charType || '\\s' ) + '+' );
        this.intro = this.intro.replace( rx, '' );

        if ( !this.intro ) {
                var source;
                var i = 0;

                do {
                        source = this$1.sources[i];

                        if ( !source ) {
                                break;
                        }

                        source.content.trimStart( charType );
                        i += 1;
                } while ( source.content.toString() === '' ); // TODO faster way to determine non-empty source?
        }

        return this;
},

trimEnd: function trimEnd ( charType ) {
        var this$1 = this;

        var rx = new RegExp( ( charType || '\\s' ) + '+$' );

        var source;
        var i = this.sources.length - 1;

        do {
                source = this$1.sources[i];

                if ( !source ) {
                        this$1.intro = this$1.intro.replace( rx, '' );
                        break;
                }

                source.content.trimEnd( charType );
                i -= 1;
        } while ( source.content.toString() === '' ); // TODO faster way to determine non-empty source?

        return this;
}

};

function getSemis ( str ) {

return new Array( str.split( '\n' ).length ).join( ';' );

}

// Return the first non-falsy result from an array of // maybe-sync, maybe-promise-returning functions function first ( candidates ) {

return function () {
        var args = [], len = arguments.length;
        while ( len-- ) args[ len ] = arguments[ len ];

        return candidates.reduce( function ( promise, candidate ) {
                return promise.then( function (result) { return result != null ?
                        result :
                        Promise.resolve( candidate.apply( void 0, args ) ); } );
        }, Promise.resolve() );
};

}

function find ( array, fn ) {

for ( var i = 0; i < array.length; i += 1 ) {
        if ( fn( array[i], i ) ) return array[i];
}

return null;

}

// Reserved word lists for various dialects of the language

var reservedWords = {

3: "abstract boolean byte char class double enum export extends final float goto implements import int interface long native package private protected public short static super synchronized throws transient volatile",
5: "class enum extends super const export import",
6: "enum",
7: "enum",
strict: "implements interface let package private protected public static yield",
strictBind: "eval arguments"

}

// And the keywords

var ecma5AndLessKeywords = “break case catch continue debugger default do else finally for function if return switch throw try var while with null true false instanceof typeof void delete new in this”

var keywords = {

5: ecma5AndLessKeywords,
6: ecma5AndLessKeywords + " const class extends export import super"

}

// ## Character categories

// Big ugly regular expressions that match characters in the // whitespace, identifier, and identifier-start categories. These // are only applied when a character is found to actually have a // code point above 128. // Generated by `bin/generate-identifier-regex.js`.

var nonASCIIidentifierStartChars = “xaaxb5xbaxc0-xd6xd8-xf6xf8-u02c1u02c6-u02d1u02e0-u02e4u02ecu02eeu0370-u0374u0376u0377u037a-u037du037fu0386u0388-u038au038cu038e-u03a1u03a3-u03f5u03f7-u0481u048a-u052fu0531-u0556u0559u0561-u0587u05d0-u05eau05f0-u05f2u0620-u064au066eu066fu0671-u06d3u06d5u06e5u06e6u06eeu06efu06fa-u06fcu06ffu0710u0712-u072fu074d-u07a5u07b1u07ca-u07eau07f4u07f5u07fau0800-u0815u081au0824u0828u0840-u0858u08a0-u08b4u08b6-u08bdu0904-u0939u093du0950u0958-u0961u0971-u0980u0985-u098cu098fu0990u0993-u09a8u09aa-u09b0u09b2u09b6-u09b9u09bdu09ceu09dcu09ddu09df-u09e1u09f0u09f1u0a05-u0a0au0a0fu0a10u0a13-u0a28u0a2a-u0a30u0a32u0a33u0a35u0a36u0a38u0a39u0a59-u0a5cu0a5eu0a72-u0a74u0a85-u0a8du0a8f-u0a91u0a93-u0aa8u0aaa-u0ab0u0ab2u0ab3u0ab5-u0ab9u0abdu0ad0u0ae0u0ae1u0af9u0b05-u0b0cu0b0fu0b10u0b13-u0b28u0b2a-u0b30u0b32u0b33u0b35-u0b39u0b3du0b5cu0b5du0b5f-u0b61u0b71u0b83u0b85-u0b8au0b8e-u0b90u0b92-u0b95u0b99u0b9au0b9cu0b9eu0b9fu0ba3u0ba4u0ba8-u0baau0bae-u0bb9u0bd0u0c05-u0c0cu0c0e-u0c10u0c12-u0c28u0c2a-u0c39u0c3du0c58-u0c5au0c60u0c61u0c80u0c85-u0c8cu0c8e-u0c90u0c92-u0ca8u0caa-u0cb3u0cb5-u0cb9u0cbdu0cdeu0ce0u0ce1u0cf1u0cf2u0d05-u0d0cu0d0e-u0d10u0d12-u0d3au0d3du0d4eu0d54-u0d56u0d5f-u0d61u0d7a-u0d7fu0d85-u0d96u0d9a-u0db1u0db3-u0dbbu0dbdu0dc0-u0dc6u0e01-u0e30u0e32u0e33u0e40-u0e46u0e81u0e82u0e84u0e87u0e88u0e8au0e8du0e94-u0e97u0e99-u0e9fu0ea1-u0ea3u0ea5u0ea7u0eaau0eabu0ead-u0eb0u0eb2u0eb3u0ebdu0ec0-u0ec4u0ec6u0edc-u0edfu0f00u0f40-u0f47u0f49-u0f6cu0f88-u0f8cu1000-u102au103fu1050-u1055u105a-u105du1061u1065u1066u106e-u1070u1075-u1081u108eu10a0-u10c5u10c7u10cdu10d0-u10fau10fc-u1248u124a-u124du1250-u1256u1258u125a-u125du1260-u1288u128a-u128du1290-u12b0u12b2-u12b5u12b8-u12beu12c0u12c2-u12c5u12c8-u12d6u12d8-u1310u1312-u1315u1318-u135au1380-u138fu13a0-u13f5u13f8-u13fdu1401-u166cu166f-u167fu1681-u169au16a0-u16eau16ee-u16f8u1700-u170cu170e-u1711u1720-u1731u1740-u1751u1760-u176cu176e-u1770u1780-u17b3u17d7u17dcu1820-u1877u1880-u18a8u18aau18b0-u18f5u1900-u191eu1950-u196du1970-u1974u1980-u19abu19b0-u19c9u1a00-u1a16u1a20-u1a54u1aa7u1b05-u1b33u1b45-u1b4bu1b83-u1ba0u1baeu1bafu1bba-u1be5u1c00-u1c23u1c4d-u1c4fu1c5a-u1c7du1c80-u1c88u1ce9-u1cecu1cee-u1cf1u1cf5u1cf6u1d00-u1dbfu1e00-u1f15u1f18-u1f1du1f20-u1f45u1f48-u1f4du1f50-u1f57u1f59u1f5bu1f5du1f5f-u1f7du1f80-u1fb4u1fb6-u1fbcu1fbeu1fc2-u1fc4u1fc6-u1fccu1fd0-u1fd3u1fd6-u1fdbu1fe0-u1fecu1ff2-u1ff4u1ff6-u1ffcu2071u207fu2090-u209cu2102u2107u210a-u2113u2115u2118-u211du2124u2126u2128u212a-u2139u213c-u213fu2145-u2149u214eu2160-u2188u2c00-u2c2eu2c30-u2c5eu2c60-u2ce4u2ceb-u2ceeu2cf2u2cf3u2d00-u2d25u2d27u2d2du2d30-u2d67u2d6fu2d80-u2d96u2da0-u2da6u2da8-u2daeu2db0-u2db6u2db8-u2dbeu2dc0-u2dc6u2dc8-u2dceu2dd0-u2dd6u2dd8-u2ddeu3005-u3007u3021-u3029u3031-u3035u3038-u303cu3041-u3096u309b-u309fu30a1-u30fau30fc-u30ffu3105-u312du3131-u318eu31a0-u31bau31f0-u31ffu3400-u4db5u4e00-u9fd5ua000-ua48cua4d0-ua4fdua500-ua60cua610-ua61fua62aua62bua640-ua66eua67f-ua69dua6a0-ua6efua717-ua71fua722-ua788ua78b-ua7aeua7b0-ua7b7ua7f7-ua801ua803-ua805ua807-ua80aua80c-ua822ua840-ua873ua882-ua8b3ua8f2-ua8f7ua8fbua8fdua90a-ua925ua930-ua946ua960-ua97cua984-ua9b2ua9cfua9e0-ua9e4ua9e6-ua9efua9fa-ua9feuaa00-uaa28uaa40-uaa42uaa44-uaa4buaa60-uaa76uaa7auaa7e-uaaafuaab1uaab5uaab6uaab9-uaabduaac0uaac2uaadb-uaadduaae0-uaaeauaaf2-uaaf4uab01-uab06uab09-uab0euab11-uab16uab20-uab26uab28-uab2euab30-uab5auab5c-uab65uab70-uabe2uac00-ud7a3ud7b0-ud7c6ud7cb-ud7fbuf900-ufa6dufa70-ufad9ufb00-ufb06ufb13-ufb17ufb1dufb1f-ufb28ufb2a-ufb36ufb38-ufb3cufb3eufb40ufb41ufb43ufb44ufb46-ufbb1ufbd3-ufd3dufd50-ufd8fufd92-ufdc7ufdf0-ufdfbufe70-ufe74ufe76-ufefcuff21-uff3auff41-uff5auff66-uffbeuffc2-uffc7uffca-uffcfuffd2-uffd7uffda-uffdc” var nonASCIIidentifierChars = “u200cu200dxb7u0300-u036fu0387u0483-u0487u0591-u05bdu05bfu05c1u05c2u05c4u05c5u05c7u0610-u061au064b-u0669u0670u06d6-u06dcu06df-u06e4u06e7u06e8u06ea-u06edu06f0-u06f9u0711u0730-u074au07a6-u07b0u07c0-u07c9u07eb-u07f3u0816-u0819u081b-u0823u0825-u0827u0829-u082du0859-u085bu08d4-u08e1u08e3-u0903u093a-u093cu093e-u094fu0951-u0957u0962u0963u0966-u096fu0981-u0983u09bcu09be-u09c4u09c7u09c8u09cb-u09cdu09d7u09e2u09e3u09e6-u09efu0a01-u0a03u0a3cu0a3e-u0a42u0a47u0a48u0a4b-u0a4du0a51u0a66-u0a71u0a75u0a81-u0a83u0abcu0abe-u0ac5u0ac7-u0ac9u0acb-u0acdu0ae2u0ae3u0ae6-u0aefu0b01-u0b03u0b3cu0b3e-u0b44u0b47u0b48u0b4b-u0b4du0b56u0b57u0b62u0b63u0b66-u0b6fu0b82u0bbe-u0bc2u0bc6-u0bc8u0bca-u0bcdu0bd7u0be6-u0befu0c00-u0c03u0c3e-u0c44u0c46-u0c48u0c4a-u0c4du0c55u0c56u0c62u0c63u0c66-u0c6fu0c81-u0c83u0cbcu0cbe-u0cc4u0cc6-u0cc8u0cca-u0ccdu0cd5u0cd6u0ce2u0ce3u0ce6-u0cefu0d01-u0d03u0d3e-u0d44u0d46-u0d48u0d4a-u0d4du0d57u0d62u0d63u0d66-u0d6fu0d82u0d83u0dcau0dcf-u0dd4u0dd6u0dd8-u0ddfu0de6-u0defu0df2u0df3u0e31u0e34-u0e3au0e47-u0e4eu0e50-u0e59u0eb1u0eb4-u0eb9u0ebbu0ebcu0ec8-u0ecdu0ed0-u0ed9u0f18u0f19u0f20-u0f29u0f35u0f37u0f39u0f3eu0f3fu0f71-u0f84u0f86u0f87u0f8d-u0f97u0f99-u0fbcu0fc6u102b-u103eu1040-u1049u1056-u1059u105e-u1060u1062-u1064u1067-u106du1071-u1074u1082-u108du108f-u109du135d-u135fu1369-u1371u1712-u1714u1732-u1734u1752u1753u1772u1773u17b4-u17d3u17ddu17e0-u17e9u180b-u180du1810-u1819u18a9u1920-u192bu1930-u193bu1946-u194fu19d0-u19dau1a17-u1a1bu1a55-u1a5eu1a60-u1a7cu1a7f-u1a89u1a90-u1a99u1ab0-u1abdu1b00-u1b04u1b34-u1b44u1b50-u1b59u1b6b-u1b73u1b80-u1b82u1ba1-u1badu1bb0-u1bb9u1be6-u1bf3u1c24-u1c37u1c40-u1c49u1c50-u1c59u1cd0-u1cd2u1cd4-u1ce8u1cedu1cf2-u1cf4u1cf8u1cf9u1dc0-u1df5u1dfb-u1dffu203fu2040u2054u20d0-u20dcu20e1u20e5-u20f0u2cef-u2cf1u2d7fu2de0-u2dffu302a-u302fu3099u309aua620-ua629ua66fua674-ua67dua69eua69fua6f0ua6f1ua802ua806ua80bua823-ua827ua880ua881ua8b4-ua8c5ua8d0-ua8d9ua8e0-ua8f1ua900-ua909ua926-ua92dua947-ua953ua980-ua983ua9b3-ua9c0ua9d0-ua9d9ua9e5ua9f0-ua9f9uaa29-uaa36uaa43uaa4cuaa4duaa50-uaa59uaa7b-uaa7duaab0uaab2-uaab4uaab7uaab8uaabeuaabfuaac1uaaeb-uaaefuaaf5uaaf6uabe3-uabeauabecuabeduabf0-uabf9ufb1eufe00-ufe0fufe20-ufe2fufe33ufe34ufe4d-ufe4fuff10-uff19uff3f”

var nonASCIIidentifierStart = new RegExp(“[” + nonASCIIidentifierStartChars + “]”) var nonASCIIidentifier = new RegExp(“[” + nonASCIIidentifierStartChars + nonASCIIidentifierChars + “]”)

nonASCIIidentifierStartChars = nonASCIIidentifierChars = null

// These are a run-length and offset encoded representation of the // >0xffff code points that are a valid part of identifiers. The // offset starts at 0x10000, and each pair of numbers represents an // offset to the next range, and then a size of the range. They were // generated by bin/generate-identifier-regex.js var astralIdentifierStartCodes = [0,11,2,25,2,18,2,1,2,14,3,13,35,122,70,52,268,28,4,48,48,31,17,26,6,37,11,29,3,35,5,7,2,4,43,157,19,35,5,35,5,39,9,51,157,310,10,21,11,7,153,5,3,0,2,43,2,1,4,0,3,22,11,22,10,30,66,18,2,1,11,21,11,25,71,55,7,1,65,0,16,3,2,2,2,26,45,28,4,28,36,7,2,27,28,53,11,21,11,18,14,17,111,72,56,50,14,50,785,52,76,44,33,24,27,35,42,34,4,0,13,47,15,3,22,0,2,0,36,17,2,24,85,6,2,0,2,3,2,14,2,9,8,46,39,7,3,1,3,21,2,6,2,1,2,4,4,0,19,0,13,4,159,52,19,3,54,47,21,1,2,0,185,46,42,3,37,47,21,0,60,42,86,25,391,63,32,0,449,56,264,8,2,36,18,0,50,29,881,921,103,110,18,195,2749,1070,4050,582,8634,568,8,30,114,29,19,47,17,3,32,20,6,18,881,68,12,0,67,12,65,0,32,6124,20,754,9486,1,3071,106,6,12,4,8,8,9,5991,84,2,70,2,1,3,0,3,1,3,3,2,11,2,0,2,6,2,64,2,3,3,7,2,6,2,27,2,3,2,4,2,0,4,6,2,339,3,24,2,24,2,30,2,24,2,30,2,24,2,30,2,24,2,30,2,24,2,7,4149,196,60,67,1213,3,2,26,2,1,2,0,3,0,2,9,2,3,2,0,2,0,7,0,5,0,2,0,2,0,2,2,2,1,2,0,3,0,2,0,2,0,2,0,2,0,2,1,2,0,3,3,2,6,2,3,2,3,2,0,2,9,2,16,6,2,2,4,2,16,4421,42710,42,4148,12,221,3,5761,10591,541] var astralIdentifierCodes = [509,0,227,0,150,4,294,9,1368,2,2,1,6,3,41,2,5,0,166,1,1306,2,54,14,32,9,16,3,46,10,54,9,7,2,37,13,2,9,52,0,13,2,49,13,10,2,4,9,83,11,7,0,161,11,6,9,7,3,57,0,2,6,3,1,3,2,10,0,11,1,3,6,4,4,193,17,10,9,87,19,13,9,214,6,3,8,28,1,83,16,16,9,82,12,9,9,84,14,5,9,423,9,838,7,2,7,17,9,57,21,2,13,19882,9,135,4,60,6,26,9,1016,45,17,3,19723,1,5319,4,4,5,9,7,3,6,31,3,149,2,1418,49,513,54,5,49,9,0,15,0,23,4,2,14,1361,6,2,16,3,6,2,1,2,4,2214,6,110,6,6,9,792487,239]

// This has a complexity linear to the value of the code. The // assumption is that looking up astral identifier characters is // rare. function isInAstralSet(code, set) {

var pos = 0x10000
for (var i = 0; i < set.length; i += 2) {
  pos += set[i]
  if (pos > code) return false
  pos += set[i + 1]
  if (pos >= code) return true
}

}

// Test whether a given character code starts an identifier.

function isIdentifierStart(code, astral) {

if (code < 65) return code === 36
if (code < 91) return true
if (code < 97) return code === 95
if (code < 123) return true
if (code <= 0xffff) return code >= 0xaa && nonASCIIidentifierStart.test(String.fromCharCode(code))
if (astral === false) return false
return isInAstralSet(code, astralIdentifierStartCodes)

}

// Test whether a given character is part of an identifier.

function isIdentifierChar(code, astral) {

if (code < 48) return code === 36
if (code < 58) return true
if (code < 65) return false
if (code < 91) return true
if (code < 97) return code === 95
if (code < 123) return true
if (code <= 0xffff) return code >= 0xaa && nonASCIIidentifier.test(String.fromCharCode(code))
if (astral === false) return false
return isInAstralSet(code, astralIdentifierStartCodes) || isInAstralSet(code, astralIdentifierCodes)

}

// ## Token types

// The assignment of fine-grained, information-carrying type objects // allows the tokenizer to store the information it has about a // token in a way that is very cheap for the parser to look up.

// All token type variables start with an underscore, to make them // easy to recognize.

// The `beforeExpr` property is used to disambiguate between regular // expressions and divisions. It is set on all token types that can // be followed by an expression (thus, a slash after them would be a // regular expression). // // The `startsExpr` property is used to check if the token ends a // `yield` expression. It is set on all token types that either can // directly start an expression (like a quotation mark) or can // continue an expression (like the body of a string). // // `isLoop` marks a keyword as starting a loop, which is important // to know when parsing a label, in order to allow or disallow // continue jumps to that label.

var TokenType = function TokenType(label, conf) {

if ( conf === void 0 ) conf = {};

this.label = label
this.keyword = conf.keyword
this.beforeExpr = !!conf.beforeExpr
this.startsExpr = !!conf.startsExpr
this.isLoop = !!conf.isLoop
this.isAssign = !!conf.isAssign
this.prefix = !!conf.prefix
this.postfix = !!conf.postfix
this.binop = conf.binop || null
this.updateContext = null

};

function binop(name, prec) {

return new TokenType(name, {beforeExpr: true, binop: prec})

} var beforeExpr = {beforeExpr: true}; var startsExpr = {startsExpr: true}; // Map keyword names to token types.

var keywordTypes = {}

// Succinct definitions of keyword token types function kw(name, options) {

if ( options === void 0 ) options = {};

options.keyword = name
return keywordTypes[name] = new TokenType(name, options)

}

var tt = {

num: new TokenType("num", startsExpr),
regexp: new TokenType("regexp", startsExpr),
string: new TokenType("string", startsExpr),
name: new TokenType("name", startsExpr),
eof: new TokenType("eof"),

// Punctuation token types.
bracketL: new TokenType("[", {beforeExpr: true, startsExpr: true}),
bracketR: new TokenType("]"),
braceL: new TokenType("{", {beforeExpr: true, startsExpr: true}),
braceR: new TokenType("}"),
parenL: new TokenType("(", {beforeExpr: true, startsExpr: true}),
parenR: new TokenType(")"),
comma: new TokenType(",", beforeExpr),
semi: new TokenType(";", beforeExpr),
colon: new TokenType(":", beforeExpr),
dot: new TokenType("."),
question: new TokenType("?", beforeExpr),
arrow: new TokenType("=>", beforeExpr),
template: new TokenType("template"),
ellipsis: new TokenType("...", beforeExpr),
backQuote: new TokenType("`", startsExpr),
dollarBraceL: new TokenType("${", {beforeExpr: true, startsExpr: true}),

// Operators. These carry several kinds of properties to help the
// parser use them properly (the presence of these properties is
// what categorizes them as operators).
//
// `binop`, when present, specifies that this operator is a binary
// operator, and will refer to its precedence.
//
// `prefix` and `postfix` mark the operator as a prefix or postfix
// unary operator.
//
// `isAssign` marks all of `=`, `+=`, `-=` etcetera, which act as
// binary operators with a very low precedence, that should result
// in AssignmentExpression nodes.

eq: new TokenType("=", {beforeExpr: true, isAssign: true}),
assign: new TokenType("_=", {beforeExpr: true, isAssign: true}),
incDec: new TokenType("++/--", {prefix: true, postfix: true, startsExpr: true}),
prefix: new TokenType("prefix", {beforeExpr: true, prefix: true, startsExpr: true}),
logicalOR: binop("||", 1),
logicalAND: binop("&&", 2),
bitwiseOR: binop("|", 3),
bitwiseXOR: binop("^", 4),
bitwiseAND: binop("&", 5),
equality: binop("==/!=", 6),
relational: binop("</>", 7),
bitShift: binop("<</>>", 8),
plusMin: new TokenType("+/-", {beforeExpr: true, binop: 9, prefix: true, startsExpr: true}),
modulo: binop("%", 10),
star: binop("*", 10),
slash: binop("/", 10),
starstar: new TokenType("**", {beforeExpr: true}),

// Keyword token types.
_break: kw("break"),
_case: kw("case", beforeExpr),
_catch: kw("catch"),
_continue: kw("continue"),
_debugger: kw("debugger"),
_default: kw("default", beforeExpr),
_do: kw("do", {isLoop: true, beforeExpr: true}),
_else: kw("else", beforeExpr),
_finally: kw("finally"),
_for: kw("for", {isLoop: true}),
_function: kw("function", startsExpr),
_if: kw("if"),
_return: kw("return", beforeExpr),
_switch: kw("switch"),
_throw: kw("throw", beforeExpr),
_try: kw("try"),
_var: kw("var"),
_const: kw("const"),
_while: kw("while", {isLoop: true}),
_with: kw("with"),
_new: kw("new", {beforeExpr: true, startsExpr: true}),
_this: kw("this", startsExpr),
_super: kw("super", startsExpr),
_class: kw("class"),
_extends: kw("extends", beforeExpr),
_export: kw("export"),
_import: kw("import"),
_null: kw("null", startsExpr),
_true: kw("true", startsExpr),
_false: kw("false", startsExpr),
_in: kw("in", {beforeExpr: true, binop: 7}),
_instanceof: kw("instanceof", {beforeExpr: true, binop: 7}),
_typeof: kw("typeof", {beforeExpr: true, prefix: true, startsExpr: true}),
_void: kw("void", {beforeExpr: true, prefix: true, startsExpr: true}),
_delete: kw("delete", {beforeExpr: true, prefix: true, startsExpr: true})

}

// Matches a whole line break (where CRLF is considered a single // line break). Used to count lines.

var lineBreak = /rn?|n|u2028|u2029/ var lineBreakG = new RegExp(lineBreak.source, “g”)

function isNewLine(code) {

return code === 10 || code === 13 || code === 0x2028 || code === 0x2029

}

var nonASCIIwhitespace = /[u1680u180eu2000-u200au202fu205fu3000ufeff]/

var skipWhiteSpace = /(?:s|//.*|/**?*/)*/g

function isArray$1(obj) {

return Object.prototype.toString.call(obj) === "[object Array]"

}

// Checks if an object has a property.

function has(obj, propName) {

return Object.prototype.hasOwnProperty.call(obj, propName)

}

// These are used when `options.locations` is on, for the // `startLoc` and `endLoc` properties.

var Position = function Position(line, col) {

this.line = line
this.column = col

};

Position.prototype.offset = function offset (n) {

return new Position(this.line, this.column + n)

};

var SourceLocation = function SourceLocation(p, start, end) {

this.start = start
this.end = end
if (p.sourceFile !== null) this.source = p.sourceFile

};

// The `getLineInfo` function is mostly useful when the // `locations` option is off (for performance reasons) and you // want to find the line/column position for a given character // offset. `input` should be the code string that the offset refers // into.

function getLineInfo(input, offset) {

for (var line = 1, cur = 0;;) {
  lineBreakG.lastIndex = cur
  var match = lineBreakG.exec(input)
  if (match && match.index < offset) {
    ++line
    cur = match.index + match[0].length
  } else {
    return new Position(line, offset - cur)
  }
}

}

// A second optional argument can be given to further configure // the parser process. These options are recognized:

var defaultOptions = {

// `ecmaVersion` indicates the ECMAScript version to parse. Must
// be either 3, 5, 6 (2015), or 7 (2016). This influences support
// for strict mode, the set of reserved words, and support for
// new syntax features. The default is 7.
ecmaVersion: 7,
// `sourceType` indicates the mode the code should be parsed in.
// Can be either `"script"` or `"module"`. This influences global
// strict mode and parsing of `import` and `export` declarations.
sourceType: "script",
// `onInsertedSemicolon` can be a callback that will be called
// when a semicolon is automatically inserted. It will be passed
// th position of the comma as an offset, and if `locations` is
// enabled, it is given the location as a `{line, column}` object
// as second argument.
onInsertedSemicolon: null,
// `onTrailingComma` is similar to `onInsertedSemicolon`, but for
// trailing commas.
onTrailingComma: null,
// By default, reserved words are only enforced if ecmaVersion >= 5.
// Set `allowReserved` to a boolean value to explicitly turn this on
// an off. When this option has the value "never", reserved words
// and keywords can also not be used as property names.
allowReserved: null,
// When enabled, a return at the top level is not considered an
// error.
allowReturnOutsideFunction: false,
// When enabled, import/export statements are not constrained to
// appearing at the top of the program.
allowImportExportEverywhere: false,
// When enabled, hashbang directive in the beginning of file
// is allowed and treated as a line comment.
allowHashBang: false,
// When `locations` is on, `loc` properties holding objects with
// `start` and `end` properties in `{line, column}` form (with
// line being 1-based and column 0-based) will be attached to the
// nodes.
locations: false,
// A function can be passed as `onToken` option, which will
// cause Acorn to call that function with object in the same
// format as tokens returned from `tokenizer().getToken()`. Note
// that you are not allowed to call the parser from the
// callback—that will corrupt its internal state.
onToken: null,
// A function can be passed as `onComment` option, which will
// cause Acorn to call that function with `(block, text, start,
// end)` parameters whenever a comment is skipped. `block` is a
// boolean indicating whether this is a block (`/* */`) comment,
// `text` is the content of the comment, and `start` and `end` are
// character offsets that denote the start and end of the comment.
// When the `locations` option is on, two more parameters are
// passed, the full `{line, column}` locations of the start and
// end of the comments. Note that you are not allowed to call the
// parser from the callback—that will corrupt its internal state.
onComment: null,
// Nodes have their start and end characters offsets recorded in
// `start` and `end` properties (directly on the node, rather than
// the `loc` object, which holds line/column data. To also add a
// [semi-standardized][range] `range` property holding a `[start,
// end]` array with the same numbers, set the `ranges` option to
// `true`.
//
// [range]: https://bugzilla.mozilla.org/show_bug.cgi?id=745678
ranges: false,
// It is possible to parse multiple files into a single AST by
// passing the tree produced by parsing the first file as
// `program` option in subsequent parses. This will add the
// toplevel forms of the parsed file to the `Program` (top) node
// of an existing parse tree.
program: null,
// When `locations` is on, you can pass this to record the source
// file in every node's `loc` object.
sourceFile: null,
// This value, if given, is stored in every node, whether
// `locations` is on or off.
directSourceFile: null,
// When enabled, parenthesized expressions are represented by
// (non-standard) ParenthesizedExpression nodes
preserveParens: false,
plugins: {}

}

// Interpret and default an options object

function getOptions(opts) {

var options = {}

for (var opt in defaultOptions)
  options[opt] = opts && has(opts, opt) ? opts[opt] : defaultOptions[opt]

if (options.ecmaVersion >= 2015)
  options.ecmaVersion -= 2009

if (options.allowReserved == null)
  options.allowReserved = options.ecmaVersion < 5

if (isArray$1(options.onToken)) {
  var tokens = options.onToken
  options.onToken = function (token) { return tokens.push(token); }
}
if (isArray$1(options.onComment))
  options.onComment = pushComment(options, options.onComment)

return options

}

function pushComment(options, array) {

return function (block, text, start, end, startLoc, endLoc) {
  var comment = {
    type: block ? 'Block' : 'Line',
    value: text,
    start: start,
    end: end
  }
  if (options.locations)
    comment.loc = new SourceLocation(this, startLoc, endLoc)
  if (options.ranges)
    comment.range = [start, end]
  array.push(comment)
}

}

// Registered plugins var plugins = {}

function keywordRegexp(words) {

return new RegExp("^(" + words.replace(/ /g, "|") + ")$")

}

var Parser = function Parser(options, input, startPos) {

this.options = options = getOptions(options)
this.sourceFile = options.sourceFile
this.keywords = keywordRegexp(keywords[options.ecmaVersion >= 6 ? 6 : 5])
var reserved = options.allowReserved ? "" :
    reservedWords[options.ecmaVersion] + (options.sourceType == "module" ? " await" : "")
this.reservedWords = keywordRegexp(reserved)
var reservedStrict = (reserved ? reserved + " " : "") + reservedWords.strict
this.reservedWordsStrict = keywordRegexp(reservedStrict)
this.reservedWordsStrictBind = keywordRegexp(reservedStrict + " " + reservedWords.strictBind)
this.input = String(input)

// Used to signal to callers of `readWord1` whether the word
// contained any escape sequences. This is needed because words with
// escape sequences must not be interpreted as keywords.
this.containsEsc = false

// Load plugins
this.loadPlugins(options.plugins)

// Set up token state

// The current position of the tokenizer in the input.
if (startPos) {
  this.pos = startPos
  this.lineStart = this.input.lastIndexOf("\n", startPos - 1) + 1
  this.curLine = this.input.slice(0, this.lineStart).split(lineBreak).length
} else {
  this.pos = this.lineStart = 0
  this.curLine = 1
}

// Properties of the current token:
// Its type
this.type = tt.eof
// For tokens that include more information than their type, the value
this.value = null
// Its start and end offset
this.start = this.end = this.pos
// And, if locations are used, the {line, column} object
// corresponding to those offsets
this.startLoc = this.endLoc = this.curPosition()

// Position information for the previous token
this.lastTokEndLoc = this.lastTokStartLoc = null
this.lastTokStart = this.lastTokEnd = this.pos

// The context stack is used to superficially track syntactic
// context to predict whether a regular expression is allowed in a
// given position.
this.context = this.initialContext()
this.exprAllowed = true

// Figure out if it's a module code.
this.strict = this.inModule = options.sourceType === "module"

// Used to signify the start of a potential arrow function
this.potentialArrowAt = -1

// Flags to track whether we are in a function, a generator, an async function.
this.inFunction = this.inGenerator = this.inAsync = false
// Labels in scope.
this.labels = []

// If enabled, skip leading hashbang line.
if (this.pos === 0 && options.allowHashBang && this.input.slice(0, 2) === '#!')
  this.skipLineComment(2)

};

// DEPRECATED Kept for backwards compatibility until 3.0 in case a plugin uses them Parser.prototype.isKeyword = function isKeyword (word) { return this.keywords.test(word) }; Parser.prototype.isReservedWord = function isReservedWord (word) { return this.reservedWords.test(word) };

Parser.prototype.extend = function extend (name, f) {

this[name] = f(this[name])

};

Parser.prototype.loadPlugins = function loadPlugins (pluginConfigs) {

  var this$1 = this;

for (var name in pluginConfigs) {
  var plugin = plugins[name]
  if (!plugin) throw new Error("Plugin '" + name + "' not found")
  plugin(this$1, pluginConfigs[name])
}

};

Parser.prototype.parse = function parse () {

var node = this.options.program || this.startNode()
this.nextToken()
return this.parseTopLevel(node)

};

var pp = Parser.prototype

// ## Parser utilities

// Test whether a statement node is the string literal `“use strict”`.

pp.isUseStrict = function(stmt) {

return this.options.ecmaVersion >= 5 && stmt.type === "ExpressionStatement" &&
  stmt.expression.type === "Literal" &&
  stmt.expression.raw.slice(1, -1) === "use strict"

}

// Predicate that tests whether the next token is of the given // type, and if yes, consumes it as a side effect.

pp.eat = function(type) {

if (this.type === type) {
  this.next()
  return true
} else {
  return false
}

}

// Tests whether parsed token is a contextual keyword.

pp.isContextual = function(name) {

return this.type === tt.name && this.value === name

}

// Consumes contextual keyword if possible.

pp.eatContextual = function(name) {

return this.value === name && this.eat(tt.name)

}

// Asserts that following token is given contextual keyword.

pp.expectContextual = function(name) {

if (!this.eatContextual(name)) this.unexpected()

}

// Test whether a semicolon can be inserted at the current position.

pp.canInsertSemicolon = function() {

return this.type === tt.eof ||
  this.type === tt.braceR ||
  lineBreak.test(this.input.slice(this.lastTokEnd, this.start))

}

pp.insertSemicolon = function() {

if (this.canInsertSemicolon()) {
  if (this.options.onInsertedSemicolon)
    this.options.onInsertedSemicolon(this.lastTokEnd, this.lastTokEndLoc)
  return true
}

}

// Consume a semicolon, or, failing that, see if we are allowed to // pretend that there is a semicolon at this position.

pp.semicolon = function() {

if (!this.eat(tt.semi) && !this.insertSemicolon()) this.unexpected()

}

pp.afterTrailingComma = function(tokType, notNext) {

if (this.type == tokType) {
  if (this.options.onTrailingComma)
    this.options.onTrailingComma(this.lastTokStart, this.lastTokStartLoc)
  if (!notNext)
    this.next()
  return true
}

}

// Expect a token of a given type. If found, consume it, otherwise, // raise an unexpected token error.

pp.expect = function(type) {

this.eat(type) || this.unexpected()

}

// Raise an unexpected token error.

pp.unexpected = function(pos) {

this.raise(pos != null ? pos : this.start, "Unexpected token")

}

var DestructuringErrors = function DestructuringErrors() {

this.shorthandAssign = 0
this.trailingComma = 0
this.yield = 0
this.await = 0

};

pp.checkPatternErrors = function(refDestructuringErrors, andThrow) {

var trailing = refDestructuringErrors && refDestructuringErrors.trailingComma
if (!andThrow) return !!trailing
if (trailing) this.raise(trailing, "Comma is not permitted after the rest element")

}

pp.checkExpressionErrors = function(refDestructuringErrors, andThrow) {

var pos = refDestructuringErrors && refDestructuringErrors.shorthandAssign
if (!andThrow) return !!pos
if (pos) this.raise(pos, "Shorthand property assignments are valid only in destructuring patterns")

}

pp.checkDefaultValueErrors = function(refDestructuringErrors, isArrow, andThrow) {

var yieldPos = (isArrow || this.inGenerator) && refDestructuringErrors && refDestructuringErrors.yield
var awaitPos = (isArrow || this.inAsync) && refDestructuringErrors && refDestructuringErrors.await
if (!andThrow) return !!(yieldPos || awaitPos)
if (yieldPos && (!awaitPos || yieldPos < awaitPos)) this.raise(yieldPos, "Yield expression cannot be a default value")
if (awaitPos) this.raise(awaitPos, "Await expression cannot be a default value")

}

var pp$1 = Parser.prototype

// ### Statement parsing

// Parse a program. Initializes the parser, reads any number of // statements, and wraps them in a Program node. Optionally takes a // `program` argument. If present, the statements will be appended // to its body instead of creating a new node.

pp$1.parseTopLevel = function(node) {

var this$1 = this;

var first = true, exports = {}
if (!node.body) node.body = []
while (this.type !== tt.eof) {
  var stmt = this$1.parseStatement(true, true, exports)
  node.body.push(stmt)
  if (first) {
    if (this$1.isUseStrict(stmt)) this$1.setStrict(true)
    first = false
  }
}
this.next()
if (this.options.ecmaVersion >= 6) {
  node.sourceType = this.options.sourceType
}
return this.finishNode(node, "Program")

}

var loopLabel = {kind: “loop”}; var switchLabel = {kind: “switch”}; pp$1.isLet = function() {

if (this.type !== tt.name || this.options.ecmaVersion < 6 || this.value != "let") return false
skipWhiteSpace.lastIndex = this.pos
var skip = skipWhiteSpace.exec(this.input)
var next = this.pos + skip[0].length, nextCh = this.input.charCodeAt(next)
if (nextCh === 91 || nextCh == 123) return true // '{' and '['
if (isIdentifierStart(nextCh, true)) {
  for (var pos = next + 1; isIdentifierChar(this.input.charCodeAt(pos), true); ++pos) {}
  var ident = this.input.slice(next, pos)
  if (!this.isKeyword(ident)) return true
}
return false

}

// check 'async [no LineTerminator here] function' // - 'async /foo/ function' is OK. // - 'async /n/ function' is invalid. pp$1.isAsyncFunction = function() {

if (this.type !== tt.name || this.options.ecmaVersion < 8 || this.value != "async")
  return false

skipWhiteSpace.lastIndex = this.pos
var skip = skipWhiteSpace.exec(this.input)
var next = this.pos + skip[0].length
return !lineBreak.test(this.input.slice(this.pos, next)) &&
  this.input.slice(next, next + 8) === "function" &&
  (next + 8 == this.input.length || !isIdentifierChar(this.input.charAt(next + 8)))

}

// Parse a single statement. // // If expecting a statement and finding a slash operator, parse a // regular expression literal. This is to handle cases like // `if (foo) /blah/.exec(foo)`, where looking at the previous token // does not help.

pp$1.parseStatement = function(declaration, topLevel, exports) {

var starttype = this.type, node = this.startNode(), kind

if (this.isLet()) {
  starttype = tt._var
  kind = "let"
}

// Most types of statements are recognized by the keyword they
// start with. Many are trivial to parse, some require a bit of
// complexity.

switch (starttype) {
case tt._break: case tt._continue: return this.parseBreakContinueStatement(node, starttype.keyword)
case tt._debugger: return this.parseDebuggerStatement(node)
case tt._do: return this.parseDoStatement(node)
case tt._for: return this.parseForStatement(node)
case tt._function:
  if (!declaration && this.options.ecmaVersion >= 6) break
  return this.parseFunctionStatement(node, false)
case tt._class:
  if (!declaration) this.unexpected()
  return this.parseClass(node, true)
case tt._if: return this.parseIfStatement(node)
case tt._return: return this.parseReturnStatement(node)
case tt._switch: return this.parseSwitchStatement(node)
case tt._throw: return this.parseThrowStatement(node)
case tt._try: return this.parseTryStatement(node)
case tt._const: case tt._var:
  kind = kind || this.value
  if (!declaration && kind != "var") this.unexpected()
  return this.parseVarStatement(node, kind)
case tt._while: return this.parseWhileStatement(node)
case tt._with: return this.parseWithStatement(node)
case tt.braceL: return this.parseBlock()
case tt.semi: return this.parseEmptyStatement(node)
case tt._export:
case tt._import:
  if (!this.options.allowImportExportEverywhere) {
    if (!topLevel)
      this.raise(this.start, "'import' and 'export' may only appear at the top level")
    if (!this.inModule)
      this.raise(this.start, "'import' and 'export' may appear only with 'sourceType: module'")
  }
  return starttype === tt._import ? this.parseImport(node) : this.parseExport(node, exports)
}

if (this.isAsyncFunction() && declaration) {
  this.next()
  return this.parseFunctionStatement(node, true)
}

// If the statement does not start with a statement keyword or a
// brace, it's an ExpressionStatement or LabeledStatement. We
// simply start parsing an expression, and afterwards, if the
// next token is a colon and the expression was a simple
// Identifier node, we switch to interpreting it as a label.
var maybeName = this.value, expr = this.parseExpression()
if (starttype === tt.name && expr.type === "Identifier" && this.eat(tt.colon))
  return this.parseLabeledStatement(node, maybeName, expr)
else return this.parseExpressionStatement(node, expr)

}

pp$1.parseBreakContinueStatement = function(node, keyword) {

var this$1 = this;

var isBreak = keyword == "break"
this.next()
if (this.eat(tt.semi) || this.insertSemicolon()) node.label = null
else if (this.type !== tt.name) this.unexpected()
else {
  node.label = this.parseIdent()
  this.semicolon()
}

// Verify that there is an actual destination to break or
// continue to.
for (var i = 0; i < this.labels.length; ++i) {
  var lab = this$1.labels[i]
  if (node.label == null || lab.name === node.label.name) {
    if (lab.kind != null && (isBreak || lab.kind === "loop")) break
    if (node.label && isBreak) break
  }
}
if (i === this.labels.length) this.raise(node.start, "Unsyntactic " + keyword)
return this.finishNode(node, isBreak ? "BreakStatement" : "ContinueStatement")

}

pp$1.parseDebuggerStatement = function(node) {

this.next()
this.semicolon()
return this.finishNode(node, "DebuggerStatement")

}

pp$1.parseDoStatement = function(node) {

this.next()
this.labels.push(loopLabel)
node.body = this.parseStatement(false)
this.labels.pop()
this.expect(tt._while)
node.test = this.parseParenExpression()
if (this.options.ecmaVersion >= 6)
  this.eat(tt.semi)
else
  this.semicolon()
return this.finishNode(node, "DoWhileStatement")

}

// Disambiguating between a `for` and a `for`/`in` or `for`/`of` // loop is non-trivial. Basically, we have to parse the init `var` // statement or expression, disallowing the `in` operator (see // the second parameter to `parseExpression`), and then check // whether the next token is `in` or `of`. When there is no init // part (semicolon immediately after the opening parenthesis), it // is a regular `for` loop.

pp$1.parseForStatement = function(node) {

this.next()
this.labels.push(loopLabel)
this.expect(tt.parenL)
if (this.type === tt.semi) return this.parseFor(node, null)
var isLet = this.isLet()
if (this.type === tt._var || this.type === tt._const || isLet) {
  var init$1 = this.startNode(), kind = isLet ? "let" : this.value
  this.next()
  this.parseVar(init$1, true, kind)
  this.finishNode(init$1, "VariableDeclaration")
  if ((this.type === tt._in || (this.options.ecmaVersion >= 6 && this.isContextual("of"))) && init$1.declarations.length === 1 &&
      !(kind !== "var" && init$1.declarations[0].init))
    return this.parseForIn(node, init$1)
  return this.parseFor(node, init$1)
}
var refDestructuringErrors = new DestructuringErrors
var init = this.parseExpression(true, refDestructuringErrors)
if (this.type === tt._in || (this.options.ecmaVersion >= 6 && this.isContextual("of"))) {
  this.checkPatternErrors(refDestructuringErrors, true)
  this.toAssignable(init)
  this.checkLVal(init)
  return this.parseForIn(node, init)
} else {
  this.checkExpressionErrors(refDestructuringErrors, true)
}
return this.parseFor(node, init)

}

pp$1.parseFunctionStatement = function(node, isAsync) {

this.next()
return this.parseFunction(node, true, false, isAsync)

}

pp$1.parseIfStatement = function(node) {

this.next()
node.test = this.parseParenExpression()
node.consequent = this.parseStatement(false)
node.alternate = this.eat(tt._else) ? this.parseStatement(false) : null
return this.finishNode(node, "IfStatement")

}

pp$1.parseReturnStatement = function(node) {

if (!this.inFunction && !this.options.allowReturnOutsideFunction)
  this.raise(this.start, "'return' outside of function")
this.next()

// In `return` (and `break`/`continue`), the keywords with
// optional arguments, we eagerly look for a semicolon or the
// possibility to insert one.

if (this.eat(tt.semi) || this.insertSemicolon()) node.argument = null
else { node.argument = this.parseExpression(); this.semicolon() }
return this.finishNode(node, "ReturnStatement")

}

pp$1.parseSwitchStatement = function(node) {

var this$1 = this;

this.next()
node.discriminant = this.parseParenExpression()
node.cases = []
this.expect(tt.braceL)
this.labels.push(switchLabel)

// Statements under must be grouped (by label) in SwitchCase
// nodes. `cur` is used to keep the node that we are currently
// adding statements to.

for (var cur, sawDefault = false; this.type != tt.braceR;) {
  if (this$1.type === tt._case || this$1.type === tt._default) {
    var isCase = this$1.type === tt._case
    if (cur) this$1.finishNode(cur, "SwitchCase")
    node.cases.push(cur = this$1.startNode())
    cur.consequent = []
    this$1.next()
    if (isCase) {
      cur.test = this$1.parseExpression()
    } else {
      if (sawDefault) this$1.raiseRecoverable(this$1.lastTokStart, "Multiple default clauses")
      sawDefault = true
      cur.test = null
    }
    this$1.expect(tt.colon)
  } else {
    if (!cur) this$1.unexpected()
    cur.consequent.push(this$1.parseStatement(true))
  }
}
if (cur) this.finishNode(cur, "SwitchCase")
this.next() // Closing brace
this.labels.pop()
return this.finishNode(node, "SwitchStatement")

}

pp$1.parseThrowStatement = function(node) {

this.next()
if (lineBreak.test(this.input.slice(this.lastTokEnd, this.start)))
  this.raise(this.lastTokEnd, "Illegal newline after throw")
node.argument = this.parseExpression()
this.semicolon()
return this.finishNode(node, "ThrowStatement")

}

// Reused empty array added for node fields that are always empty.

var empty = []

pp$1.parseTryStatement = function(node) {

this.next()
node.block = this.parseBlock()
node.handler = null
if (this.type === tt._catch) {
  var clause = this.startNode()
  this.next()
  this.expect(tt.parenL)
  clause.param = this.parseBindingAtom()
  this.checkLVal(clause.param, true)
  this.expect(tt.parenR)
  clause.body = this.parseBlock()
  node.handler = this.finishNode(clause, "CatchClause")
}
node.finalizer = this.eat(tt._finally) ? this.parseBlock() : null
if (!node.handler && !node.finalizer)
  this.raise(node.start, "Missing catch or finally clause")
return this.finishNode(node, "TryStatement")

}

pp$1.parseVarStatement = function(node, kind) {

this.next()
this.parseVar(node, false, kind)
this.semicolon()
return this.finishNode(node, "VariableDeclaration")

}

pp$1.parseWhileStatement = function(node) {

this.next()
node.test = this.parseParenExpression()
this.labels.push(loopLabel)
node.body = this.parseStatement(false)
this.labels.pop()
return this.finishNode(node, "WhileStatement")

}

pp$1.parseWithStatement = function(node) {

if (this.strict) this.raise(this.start, "'with' in strict mode")
this.next()
node.object = this.parseParenExpression()
node.body = this.parseStatement(false)
return this.finishNode(node, "WithStatement")

}

pp$1.parseEmptyStatement = function(node) {

this.next()
return this.finishNode(node, "EmptyStatement")

}

pp$1.parseLabeledStatement = function(node, maybeName, expr) {

var this$1 = this;

for (var i = 0; i < this.labels.length; ++i)
  if (this$1.labels[i].name === maybeName) this$1.raise(expr.start, "Label '" + maybeName + "' is already declared")
var kind = this.type.isLoop ? "loop" : this.type === tt._switch ? "switch" : null
for (var i$1 = this.labels.length - 1; i$1 >= 0; i$1--) {
  var label = this$1.labels[i$1]
  if (label.statementStart == node.start) {
    label.statementStart = this$1.start
    label.kind = kind
  } else break
}
this.labels.push({name: maybeName, kind: kind, statementStart: this.start})
node.body = this.parseStatement(true)
this.labels.pop()
node.label = expr
return this.finishNode(node, "LabeledStatement")

}

pp$1.parseExpressionStatement = function(node, expr) {

node.expression = expr
this.semicolon()
return this.finishNode(node, "ExpressionStatement")

}

// Parse a semicolon-enclosed block of statements, handling `“use // strict”` declarations when `allowStrict` is true (used for // function bodies).

pp$1.parseBlock = function(allowStrict) {

var this$1 = this;

var node = this.startNode(), first = true, oldStrict
node.body = []
this.expect(tt.braceL)
while (!this.eat(tt.braceR)) {
  var stmt = this$1.parseStatement(true)
  node.body.push(stmt)
  if (first && allowStrict && this$1.isUseStrict(stmt)) {
    oldStrict = this$1.strict
    this$1.setStrict(this$1.strict = true)
  }
  first = false
}
if (oldStrict === false) this.setStrict(false)
return this.finishNode(node, "BlockStatement")

}

// Parse a regular `for` loop. The disambiguation code in // `parseStatement` will already have parsed the init statement or // expression.

pp$1.parseFor = function(node, init) {

node.init = init
this.expect(tt.semi)
node.test = this.type === tt.semi ? null : this.parseExpression()
this.expect(tt.semi)
node.update = this.type === tt.parenR ? null : this.parseExpression()
this.expect(tt.parenR)
node.body = this.parseStatement(false)
this.labels.pop()
return this.finishNode(node, "ForStatement")

}

// Parse a `for`/`in` and `for`/`of` loop, which are almost // same from parser's perspective.

pp$1.parseForIn = function(node, init) {

var type = this.type === tt._in ? "ForInStatement" : "ForOfStatement"
this.next()
node.left = init
node.right = this.parseExpression()
this.expect(tt.parenR)
node.body = this.parseStatement(false)
this.labels.pop()
return this.finishNode(node, type)

}

// Parse a list of variable declarations.

pp$1.parseVar = function(node, isFor, kind) {

var this$1 = this;

node.declarations = []
node.kind = kind
for (;;) {
  var decl = this$1.startNode()
  this$1.parseVarId(decl)
  if (this$1.eat(tt.eq)) {
    decl.init = this$1.parseMaybeAssign(isFor)
  } else if (kind === "const" && !(this$1.type === tt._in || (this$1.options.ecmaVersion >= 6 && this$1.isContextual("of")))) {
    this$1.unexpected()
  } else if (decl.id.type != "Identifier" && !(isFor && (this$1.type === tt._in || this$1.isContextual("of")))) {
    this$1.raise(this$1.lastTokEnd, "Complex binding patterns require an initialization value")
  } else {
    decl.init = null
  }
  node.declarations.push(this$1.finishNode(decl, "VariableDeclarator"))
  if (!this$1.eat(tt.comma)) break
}
return node

}

pp$1.parseVarId = function(decl) {

decl.id = this.parseBindingAtom()
this.checkLVal(decl.id, true)

}

// Parse a function declaration or literal (depending on the // `isStatement` parameter).

pp$1.parseFunction = function(node, isStatement, allowExpressionBody, isAsync) {

this.initFunction(node)
if (this.options.ecmaVersion >= 6 && !isAsync)
  node.generator = this.eat(tt.star)
if (this.options.ecmaVersion >= 8)
  node.async = !!isAsync
if (isStatement)
  node.id = this.parseIdent()
var oldInGen = this.inGenerator, oldInAsync = this.inAsync
this.inGenerator = node.generator
this.inAsync = node.async
if (!isStatement && this.type === tt.name)
  node.id = this.parseIdent()
this.parseFunctionParams(node)
this.parseFunctionBody(node, allowExpressionBody)
this.inGenerator = oldInGen
this.inAsync = oldInAsync
return this.finishNode(node, isStatement ? "FunctionDeclaration" : "FunctionExpression")

}

pp$1.parseFunctionParams = function(node) {

this.expect(tt.parenL)

var refDestructuringErrors = new DestructuringErrors
node.params = this.parseBindingList(tt.parenR, false, this.options.ecmaVersion >= 8, true, refDestructuringErrors)
this.checkDefaultValueErrors(refDestructuringErrors, false, true)

}

// Parse a class declaration or literal (depending on the // `isStatement` parameter).

pp$1.parseClass = function(node, isStatement, refDestructuringErrors) {

var this$1 = this;

this.next()
this.parseClassId(node, isStatement)
this.parseClassSuper(node, refDestructuringErrors)
var classBody = this.startNode()
var hadConstructor = false
classBody.body = []
this.expect(tt.braceL)
while (!this.eat(tt.braceR)) {
  if (this$1.eat(tt.semi)) continue
  var method = this$1.startNode()
  var isGenerator = this$1.eat(tt.star)
  var isAsync = false
  var isMaybeStatic = this$1.type === tt.name && this$1.value === "static"
  this$1.parsePropertyName(method, refDestructuringErrors)
  method.static = isMaybeStatic && this$1.type !== tt.parenL
  if (method.static) {
    if (isGenerator) this$1.unexpected()
    isGenerator = this$1.eat(tt.star)
    this$1.parsePropertyName(method, refDestructuringErrors)
  }
  if (this$1.options.ecmaVersion >= 8 && !isGenerator && !method.computed &&
      method.key.type === "Identifier" && method.key.name === "async" && this$1.type !== tt.parenL &&
      !this$1.canInsertSemicolon()) {
    isAsync = true
    this$1.parsePropertyName(method, refDestructuringErrors)
  }
  method.kind = "method"
  var isGetSet = false
  if (!method.computed) {
    var key = method.key;
    if (!isGenerator && !isAsync && key.type === "Identifier" && this$1.type !== tt.parenL && (key.name === "get" || key.name === "set")) {
      isGetSet = true
      method.kind = key.name
      key = this$1.parsePropertyName(method, refDestructuringErrors)
    }
    if (!method.static && (key.type === "Identifier" && key.name === "constructor" ||
        key.type === "Literal" && key.value === "constructor")) {
      if (hadConstructor) this$1.raise(key.start, "Duplicate constructor in the same class")
      if (isGetSet) this$1.raise(key.start, "Constructor can't have get/set modifier")
      if (isGenerator) this$1.raise(key.start, "Constructor can't be a generator")
      if (isAsync) this$1.raise(key.start, "Constructor can't be an async method")
      method.kind = "constructor"
      hadConstructor = true
    }
  }
  this$1.parseClassMethod(classBody, method, isGenerator, isAsync)
  if (isGetSet) {
    var paramCount = method.kind === "get" ? 0 : 1
    if (method.value.params.length !== paramCount) {
      var start = method.value.start
      if (method.kind === "get")
        this$1.raiseRecoverable(start, "getter should have no params")
      else
        this$1.raiseRecoverable(start, "setter should have exactly one param")
    } else {
      if (method.kind === "set" && method.value.params[0].type === "RestElement")
        this$1.raiseRecoverable(method.value.params[0].start, "Setter cannot use rest params")
    }
  }
}
node.body = this.finishNode(classBody, "ClassBody")
return this.finishNode(node, isStatement ? "ClassDeclaration" : "ClassExpression")

}

pp$1.parseClassMethod = function(classBody, method, isGenerator, isAsync) {

method.value = this.parseMethod(isGenerator, isAsync)
classBody.body.push(this.finishNode(method, "MethodDefinition"))

}

pp$1.parseClassId = function(node, isStatement) {

node.id = this.type === tt.name ? this.parseIdent() : isStatement ? this.unexpected() : null

}

pp$1.parseClassSuper = function(node, refDestructuringErrors) {

node.superClass = this.eat(tt._extends) ? this.parseExprSubscripts(refDestructuringErrors) : null

}

// Parses module export declaration.

pp$1.parseExport = function(node, exports) {

var this$1 = this;

this.next()
// export * from '...'
if (this.eat(tt.star)) {
  this.expectContextual("from")
  node.source = this.type === tt.string ? this.parseExprAtom() : this.unexpected()
  this.semicolon()
  return this.finishNode(node, "ExportAllDeclaration")
}
if (this.eat(tt._default)) { // export default ...
  this.checkExport(exports, "default", this.lastTokStart)
  var parens = this.type == tt.parenL
  var expr = this.parseMaybeAssign()
  var needsSemi = true
  if (!parens && (expr.type == "FunctionExpression" ||
                  expr.type == "ClassExpression")) {
    needsSemi = false
    if (expr.id) {
      expr.type = expr.type == "FunctionExpression"
        ? "FunctionDeclaration"
        : "ClassDeclaration"
    }
  }
  node.declaration = expr
  if (needsSemi) this.semicolon()
  return this.finishNode(node, "ExportDefaultDeclaration")
}
// export var|const|let|function|class ...
if (this.shouldParseExportStatement()) {
  node.declaration = this.parseStatement(true)
  if (node.declaration.type === "VariableDeclaration")
    this.checkVariableExport(exports, node.declaration.declarations)
  else
    this.checkExport(exports, node.declaration.id.name, node.declaration.id.start)
  node.specifiers = []
  node.source = null
} else { // export { x, y as z } [from '...']
  node.declaration = null
  node.specifiers = this.parseExportSpecifiers(exports)
  if (this.eatContextual("from")) {
    node.source = this.type === tt.string ? this.parseExprAtom() : this.unexpected()
  } else {
    // check for keywords used as local names
    for (var i = 0; i < node.specifiers.length; i++) {
      if (this$1.keywords.test(node.specifiers[i].local.name) || this$1.reservedWords.test(node.specifiers[i].local.name)) {
        this$1.unexpected(node.specifiers[i].local.start)
      }
    }

    node.source = null
  }
  this.semicolon()
}
return this.finishNode(node, "ExportNamedDeclaration")

}

pp$1.checkExport = function(exports, name, pos) {

if (!exports) return
if (Object.prototype.hasOwnProperty.call(exports, name))
  this.raiseRecoverable(pos, "Duplicate export '" + name + "'")
exports[name] = true

}

pp$1.checkPatternExport = function(exports, pat) {

var this$1 = this;

var type = pat.type
if (type == "Identifier")
  this.checkExport(exports, pat.name, pat.start)
else if (type == "ObjectPattern")
  for (var i = 0; i < pat.properties.length; ++i)
    this$1.checkPatternExport(exports, pat.properties[i].value)
else if (type == "ArrayPattern")
  for (var i$1 = 0; i$1 < pat.elements.length; ++i$1) {
    var elt = pat.elements[i$1]
    if (elt) this$1.checkPatternExport(exports, elt)
  }
else if (type == "AssignmentPattern")
  this.checkPatternExport(exports, pat.left)
else if (type == "ParenthesizedExpression")
  this.checkPatternExport(exports, pat.expression)

}

pp$1.checkVariableExport = function(exports, decls) {

var this$1 = this;

if (!exports) return
for (var i = 0; i < decls.length; i++)
  this$1.checkPatternExport(exports, decls[i].id)

}

pp$1.shouldParseExportStatement = function() {

return this.type.keyword || this.isLet() || this.isAsyncFunction()

}

// Parses a comma-separated list of module exports.

pp$1.parseExportSpecifiers = function(exports) {

var this$1 = this;

var nodes = [], first = true
// export { x, y as z } [from '...']
this.expect(tt.braceL)
while (!this.eat(tt.braceR)) {
  if (!first) {
    this$1.expect(tt.comma)
    if (this$1.afterTrailingComma(tt.braceR)) break
  } else first = false

  var node = this$1.startNode()
  node.local = this$1.parseIdent(this$1.type === tt._default)
  node.exported = this$1.eatContextual("as") ? this$1.parseIdent(true) : node.local
  this$1.checkExport(exports, node.exported.name, node.exported.start)
  nodes.push(this$1.finishNode(node, "ExportSpecifier"))
}
return nodes

}

// Parses import declaration.

pp$1.parseImport = function(node) {

this.next()
// import '...'
if (this.type === tt.string) {
  node.specifiers = empty
  node.source = this.parseExprAtom()
} else {
  node.specifiers = this.parseImportSpecifiers()
  this.expectContextual("from")
  node.source = this.type === tt.string ? this.parseExprAtom() : this.unexpected()
}
this.semicolon()
return this.finishNode(node, "ImportDeclaration")

}

// Parses a comma-separated list of module imports.

pp$1.parseImportSpecifiers = function() {

var this$1 = this;

var nodes = [], first = true
if (this.type === tt.name) {
  // import defaultObj, { x, y as z } from '...'
  var node = this.startNode()
  node.local = this.parseIdent()
  this.checkLVal(node.local, true)
  nodes.push(this.finishNode(node, "ImportDefaultSpecifier"))
  if (!this.eat(tt.comma)) return nodes
}
if (this.type === tt.star) {
  var node$1 = this.startNode()
  this.next()
  this.expectContextual("as")
  node$1.local = this.parseIdent()
  this.checkLVal(node$1.local, true)
  nodes.push(this.finishNode(node$1, "ImportNamespaceSpecifier"))
  return nodes
}
this.expect(tt.braceL)
while (!this.eat(tt.braceR)) {
  if (!first) {
    this$1.expect(tt.comma)
    if (this$1.afterTrailingComma(tt.braceR)) break
  } else first = false

  var node$2 = this$1.startNode()
  node$2.imported = this$1.parseIdent(true)
  if (this$1.eatContextual("as")) {
    node$2.local = this$1.parseIdent()
  } else {
    node$2.local = node$2.imported
    if (this$1.isKeyword(node$2.local.name)) this$1.unexpected(node$2.local.start)
    if (this$1.reservedWordsStrict.test(node$2.local.name)) this$1.raise(node$2.local.start, "The keyword '" + node$2.local.name + "' is reserved")
  }
  this$1.checkLVal(node$2.local, true)
  nodes.push(this$1.finishNode(node$2, "ImportSpecifier"))
}
return nodes

}

var pp$2 = Parser.prototype

// Convert existing expression atom to assignable pattern // if possible.

pp$2.toAssignable = function(node, isBinding) {

var this$1 = this;

if (this.options.ecmaVersion >= 6 && node) {
  switch (node.type) {
  case "Identifier":
    if (this.inAsync && node.name === "await")
      this.raise(node.start, "Can not use 'await' as identifier inside an async function")
    break

  case "ObjectPattern":
  case "ArrayPattern":
    break

  case "ObjectExpression":
    node.type = "ObjectPattern"
    for (var i = 0; i < node.properties.length; i++) {
      var prop = node.properties[i]
      if (prop.kind !== "init") this$1.raise(prop.key.start, "Object pattern can't contain getter or setter")
      this$1.toAssignable(prop.value, isBinding)
    }
    break

  case "ArrayExpression":
    node.type = "ArrayPattern"
    this.toAssignableList(node.elements, isBinding)
    break

  case "AssignmentExpression":
    if (node.operator === "=") {
      node.type = "AssignmentPattern"
      delete node.operator
      this.toAssignable(node.left, isBinding)
      // falls through to AssignmentPattern
    } else {
      this.raise(node.left.end, "Only '=' operator can be used for specifying default value.")
      break
    }

  case "AssignmentPattern":
    break

  case "ParenthesizedExpression":
    node.expression = this.toAssignable(node.expression, isBinding)
    break

  case "MemberExpression":
    if (!isBinding) break

  default:
    this.raise(node.start, "Assigning to rvalue")
  }
}
return node

}

// Convert list of expression atoms to binding list.

pp$2.toAssignableList = function(exprList, isBinding) {

var this$1 = this;

var end = exprList.length
if (end) {
  var last = exprList[end - 1]
  if (last && last.type == "RestElement") {
    --end
  } else if (last && last.type == "SpreadElement") {
    last.type = "RestElement"
    var arg = last.argument
    this.toAssignable(arg, isBinding)
    if (arg.type !== "Identifier" && arg.type !== "MemberExpression" && arg.type !== "ArrayPattern")
      this.unexpected(arg.start)
    --end
  }

  if (isBinding && last && last.type === "RestElement" && last.argument.type !== "Identifier")
    this.unexpected(last.argument.start)
}
for (var i = 0; i < end; i++) {
  var elt = exprList[i]
  if (elt) this$1.toAssignable(elt, isBinding)
}
return exprList

}

// Parses spread element.

pp$2.parseSpread = function(refDestructuringErrors) {

var node = this.startNode()
this.next()
node.argument = this.parseMaybeAssign(false, refDestructuringErrors)
return this.finishNode(node, "SpreadElement")

}

pp$2.parseRest = function(allowNonIdent, refDestructuringErrors) {

var node = this.startNode()
this.next()

// RestElement inside of a function parameter must be an identifier
if (allowNonIdent) node.argument = this.type === tt.name ? this.parseIdent() : this.unexpected()
else node.argument = this.type === tt.name || this.type === tt.bracketL ? this.parseBindingAtom(refDestructuringErrors) : this.unexpected()

return this.finishNode(node, "RestElement")

}

// Parses lvalue (assignable) atom.

pp$2.parseBindingAtom = function(refDestructuringErrors) {

if (this.options.ecmaVersion < 6) return this.parseIdent()
switch (this.type) {
case tt.name:
  return this.parseIdent()

case tt.bracketL:
  var node = this.startNode()
  this.next()
  node.elements = this.parseBindingList(tt.bracketR, true, true, false, refDestructuringErrors)
  return this.finishNode(node, "ArrayPattern")

case tt.braceL:
  return this.parseObj(true, refDestructuringErrors)

default:
  this.unexpected()
}

}

pp$2.parseBindingList = function(close, allowEmpty, allowTrailingComma, allowNonIdent, refDestructuringErrors) {

var this$1 = this;

var elts = [], first = true
while (!this.eat(close)) {
  if (first) first = false
  else this$1.expect(tt.comma)
  if (allowEmpty && this$1.type === tt.comma) {
    elts.push(null)
  } else if (allowTrailingComma && this$1.afterTrailingComma(close)) {
    break
  } else if (this$1.type === tt.ellipsis) {
    var rest = this$1.parseRest(allowNonIdent, refDestructuringErrors)
    this$1.parseBindingListItem(rest)
    elts.push(rest)
    if (this$1.type === tt.comma) this$1.raise(this$1.start, "Comma is not permitted after the rest element")
    this$1.expect(close)
    break
  } else {
    var elem = this$1.parseMaybeDefault(this$1.start, this$1.startLoc, null, refDestructuringErrors)
    this$1.parseBindingListItem(elem)
    elts.push(elem)
  }
}
return elts

}

pp$2.parseBindingListItem = function(param) {

return param

}

// Parses assignment pattern around given atom if possible.

pp$2.parseMaybeDefault = function(startPos, startLoc, left, refDestructuringErrors) {

left = left || this.parseBindingAtom(refDestructuringErrors)
if (this.options.ecmaVersion < 6 || !this.eat(tt.eq)) return left
var node = this.startNodeAt(startPos, startLoc)
node.left = left
node.right = this.parseMaybeAssign(false, refDestructuringErrors)
return this.finishNode(node, "AssignmentPattern")

}

// Verify that a node is an lval — something that can be assigned // to.

pp$2.checkLVal = function(expr, isBinding, checkClashes) {

var this$1 = this;

switch (expr.type) {
case "Identifier":
  if (this.strict && this.reservedWordsStrictBind.test(expr.name))
    this.raiseRecoverable(expr.start, (isBinding ? "Binding " : "Assigning to ") + expr.name + " in strict mode")
  if (checkClashes) {
    if (has(checkClashes, expr.name))
      this.raiseRecoverable(expr.start, "Argument name clash")
    checkClashes[expr.name] = true
  }
  break

case "MemberExpression":
  if (isBinding) this.raiseRecoverable(expr.start, (isBinding ? "Binding" : "Assigning to") + " member expression")
  break

case "ObjectPattern":
  for (var i = 0; i < expr.properties.length; i++)
    this$1.checkLVal(expr.properties[i].value, isBinding, checkClashes)
  break

case "ArrayPattern":
  for (var i$1 = 0; i$1 < expr.elements.length; i$1++) {
    var elem = expr.elements[i$1]
    if (elem) this$1.checkLVal(elem, isBinding, checkClashes)
  }
  break

case "AssignmentPattern":
  this.checkLVal(expr.left, isBinding, checkClashes)
  break

case "RestElement":
  this.checkLVal(expr.argument, isBinding, checkClashes)
  break

case "ParenthesizedExpression":
  this.checkLVal(expr.expression, isBinding, checkClashes)
  break

default:
  this.raise(expr.start, (isBinding ? "Binding" : "Assigning to") + " rvalue")
}

}

// A recursive descent parser operates by defining functions for all // syntactic elements, and recursively calling those, each function // advancing the input stream and returning an AST node. Precedence // of constructs (for example, the fact that `!x` means `!(x)` // instead of `(!x)` is handled by the fact that the parser // function that parses unary prefix operators is called first, and // in turn calls the function that parses `[]` subscripts — that // way, it'll receive the node for `x` already parsed, and wraps // that in the unary operator node. // // Acorn uses an [operator precedence parser] to handle binary // operator precedence, because it is much more compact than using // the technique outlined above, which uses different, nesting // functions to specify precedence, for all of the ten binary // precedence levels that JavaScript defines. // // [opp]: en.wikipedia.org/wiki/Operator-precedence_parser

var pp$3 = Parser.prototype

// Check if property name clashes with already added. // Object/class getters and setters are not allowed to clash — // either with each other or with an init property — and in // strict mode, init properties are also not allowed to be repeated.

pp$3.checkPropClash = function(prop, propHash) {

if (this.options.ecmaVersion >= 6 && (prop.computed || prop.method || prop.shorthand))
  return
var key = prop.key;
var name
switch (key.type) {
case "Identifier": name = key.name; break
case "Literal": name = String(key.value); break
default: return
}
var kind = prop.kind;
if (this.options.ecmaVersion >= 6) {
  if (name === "__proto__" && kind === "init") {
    if (propHash.proto) this.raiseRecoverable(key.start, "Redefinition of __proto__ property")
    propHash.proto = true
  }
  return
}
name = "$" + name
var other = propHash[name]
if (other) {
  var isGetSet = kind !== "init"
  if ((this.strict || isGetSet) && other[kind] || !(isGetSet ^ other.init))
    this.raiseRecoverable(key.start, "Redefinition of property")
} else {
  other = propHash[name] = {
    init: false,
    get: false,
    set: false
  }
}
other[kind] = true

}

// ### Expression parsing

// These nest, from the most general expression type at the top to // 'atomic', nondivisible expression types at the bottom. Most of // the functions will simply let the function(s) below them parse, // and, if the syntactic construct they handle is present, wrap // the AST node that the inner parser gave them in another node.

// Parse a full expression. The optional arguments are used to // forbid the `in` operator (in for loops initalization expressions) // and provide reference for storing '=' operator inside shorthand // property assignment in contexts where both object expression // and object pattern might appear (so it's possible to raise // delayed syntax error at correct position).

pp$3.parseExpression = function(noIn, refDestructuringErrors) {

var this$1 = this;

var startPos = this.start, startLoc = this.startLoc
var expr = this.parseMaybeAssign(noIn, refDestructuringErrors)
if (this.type === tt.comma) {
  var node = this.startNodeAt(startPos, startLoc)
  node.expressions = [expr]
  while (this.eat(tt.comma)) node.expressions.push(this$1.parseMaybeAssign(noIn, refDestructuringErrors))
  return this.finishNode(node, "SequenceExpression")
}
return expr

}

// Parse an assignment expression. This includes applications of // operators like `+=`.

pp$3.parseMaybeAssign = function(noIn, refDestructuringErrors, afterLeftParse) {

if (this.inGenerator && this.isContextual("yield")) return this.parseYield(refDestructuringErrors)

var ownDestructuringErrors = false
if (!refDestructuringErrors) {
  refDestructuringErrors = new DestructuringErrors
  ownDestructuringErrors = true
}
var startPos = this.start, startLoc = this.startLoc
if (this.type == tt.parenL || this.type == tt.name)
  this.potentialArrowAt = this.start
var left = this.parseMaybeConditional(noIn, refDestructuringErrors)
if (afterLeftParse) left = afterLeftParse.call(this, left, startPos, startLoc)
if (this.type.isAssign) {
  this.checkPatternErrors(refDestructuringErrors, true)
  var node = this.startNodeAt(startPos, startLoc)
  node.operator = this.value
  node.left = this.type === tt.eq ? this.toAssignable(left) : left
  refDestructuringErrors.shorthandAssign = 0 // reset because shorthand default was used correctly
  this.checkLVal(left)
  this.next()
  node.right = this.parseMaybeAssign(noIn, refDestructuringErrors)
  if (ownDestructuringErrors) this.checkExpressionErrors(refDestructuringErrors, true)
  return this.finishNode(node, "AssignmentExpression")
} else {
  if (ownDestructuringErrors) this.checkExpressionErrors(refDestructuringErrors, true)
}
return left

}

// Parse a ternary conditional (`?:`) operator.

pp$3.parseMaybeConditional = function(noIn, refDestructuringErrors) {

var startPos = this.start, startLoc = this.startLoc
var expr = this.parseExprOps(noIn, refDestructuringErrors)
if (this.checkExpressionErrors(refDestructuringErrors)) return expr
if (this.eat(tt.question)) {
  var node = this.startNodeAt(startPos, startLoc)
  node.test = expr
  node.consequent = this.parseMaybeAssign(false, refDestructuringErrors)
  this.expect(tt.colon)
  node.alternate = this.parseMaybeAssign(noIn, refDestructuringErrors)
  return this.finishNode(node, "ConditionalExpression")
}
return expr

}

// Start the precedence parser.

pp$3.parseExprOps = function(noIn, refDestructuringErrors) {

var startPos = this.start, startLoc = this.startLoc
var expr = this.parseMaybeUnary(refDestructuringErrors, false)
if (this.checkExpressionErrors(refDestructuringErrors)) return expr
return this.parseExprOp(expr, startPos, startLoc, -1, noIn, refDestructuringErrors)

}

// Parse binary operators with the operator precedence parsing // algorithm. `left` is the left-hand side of the operator. // `minPrec` provides context that allows the function to stop and // defer further parser to one of its callers when it encounters an // operator that has a lower precedence than the set it is parsing.

pp$3.parseExprOp = function(left, leftStartPos, leftStartLoc, minPrec, noIn, refDestructuringErrors) {

var prec = this.type.binop
if (prec != null && (!noIn || this.type !== tt._in)) {
  if (prec > minPrec) {
    var logical = this.type === tt.logicalOR || this.type === tt.logicalAND
    var op = this.value
    this.next()
    var startPos = this.start, startLoc = this.startLoc
    var right = this.parseExprOp(this.parseMaybeUnary(refDestructuringErrors, false), startPos, startLoc, prec, noIn, refDestructuringErrors)
    var node = this.buildBinary(leftStartPos, leftStartLoc, left, right, op, logical)
    return this.parseExprOp(node, leftStartPos, leftStartLoc, minPrec, noIn, refDestructuringErrors)
  }
}
return left

}

pp$3.buildBinary = function(startPos, startLoc, left, right, op, logical) {

var node = this.startNodeAt(startPos, startLoc)
node.left = left
node.operator = op
node.right = right
return this.finishNode(node, logical ? "LogicalExpression" : "BinaryExpression")

}

// Parse unary operators, both prefix and postfix.

pp$3.parseMaybeUnary = function(refDestructuringErrors, sawUnary) {

var this$1 = this;

var startPos = this.start, startLoc = this.startLoc, expr
if (this.inAsync && this.isContextual("await")) {
  expr = this.parseAwait(refDestructuringErrors)
  sawUnary = true
} else if (this.type.prefix) {
  var node = this.startNode(), update = this.type === tt.incDec
  node.operator = this.value
  node.prefix = true
  this.next()
  node.argument = this.parseMaybeUnary(refDestructuringErrors, true)
  this.checkExpressionErrors(refDestructuringErrors, true)
  if (update) this.checkLVal(node.argument)
  else if (this.strict && node.operator === "delete" &&
           node.argument.type === "Identifier")
    this.raiseRecoverable(node.start, "Deleting local variable in strict mode")
  else sawUnary = true
  expr = this.finishNode(node, update ? "UpdateExpression" : "UnaryExpression")
} else {
  expr = this.parseExprSubscripts(refDestructuringErrors)
  if (this.checkExpressionErrors(refDestructuringErrors)) return expr
  while (this.type.postfix && !this.canInsertSemicolon()) {
    var node$1 = this$1.startNodeAt(startPos, startLoc)
    node$1.operator = this$1.value
    node$1.prefix = false
    node$1.argument = expr
    this$1.checkLVal(expr)
    this$1.next()
    expr = this$1.finishNode(node$1, "UpdateExpression")
  }
}

if (!sawUnary && this.eat(tt.starstar))
  return this.buildBinary(startPos, startLoc, expr, this.parseMaybeUnary(refDestructuringErrors, false), "**", false)
else
  return expr

}

// Parse call, dot, and `[]`-subscript expressions.

pp$3.parseExprSubscripts = function(refDestructuringErrors) {

var startPos = this.start, startLoc = this.startLoc
var expr = this.parseExprAtom(refDestructuringErrors)
var skipArrowSubscripts = expr.type === "ArrowFunctionExpression" && this.input.slice(this.lastTokStart, this.lastTokEnd) !== ")"
if (this.checkExpressionErrors(refDestructuringErrors) || skipArrowSubscripts) return expr
return this.parseSubscripts(expr, startPos, startLoc, false, refDestructuringErrors)

}

pp$3.parseSubscripts = function(base, startPos, startLoc, noCalls, refContextDestructuringErrors) {

var this$1 = this;

for (;;) {
  var maybeAsyncArrow = this$1.options.ecmaVersion >= 8 && base.type === "Identifier" && base.name === "async" && !this$1.canInsertSemicolon()
  if (this$1.eat(tt.dot)) {
    var node = this$1.startNodeAt(startPos, startLoc)
    node.object = base
    node.property = this$1.parseIdent(true)
    node.computed = false
    base = this$1.finishNode(node, "MemberExpression")
  } else if (this$1.eat(tt.bracketL)) {
    var node$1 = this$1.startNodeAt(startPos, startLoc)
    node$1.object = base
    node$1.property = this$1.parseExpression(false, refContextDestructuringErrors)
    node$1.computed = true
    this$1.expect(tt.bracketR)
    base = this$1.finishNode(node$1, "MemberExpression")
  } else if (!noCalls && this$1.eat(tt.parenL)) {
    var refDestructuringErrors = new DestructuringErrors
    var exprList = this$1.parseExprList(tt.parenR, this$1.options.ecmaVersion >= 8, false, refDestructuringErrors)
    if (maybeAsyncArrow && !this$1.canInsertSemicolon() && this$1.eat(tt.arrow)) {
      this$1.checkPatternErrors(refDestructuringErrors, true)
      this$1.checkDefaultValueErrors(refDestructuringErrors, true, true)
      return this$1.parseArrowExpression(this$1.startNodeAt(startPos, startLoc), exprList, true)
    }
    this$1.checkExpressionErrors(refDestructuringErrors, true)
    if (refContextDestructuringErrors) {
      refContextDestructuringErrors.yield = refContextDestructuringErrors.yield || refDestructuringErrors.yield
      refContextDestructuringErrors.await = refContextDestructuringErrors.await || refDestructuringErrors.await
    }
    var node$2 = this$1.startNodeAt(startPos, startLoc)
    node$2.callee = base
    node$2.arguments = exprList
    base = this$1.finishNode(node$2, "CallExpression")
  } else if (this$1.type === tt.backQuote) {
    var node$3 = this$1.startNodeAt(startPos, startLoc)
    node$3.tag = base
    node$3.quasi = this$1.parseTemplate(refContextDestructuringErrors)
    base = this$1.finishNode(node$3, "TaggedTemplateExpression")
  } else {
    return base
  }
}

}

// Parse an atomic expression — either a single token that is an // expression, an expression started by a keyword like `function` or // `new`, or an expression wrapped in punctuation like `()`, `[]`, // or `{}`.

pp$3.parseExprAtom = function(refDestructuringErrors) {

var node, canBeArrow = this.potentialArrowAt == this.start
switch (this.type) {
case tt._super:
  if (!this.inFunction)
    this.raise(this.start, "'super' outside of function or class")

case tt._this:
  var type = this.type === tt._this ? "ThisExpression" : "Super"
  node = this.startNode()
  this.next()
  return this.finishNode(node, type)

case tt.name:
  var startPos = this.start, startLoc = this.startLoc
  var id = this.parseIdent(this.type !== tt.name)
  if (this.options.ecmaVersion >= 8 && id.name === "async" && !this.canInsertSemicolon() && this.eat(tt._function))
    return this.parseFunction(this.startNodeAt(startPos, startLoc), false, false, true)
  if (canBeArrow && !this.canInsertSemicolon()) {
    if (this.eat(tt.arrow))
      return this.parseArrowExpression(this.startNodeAt(startPos, startLoc), [id], false)
    if (this.options.ecmaVersion >= 8 && id.name === "async" && this.type === tt.name) {
      id = this.parseIdent()
      if (this.canInsertSemicolon() || !this.eat(tt.arrow))
        this.unexpected()
      return this.parseArrowExpression(this.startNodeAt(startPos, startLoc), [id], true)
    }
  }
  return id

case tt.regexp:
  var value = this.value
  node = this.parseLiteral(value.value)
  node.regex = {pattern: value.pattern, flags: value.flags}
  return node

case tt.num: case tt.string:
  return this.parseLiteral(this.value)

case tt._null: case tt._true: case tt._false:
  node = this.startNode()
  node.value = this.type === tt._null ? null : this.type === tt._true
  node.raw = this.type.keyword
  this.next()
  return this.finishNode(node, "Literal")

case tt.parenL:
  return this.parseParenAndDistinguishExpression(canBeArrow, refDestructuringErrors)

case tt.bracketL:
  node = this.startNode()
  this.next()
  node.elements = this.parseExprList(tt.bracketR, true, true, refDestructuringErrors)
  return this.finishNode(node, "ArrayExpression")

case tt.braceL:
  return this.parseObj(false, refDestructuringErrors)

case tt._function:
  node = this.startNode()
  this.next()
  return this.parseFunction(node, false, false, false)

case tt._class:
  return this.parseClass(this.startNode(), false, refDestructuringErrors)

case tt._new:
  return this.parseNew(refDestructuringErrors)

case tt.backQuote:
  return this.parseTemplate(refDestructuringErrors)

default:
  this.unexpected()
}

}

pp$3.parseLiteral = function(value) {

var node = this.startNode()
node.value = value
node.raw = this.input.slice(this.start, this.end)
this.next()
return this.finishNode(node, "Literal")

}

pp$3.parseParenExpression = function(refDestructuringErrors) {

this.expect(tt.parenL)
var val = this.parseExpression(false, refDestructuringErrors)
this.expect(tt.parenR)
return val

}

pp$3.parseParenAndDistinguishExpression = function(canBeArrow, refContextDestructuringErrors) {

var this$1 = this;

var startPos = this.start, startLoc = this.startLoc, val, allowTrailingComma = this.options.ecmaVersion >= 8
if (this.options.ecmaVersion >= 6) {
  this.next()

  var innerStartPos = this.start, innerStartLoc = this.startLoc
  var exprList = [], first = true, lastIsComma = false
  var refDestructuringErrors = new DestructuringErrors, spreadStart, innerParenStart
  while (this.type !== tt.parenR) {
    first ? first = false : this$1.expect(tt.comma)
    if (allowTrailingComma && this$1.afterTrailingComma(tt.parenR, true)) {
      lastIsComma = true
      break
    } else if (this$1.type === tt.ellipsis) {
      spreadStart = this$1.start
      exprList.push(this$1.parseParenItem(this$1.parseRest(false, refDestructuringErrors)))
      if (this$1.type === tt.comma) this$1.raise(this$1.start, "Comma is not permitted after the rest element")
      break
    } else {
      if (this$1.type === tt.parenL && !innerParenStart) {
        innerParenStart = this$1.start
      }
      exprList.push(this$1.parseMaybeAssign(false, refDestructuringErrors, this$1.parseParenItem))
    }
  }
  var innerEndPos = this.start, innerEndLoc = this.startLoc
  this.expect(tt.parenR)

  if (canBeArrow && !this.canInsertSemicolon() && this.eat(tt.arrow)) {
    this.checkPatternErrors(refDestructuringErrors, true)
    this.checkDefaultValueErrors(refDestructuringErrors, true, true)
    if (innerParenStart) this.unexpected(innerParenStart)
    return this.parseParenArrowList(startPos, startLoc, exprList)
  }

  if (!exprList.length || lastIsComma) this.unexpected(this.lastTokStart)
  if (spreadStart) this.unexpected(spreadStart)
  this.checkExpressionErrors(refDestructuringErrors, true)
  if (refContextDestructuringErrors) {
    refContextDestructuringErrors.yield = refContextDestructuringErrors.yield || refDestructuringErrors.yield
    refContextDestructuringErrors.await = refContextDestructuringErrors.await || refDestructuringErrors.await
  }

  if (exprList.length > 1) {
    val = this.startNodeAt(innerStartPos, innerStartLoc)
    val.expressions = exprList
    this.finishNodeAt(val, "SequenceExpression", innerEndPos, innerEndLoc)
  } else {
    val = exprList[0]
  }
} else {
  val = this.parseParenExpression(refContextDestructuringErrors)
}

if (this.options.preserveParens) {
  var par = this.startNodeAt(startPos, startLoc)
  par.expression = val
  return this.finishNode(par, "ParenthesizedExpression")
} else {
  return val
}

}

pp$3.parseParenItem = function(item) {

return item

}

pp$3.parseParenArrowList = function(startPos, startLoc, exprList) {

return this.parseArrowExpression(this.startNodeAt(startPos, startLoc), exprList, false)

}

// New's precedence is slightly tricky. It must allow its argument to // be a `[]` or dot subscript expression, but not a call — at least, // not without wrapping it in parentheses. Thus, it uses the noCalls // argument to parseSubscripts to prevent it from consuming the // argument list.

var empty$1 = []

pp$3.parseNew = function(refDestructuringErrors) {

var node = this.startNode()
var meta = this.parseIdent(true)
if (this.options.ecmaVersion >= 6 && this.eat(tt.dot)) {
  node.meta = meta
  node.property = this.parseIdent(true)
  if (node.property.name !== "target")
    this.raiseRecoverable(node.property.start, "The only valid meta property for new is new.target")
  if (!this.inFunction)
    this.raiseRecoverable(node.start, "new.target can only be used in functions")
  return this.finishNode(node, "MetaProperty")
}
var startPos = this.start, startLoc = this.startLoc
node.callee = this.parseSubscripts(this.parseExprAtom(refDestructuringErrors), startPos, startLoc, true, refDestructuringErrors)
if (this.eat(tt.parenL)) node.arguments = this.parseExprList(tt.parenR, this.options.ecmaVersion >= 8, false, refDestructuringErrors)
else node.arguments = empty$1
return this.finishNode(node, "NewExpression")

}

// Parse template expression.

pp$3.parseTemplateElement = function() {

var elem = this.startNode()
elem.value = {
  raw: this.input.slice(this.start, this.end).replace(/\r\n?/g, '\n'),
  cooked: this.value
}
this.next()
elem.tail = this.type === tt.backQuote
return this.finishNode(elem, "TemplateElement")

}

pp$3.parseTemplate = function(refDestructuringErrors) {

var this$1 = this;

var node = this.startNode()
this.next()
node.expressions = []
var curElt = this.parseTemplateElement()
node.quasis = [curElt]
while (!curElt.tail) {
  this$1.expect(tt.dollarBraceL)
  node.expressions.push(this$1.parseExpression(false, refDestructuringErrors))
  this$1.expect(tt.braceR)
  node.quasis.push(curElt = this$1.parseTemplateElement())
}
this.next()
return this.finishNode(node, "TemplateLiteral")

}

// Parse an object literal or binding pattern.

pp$3.parseObj = function(isPattern, refDestructuringErrors) {

var this$1 = this;

var node = this.startNode(), first = true, propHash = {}
node.properties = []
this.next()
while (!this.eat(tt.braceR)) {
  if (!first) {
    this$1.expect(tt.comma)
    if (this$1.afterTrailingComma(tt.braceR)) break
  } else first = false

  var prop = this$1.startNode(), isGenerator, isAsync, startPos, startLoc
  if (this$1.options.ecmaVersion >= 6) {
    prop.method = false
    prop.shorthand = false
    if (isPattern || refDestructuringErrors) {
      startPos = this$1.start
      startLoc = this$1.startLoc
    }
    if (!isPattern)
      isGenerator = this$1.eat(tt.star)
  }
  this$1.parsePropertyName(prop, refDestructuringErrors)
  if (!isPattern && this$1.options.ecmaVersion >= 8 && !isGenerator && !prop.computed &&
      prop.key.type === "Identifier" && prop.key.name === "async" && this$1.type !== tt.parenL &&
      !this$1.canInsertSemicolon()) {
    isAsync = true
    this$1.parsePropertyName(prop, refDestructuringErrors)
  } else {
    isAsync = false
  }
  this$1.parsePropertyValue(prop, isPattern, isGenerator, isAsync, startPos, startLoc, refDestructuringErrors)
  this$1.checkPropClash(prop, propHash)
  node.properties.push(this$1.finishNode(prop, "Property"))
}
return this.finishNode(node, isPattern ? "ObjectPattern" : "ObjectExpression")

}

pp$3.parsePropertyValue = function(prop, isPattern, isGenerator, isAsync, startPos, startLoc, refDestructuringErrors) {

if ((isGenerator || isAsync) && this.type === tt.colon)
  this.unexpected()

if (this.eat(tt.colon)) {
  prop.value = isPattern ? this.parseMaybeDefault(this.start, this.startLoc, null, refDestructuringErrors) : this.parseMaybeAssign(false, refDestructuringErrors)
  prop.kind = "init"
} else if (this.options.ecmaVersion >= 6 && this.type === tt.parenL) {
  if (isPattern) this.unexpected()
  prop.kind = "init"
  prop.method = true
  prop.value = this.parseMethod(isGenerator, isAsync)
} else if (this.options.ecmaVersion >= 5 && !prop.computed && prop.key.type === "Identifier" &&
           (prop.key.name === "get" || prop.key.name === "set") &&
           (this.type != tt.comma && this.type != tt.braceR)) {
  if (isGenerator || isAsync || isPattern) this.unexpected()
  prop.kind = prop.key.name
  this.parsePropertyName(prop, refDestructuringErrors)
  prop.value = this.parseMethod(false, false)
  var paramCount = prop.kind === "get" ? 0 : 1
  if (prop.value.params.length !== paramCount) {
    var start = prop.value.start
    if (prop.kind === "get")
      this.raiseRecoverable(start, "getter should have no params")
    else
      this.raiseRecoverable(start, "setter should have exactly one param")
  } else {
    if (prop.kind === "set" && prop.value.params[0].type === "RestElement")
      this.raiseRecoverable(prop.value.params[0].start, "Setter cannot use rest params")
  }
} else if (this.options.ecmaVersion >= 6 && !prop.computed && prop.key.type === "Identifier") {
  if (this.keywords.test(prop.key.name) ||
      (this.strict ? this.reservedWordsStrict : this.reservedWords).test(prop.key.name) ||
      (this.inGenerator && prop.key.name == "yield") ||
      (this.inAsync && prop.key.name == "await"))
    this.raiseRecoverable(prop.key.start, "'" + prop.key.name + "' can not be used as shorthand property")
  prop.kind = "init"
  if (isPattern) {
    prop.value = this.parseMaybeDefault(startPos, startLoc, prop.key, refDestructuringErrors)
  } else if (this.type === tt.eq && refDestructuringErrors) {
    if (!refDestructuringErrors.shorthandAssign)
      refDestructuringErrors.shorthandAssign = this.start
    prop.value = this.parseMaybeDefault(startPos, startLoc, prop.key, refDestructuringErrors)
  } else {
    prop.value = prop.key
  }
  prop.shorthand = true
} else this.unexpected()

}

pp$3.parsePropertyName = function(prop, refDestructuringErrors) {

if (this.options.ecmaVersion >= 6) {
  if (this.eat(tt.bracketL)) {
    prop.computed = true
    prop.key = this.parseMaybeAssign(false, refDestructuringErrors)
    this.expect(tt.bracketR)
    return prop.key
  } else {
    prop.computed = false
  }
}
return prop.key = this.type === tt.num || this.type === tt.string ? this.parseExprAtom(refDestructuringErrors) : this.parseIdent(true)

}

// Initialize empty function node.

pp$3.initFunction = function(node) {

node.id = null
if (this.options.ecmaVersion >= 6) {
  node.generator = false
  node.expression = false
}
if (this.options.ecmaVersion >= 8)
  node.async = false

}

// Parse object or class method.

pp$3.parseMethod = function(isGenerator, isAsync) {

var node = this.startNode(), refDestructuringErrors = new DestructuringErrors, oldInGen = this.inGenerator, oldInAsync = this.inAsync
this.initFunction(node)
if (this.options.ecmaVersion >= 6)
  node.generator = isGenerator
if (this.options.ecmaVersion >= 8)
  node.async = !!isAsync
this.inGenerator = node.generator
this.inAsync = node.async
this.expect(tt.parenL)
node.params = this.parseBindingList(tt.parenR, false, this.options.ecmaVersion >= 8, false, refDestructuringErrors)
this.checkDefaultValueErrors(refDestructuringErrors, false, true)
this.parseFunctionBody(node, false)
this.inGenerator = oldInGen
this.inAsync = oldInAsync
return this.finishNode(node, "FunctionExpression")

}

// Parse arrow function expression with given parameters.

pp$3.parseArrowExpression = function(node, params, isAsync) {

var oldInGen = this.inGenerator, oldInAsync = this.inAsync
this.initFunction(node)
if (this.options.ecmaVersion >= 8)
  node.async = !!isAsync
this.inGenerator = false
this.inAsync = node.async
node.params = this.toAssignableList(params, true)
this.parseFunctionBody(node, true)
this.inGenerator = oldInGen
this.inAsync = oldInAsync
return this.finishNode(node, "ArrowFunctionExpression")

}

// Parse function body and check parameters.

pp$3.parseFunctionBody = function(node, isArrowFunction) {

var isExpression = isArrowFunction && this.type !== tt.braceL

if (isExpression) {
  node.body = this.parseMaybeAssign()
  node.expression = true
} else {
  // Start a new scope with regard to labels and the `inFunction`
  // flag (restore them to their old value afterwards).
  var oldInFunc = this.inFunction, oldLabels = this.labels
  this.inFunction = true; this.labels = []
  node.body = this.parseBlock(true)
  node.expression = false
  this.inFunction = oldInFunc; this.labels = oldLabels
}

// If this is a strict mode function, verify that argument names
// are not repeated, and it does not try to bind the words `eval`
// or `arguments`.
var useStrict = (!isExpression && node.body.body.length && this.isUseStrict(node.body.body[0])) ? node.body.body[0] : null
if (useStrict && this.options.ecmaVersion >= 7 && !this.isSimpleParamList(node.params))
  this.raiseRecoverable(useStrict.start, "Illegal 'use strict' directive in function with non-simple parameter list")

if (this.strict || useStrict) {
  var oldStrict = this.strict
  this.strict = true
  if (node.id)
    this.checkLVal(node.id, true)
  this.checkParams(node)
  this.strict = oldStrict
} else if (isArrowFunction || !this.isSimpleParamList(node.params)) {
  this.checkParams(node)
}

}

pp$3.isSimpleParamList = function(params) {

for (var i = 0; i < params.length; i++)
  if (params[i].type !== "Identifier") return false
return true

}

// Checks function params for various disallowed patterns such as using “eval” // or “arguments” and duplicate parameters.

pp$3.checkParams = function(node) {

var this$1 = this;

var nameHash = {}
for (var i = 0; i < node.params.length; i++) this$1.checkLVal(node.params[i], true, nameHash)

}

// Parses a comma-separated list of expressions, and returns them as // an array. `close` is the token type that ends the list, and // `allowEmpty` can be turned on to allow subsequent commas with // nothing in between them to be parsed as `null` (which is needed // for array literals).

pp$3.parseExprList = function(close, allowTrailingComma, allowEmpty, refDestructuringErrors) {

var this$1 = this;

var elts = [], first = true
while (!this.eat(close)) {
  if (!first) {
    this$1.expect(tt.comma)
    if (allowTrailingComma && this$1.afterTrailingComma(close)) break
  } else first = false

  var elt
  if (allowEmpty && this$1.type === tt.comma)
    elt = null
  else if (this$1.type === tt.ellipsis) {
    elt = this$1.parseSpread(refDestructuringErrors)
    if (this$1.type === tt.comma && refDestructuringErrors && !refDestructuringErrors.trailingComma) {
      refDestructuringErrors.trailingComma = this$1.start
    }
  } else
    elt = this$1.parseMaybeAssign(false, refDestructuringErrors)
  elts.push(elt)
}
return elts

}

// Parse the next token as an identifier. If `liberal` is true (used // when parsing properties), it will also convert keywords into // identifiers.

pp$3.parseIdent = function(liberal) {

var node = this.startNode()
if (liberal && this.options.allowReserved == "never") liberal = false
if (this.type === tt.name) {
  if (!liberal && (this.strict ? this.reservedWordsStrict : this.reservedWords).test(this.value) &&
      (this.options.ecmaVersion >= 6 ||
       this.input.slice(this.start, this.end).indexOf("\\") == -1))
    this.raiseRecoverable(this.start, "The keyword '" + this.value + "' is reserved")
  if (this.inGenerator && this.value === "yield")
    this.raiseRecoverable(this.start, "Can not use 'yield' as identifier inside a generator")
  if (this.inAsync && this.value === "await")
    this.raiseRecoverable(this.start, "Can not use 'await' as identifier inside an async function")
  node.name = this.value
} else if (liberal && this.type.keyword) {
  node.name = this.type.keyword
} else {
  this.unexpected()
}
this.next()
return this.finishNode(node, "Identifier")

}

// Parses yield expression inside generator.

pp$3.parseYield = function(refDestructuringErrors) {

var node = this.startNode()
if (refDestructuringErrors) refDestructuringErrors.yield = this.start
this.next()
if (this.type == tt.semi || this.canInsertSemicolon() || (this.type != tt.star && !this.type.startsExpr)) {
  node.delegate = false
  node.argument = null
} else {
  node.delegate = this.eat(tt.star)
  node.argument = this.parseMaybeAssign(false, refDestructuringErrors)
}
return this.finishNode(node, "YieldExpression")

}

pp$3.parseAwait = function(refDestructuringErrors) {

var node = this.startNode()
if (refDestructuringErrors) refDestructuringErrors.await = this.start
this.next()
node.argument = this.parseMaybeUnary(refDestructuringErrors, true)
return this.finishNode(node, "AwaitExpression")

}

var pp$4 = Parser.prototype

// This function is used to raise exceptions on parse errors. It // takes an offset integer (into the current `input`) to indicate // the location of the error, attaches the position to the end // of the error message, and then raises a `SyntaxError` with that // message.

pp$4.raise = function(pos, message) {

var loc = getLineInfo(this.input, pos)
message += " (" + loc.line + ":" + loc.column + ")"
var err = new SyntaxError(message)
err.pos = pos; err.loc = loc; err.raisedAt = this.pos
throw err

}

pp$4.raiseRecoverable = pp$4.raise

pp$4.curPosition = function() {

if (this.options.locations) {
  return new Position(this.curLine, this.pos - this.lineStart)
}

}

var Node = function Node(parser, pos, loc) {

this.type = ""
this.start = pos
this.end = 0
if (parser.options.locations)
  this.loc = new SourceLocation(parser, loc)
if (parser.options.directSourceFile)
  this.sourceFile = parser.options.directSourceFile
if (parser.options.ranges)
  this.range = [pos, 0]

};

// Start an AST node, attaching a start offset.

var pp$5 = Parser.prototype

pp$5.startNode = function() {

return new Node(this, this.start, this.startLoc)

}

pp$5.startNodeAt = function(pos, loc) {

return new Node(this, pos, loc)

}

// Finish an AST node, adding `type` and `end` properties.

function finishNodeAt(node, type, pos, loc) {

node.type = type
node.end = pos
if (this.options.locations)
  node.loc.end = loc
if (this.options.ranges)
  node.range[1] = pos
return node

}

pp$5.finishNode = function(node, type) {

return finishNodeAt.call(this, node, type, this.lastTokEnd, this.lastTokEndLoc)

}

// Finish node at given position

pp$5.finishNodeAt = function(node, type, pos, loc) {

return finishNodeAt.call(this, node, type, pos, loc)

}

// The algorithm used to determine whether a regexp can appear at a // given point in the program is loosely based on sweet.js' approach. // See github.com/mozilla/sweet.js/wiki/design

var TokContext = function TokContext(token, isExpr, preserveSpace, override) {

this.token = token
this.isExpr = !!isExpr
this.preserveSpace = !!preserveSpace
this.override = override

};

var types = {

b_stat: new TokContext("{", false),
b_expr: new TokContext("{", true),
b_tmpl: new TokContext("${", true),
p_stat: new TokContext("(", false),
p_expr: new TokContext("(", true),
q_tmpl: new TokContext("`", true, true, function (p) { return p.readTmplToken(); }),
f_expr: new TokContext("function", true)

}

var pp$6 = Parser.prototype

pp$6.initialContext = function() {

return [types.b_stat]

}

pp$6.braceIsBlock = function(prevType) {

if (prevType === tt.colon) {
  var parent = this.curContext()
  if (parent === types.b_stat || parent === types.b_expr)
    return !parent.isExpr
}
if (prevType === tt._return)
  return lineBreak.test(this.input.slice(this.lastTokEnd, this.start))
if (prevType === tt._else || prevType === tt.semi || prevType === tt.eof || prevType === tt.parenR)
  return true
if (prevType == tt.braceL)
  return this.curContext() === types.b_stat
return !this.exprAllowed

}

pp$6.updateContext = function(prevType) {

var update, type = this.type
if (type.keyword && prevType == tt.dot)
  this.exprAllowed = false
else if (update = type.updateContext)
  update.call(this, prevType)
else
  this.exprAllowed = type.beforeExpr

}

// Token-specific context update code

tt.parenR.updateContext = tt.braceR.updateContext = function() {

if (this.context.length == 1) {
  this.exprAllowed = true
  return
}
var out = this.context.pop()
if (out === types.b_stat && this.curContext() === types.f_expr) {
  this.context.pop()
  this.exprAllowed = false
} else if (out === types.b_tmpl) {
  this.exprAllowed = true
} else {
  this.exprAllowed = !out.isExpr
}

}

tt.braceL.updateContext = function(prevType) {

this.context.push(this.braceIsBlock(prevType) ? types.b_stat : types.b_expr)
this.exprAllowed = true

}

tt.dollarBraceL.updateContext = function() {

this.context.push(types.b_tmpl)
this.exprAllowed = true

}

tt.parenL.updateContext = function(prevType) {

var statementParens = prevType === tt._if || prevType === tt._for || prevType === tt._with || prevType === tt._while
this.context.push(statementParens ? types.p_stat : types.p_expr)
this.exprAllowed = true

}

tt.incDec.updateContext = function() {

// tokExprAllowed stays unchanged

}

tt._function.updateContext = function(prevType) {

if (prevType.beforeExpr && prevType !== tt.semi && prevType !== tt._else &&
    !((prevType === tt.colon || prevType === tt.braceL) && this.curContext() === types.b_stat))
  this.context.push(types.f_expr)
this.exprAllowed = false

}

tt.backQuote.updateContext = function() {

if (this.curContext() === types.q_tmpl)
  this.context.pop()
else
  this.context.push(types.q_tmpl)
this.exprAllowed = false

}

// Object type used to represent tokens. Note that normally, tokens // simply exist as properties on the parser object. This is only // used for the onToken callback and the external tokenizer.

var Token = function Token(p) {

this.type = p.type
this.value = p.value
this.start = p.start
this.end = p.end
if (p.options.locations)
  this.loc = new SourceLocation(p, p.startLoc, p.endLoc)
if (p.options.ranges)
  this.range = [p.start, p.end]

};

// ## Tokenizer

var pp$7 = Parser.prototype

// Are we running under Rhino? var isRhino = typeof Packages == “object” && Object.prototype.toString.call(Packages) == “[object JavaPackage]”

// Move to the next token

pp$7.next = function() {

if (this.options.onToken)
  this.options.onToken(new Token(this))

this.lastTokEnd = this.end
this.lastTokStart = this.start
this.lastTokEndLoc = this.endLoc
this.lastTokStartLoc = this.startLoc
this.nextToken()

}

pp$7.getToken = function() {

this.next()
return new Token(this)

}

// If we're in an ES6 environment, make parsers iterable if (typeof Symbol !== “undefined”)

pp$7[Symbol.iterator] = function () {
  var self = this
  return {next: function () {
    var token = self.getToken()
    return {
      done: token.type === tt.eof,
      value: token
    }
  }}
}

// Toggle strict mode. Re-reads the next number or string to please // pedantic tests (`“use strict”; 010;` should fail).

pp$7.setStrict = function(strict) {

var this$1 = this;

this.strict = strict
if (this.type !== tt.num && this.type !== tt.string) return
this.pos = this.start
if (this.options.locations) {
  while (this.pos < this.lineStart) {
    this$1.lineStart = this$1.input.lastIndexOf("\n", this$1.lineStart - 2) + 1
    --this$1.curLine
  }
}
this.nextToken()

}

pp$7.curContext = function() {

return this.context[this.context.length - 1]

}

// Read a single token, updating the parser object's token-related // properties.

pp$7.nextToken = function() {

var curContext = this.curContext()
if (!curContext || !curContext.preserveSpace) this.skipSpace()

this.start = this.pos
if (this.options.locations) this.startLoc = this.curPosition()
if (this.pos >= this.input.length) return this.finishToken(tt.eof)

if (curContext.override) return curContext.override(this)
else this.readToken(this.fullCharCodeAtPos())

}

pp$7.readToken = function(code) {

// Identifier or keyword. '\uXXXX' sequences are allowed in
// identifiers, so '\' also dispatches to that.
if (isIdentifierStart(code, this.options.ecmaVersion >= 6) || code === 92 /* '\' */)
  return this.readWord()

return this.getTokenFromCode(code)

}

pp$7.fullCharCodeAtPos = function() {

var code = this.input.charCodeAt(this.pos)
if (code <= 0xd7ff || code >= 0xe000) return code
var next = this.input.charCodeAt(this.pos + 1)
return (code << 10) + next - 0x35fdc00

}

pp$7.skipBlockComment = function() {

var this$1 = this;

var startLoc = this.options.onComment && this.curPosition()
var start = this.pos, end = this.input.indexOf("*/", this.pos += 2)
if (end === -1) this.raise(this.pos - 2, "Unterminated comment")
this.pos = end + 2
if (this.options.locations) {
  lineBreakG.lastIndex = start
  var match
  while ((match = lineBreakG.exec(this.input)) && match.index < this.pos) {
    ++this$1.curLine
    this$1.lineStart = match.index + match[0].length
  }
}
if (this.options.onComment)
  this.options.onComment(true, this.input.slice(start + 2, end), start, this.pos,
                         startLoc, this.curPosition())

}

pp$7.skipLineComment = function(startSkip) {

var this$1 = this;

var start = this.pos
var startLoc = this.options.onComment && this.curPosition()
var ch = this.input.charCodeAt(this.pos+=startSkip)
while (this.pos < this.input.length && ch !== 10 && ch !== 13 && ch !== 8232 && ch !== 8233) {
  ++this$1.pos
  ch = this$1.input.charCodeAt(this$1.pos)
}
if (this.options.onComment)
  this.options.onComment(false, this.input.slice(start + startSkip, this.pos), start, this.pos,
                         startLoc, this.curPosition())

}

// Called at the start of the parse and after every token. Skips // whitespace and comments, and.

pp$7.skipSpace = function() {

var this$1 = this;

loop: while (this.pos < this.input.length) {
  var ch = this$1.input.charCodeAt(this$1.pos)
  switch (ch) {
    case 32: case 160: // ' '
      ++this$1.pos
      break
    case 13:
      if (this$1.input.charCodeAt(this$1.pos + 1) === 10) {
        ++this$1.pos
      }
    case 10: case 8232: case 8233:
      ++this$1.pos
      if (this$1.options.locations) {
        ++this$1.curLine
        this$1.lineStart = this$1.pos
      }
      break
    case 47: // '/'
      switch (this$1.input.charCodeAt(this$1.pos + 1)) {
        case 42: // '*'
          this$1.skipBlockComment()
          break
        case 47:
          this$1.skipLineComment(2)
          break
        default:
          break loop
      }
      break
    default:
      if (ch > 8 && ch < 14 || ch >= 5760 && nonASCIIwhitespace.test(String.fromCharCode(ch))) {
        ++this$1.pos
      } else {
        break loop
      }
  }
}

}

// Called at the end of every token. Sets `end`, `val`, and // maintains `context` and `exprAllowed`, and skips the space after // the token, so that the next one's `start` will point at the // right position.

pp$7.finishToken = function(type, val) {

this.end = this.pos
if (this.options.locations) this.endLoc = this.curPosition()
var prevType = this.type
this.type = type
this.value = val

this.updateContext(prevType)

}

// ### Token reading

// This is the function that is called to fetch the next token. It // is somewhat obscure, because it works in character codes rather // than characters, and because operator parsing has been inlined // into it. // // All in the name of speed. // pp$7.readToken_dot = function() {

var next = this.input.charCodeAt(this.pos + 1)
if (next >= 48 && next <= 57) return this.readNumber(true)
var next2 = this.input.charCodeAt(this.pos + 2)
if (this.options.ecmaVersion >= 6 && next === 46 && next2 === 46) { // 46 = dot '.'
  this.pos += 3
  return this.finishToken(tt.ellipsis)
} else {
  ++this.pos
  return this.finishToken(tt.dot)
}

}

pp$7.readToken_slash = function() { // '/'

var next = this.input.charCodeAt(this.pos + 1)
if (this.exprAllowed) {++this.pos; return this.readRegexp()}
if (next === 61) return this.finishOp(tt.assign, 2)
return this.finishOp(tt.slash, 1)

}

pp$7.readToken_mult_modulo_exp = function(code) { // '%*'

var next = this.input.charCodeAt(this.pos + 1)
var size = 1
var tokentype = code === 42 ? tt.star : tt.modulo

// exponentiation operator ** and **=
if (this.options.ecmaVersion >= 7 && next === 42) {
  ++size
  tokentype = tt.starstar
  next = this.input.charCodeAt(this.pos + 2)
}

if (next === 61) return this.finishOp(tt.assign, size + 1)
return this.finishOp(tokentype, size)

}

pp$7.readToken_pipe_amp = function(code) { // '|&'

var next = this.input.charCodeAt(this.pos + 1)
if (next === code) return this.finishOp(code === 124 ? tt.logicalOR : tt.logicalAND, 2)
if (next === 61) return this.finishOp(tt.assign, 2)
return this.finishOp(code === 124 ? tt.bitwiseOR : tt.bitwiseAND, 1)

}

pp$7.readToken_caret = function() { // '^'

var next = this.input.charCodeAt(this.pos + 1)
if (next === 61) return this.finishOp(tt.assign, 2)
return this.finishOp(tt.bitwiseXOR, 1)

}

pp$7.readToken_plus_min = function(code) { // '+-'

var next = this.input.charCodeAt(this.pos + 1)
if (next === code) {
  if (next == 45 && this.input.charCodeAt(this.pos + 2) == 62 &&
      lineBreak.test(this.input.slice(this.lastTokEnd, this.pos))) {
    // A `-->` line comment
    this.skipLineComment(3)
    this.skipSpace()
    return this.nextToken()
  }
  return this.finishOp(tt.incDec, 2)
}
if (next === 61) return this.finishOp(tt.assign, 2)
return this.finishOp(tt.plusMin, 1)

}

pp$7.readToken_lt_gt = function(code) { // '<>'

var next = this.input.charCodeAt(this.pos + 1)
var size = 1
if (next === code) {
  size = code === 62 && this.input.charCodeAt(this.pos + 2) === 62 ? 3 : 2
  if (this.input.charCodeAt(this.pos + size) === 61) return this.finishOp(tt.assign, size + 1)
  return this.finishOp(tt.bitShift, size)
}
if (next == 33 && code == 60 && this.input.charCodeAt(this.pos + 2) == 45 &&
    this.input.charCodeAt(this.pos + 3) == 45) {
  if (this.inModule) this.unexpected()
  // `<!--`, an XML-style comment that should be interpreted as a line comment
  this.skipLineComment(4)
  this.skipSpace()
  return this.nextToken()
}
if (next === 61) size = 2
return this.finishOp(tt.relational, size)

}

pp$7.readToken_eq_excl = function(code) { // '=!'

var next = this.input.charCodeAt(this.pos + 1)
if (next === 61) return this.finishOp(tt.equality, this.input.charCodeAt(this.pos + 2) === 61 ? 3 : 2)
if (code === 61 && next === 62 && this.options.ecmaVersion >= 6) { // '=>'
  this.pos += 2
  return this.finishToken(tt.arrow)
}
return this.finishOp(code === 61 ? tt.eq : tt.prefix, 1)

}

pp$7.getTokenFromCode = function(code) {

switch (code) {
  // The interpretation of a dot depends on whether it is followed
  // by a digit or another two dots.
case 46: // '.'
  return this.readToken_dot()

  // Punctuation tokens.
case 40: ++this.pos; return this.finishToken(tt.parenL)
case 41: ++this.pos; return this.finishToken(tt.parenR)
case 59: ++this.pos; return this.finishToken(tt.semi)
case 44: ++this.pos; return this.finishToken(tt.comma)
case 91: ++this.pos; return this.finishToken(tt.bracketL)
case 93: ++this.pos; return this.finishToken(tt.bracketR)
case 123: ++this.pos; return this.finishToken(tt.braceL)
case 125: ++this.pos; return this.finishToken(tt.braceR)
case 58: ++this.pos; return this.finishToken(tt.colon)
case 63: ++this.pos; return this.finishToken(tt.question)

case 96: // '`'
  if (this.options.ecmaVersion < 6) break
  ++this.pos
  return this.finishToken(tt.backQuote)

case 48: // '0'
  var next = this.input.charCodeAt(this.pos + 1)
  if (next === 120 || next === 88) return this.readRadixNumber(16) // '0x', '0X' - hex number
  if (this.options.ecmaVersion >= 6) {
    if (next === 111 || next === 79) return this.readRadixNumber(8) // '0o', '0O' - octal number
    if (next === 98 || next === 66) return this.readRadixNumber(2) // '0b', '0B' - binary number
  }
  // Anything else beginning with a digit is an integer, octal
  // number, or float.
case 49: case 50: case 51: case 52: case 53: case 54: case 55: case 56: case 57: // 1-9
  return this.readNumber(false)

  // Quotes produce strings.
case 34: case 39: // '"', "'"
  return this.readString(code)

  // Operators are parsed inline in tiny state machines. '=' (61) is
  // often referred to. `finishOp` simply skips the amount of
  // characters it is given as second argument, and returns a token
  // of the type given by its first argument.

case 47: // '/'
  return this.readToken_slash()

case 37: case 42: // '%*'
  return this.readToken_mult_modulo_exp(code)

case 124: case 38: // '|&'
  return this.readToken_pipe_amp(code)

case 94: // '^'
  return this.readToken_caret()

case 43: case 45: // '+-'
  return this.readToken_plus_min(code)

case 60: case 62: // '<>'
  return this.readToken_lt_gt(code)

case 61: case 33: // '=!'
  return this.readToken_eq_excl(code)

case 126: // '~'
  return this.finishOp(tt.prefix, 1)
}

this.raise(this.pos, "Unexpected character '" + codePointToString(code) + "'")

}

pp$7.finishOp = function(type, size) {

var str = this.input.slice(this.pos, this.pos + size)
this.pos += size
return this.finishToken(type, str)

}

// Parse a regular expression. Some context-awareness is necessary, // since a '/' inside a '[]' set does not end the expression.

function tryCreateRegexp(src, flags, throwErrorAt, parser) {

try {
  return new RegExp(src, flags)
} catch (e) {
  if (throwErrorAt !== undefined) {
    if (e instanceof SyntaxError) parser.raise(throwErrorAt, "Error parsing regular expression: " + e.message)
    throw e
  }
}

}

var regexpUnicodeSupport = !!tryCreateRegexp(“uffff”, “u”)

pp$7.readRegexp = function() {

var this$1 = this;

var escaped, inClass, start = this.pos
for (;;) {
  if (this$1.pos >= this$1.input.length) this$1.raise(start, "Unterminated regular expression")
  var ch = this$1.input.charAt(this$1.pos)
  if (lineBreak.test(ch)) this$1.raise(start, "Unterminated regular expression")
  if (!escaped) {
    if (ch === "[") inClass = true
    else if (ch === "]" && inClass) inClass = false
    else if (ch === "/" && !inClass) break
    escaped = ch === "\\"
  } else escaped = false
  ++this$1.pos
}
var content = this.input.slice(start, this.pos)
++this.pos
// Need to use `readWord1` because '\uXXXX' sequences are allowed
// here (don't ask).
var mods = this.readWord1()
var tmp = content, tmpFlags = ""
if (mods) {
  var validFlags = /^[gim]*$/
  if (this.options.ecmaVersion >= 6) validFlags = /^[gimuy]*$/
  if (!validFlags.test(mods)) this.raise(start, "Invalid regular expression flag")
  if (mods.indexOf("u") >= 0) {
    if (regexpUnicodeSupport) {
      tmpFlags = "u"
    } else {
      // Replace each astral symbol and every Unicode escape sequence that
      // possibly represents an astral symbol or a paired surrogate with a
      // single ASCII symbol to avoid throwing on regular expressions that
      // are only valid in combination with the `/u` flag.
      // Note: replacing with the ASCII symbol `x` might cause false
      // negatives in unlikely scenarios. For example, `[\u{61}-b]` is a
      // perfectly valid pattern that is equivalent to `[a-b]`, but it would
      // be replaced by `[x-b]` which throws an error.
      tmp = tmp.replace(/\\u\{([0-9a-fA-F]+)\}/g, function (_match, code, offset) {
        code = Number("0x" + code)
        if (code > 0x10FFFF) this$1.raise(start + offset + 3, "Code point out of bounds")
        return "x"
      })
      tmp = tmp.replace(/\\u([a-fA-F0-9]{4})|[\uD800-\uDBFF][\uDC00-\uDFFF]/g, "x")
      tmpFlags = tmpFlags.replace("u", "")
    }
  }
}
// Detect invalid regular expressions.
var value = null
// Rhino's regular expression parser is flaky and throws uncatchable exceptions,
// so don't do detection if we are running under Rhino
if (!isRhino) {
  tryCreateRegexp(tmp, tmpFlags, start, this)
  // Get a regular expression object for this pattern-flag pair, or `null` in
  // case the current environment doesn't support the flags it uses.
  value = tryCreateRegexp(content, mods)
}
return this.finishToken(tt.regexp, {pattern: content, flags: mods, value: value})

}

// Read an integer in the given radix. Return null if zero digits // were read, the integer value otherwise. When `len` is given, this // will return `null` unless the integer has exactly `len` digits.

pp$7.readInt = function(radix, len) {

var this$1 = this;

var start = this.pos, total = 0
for (var i = 0, e = len == null ? Infinity : len; i < e; ++i) {
  var code = this$1.input.charCodeAt(this$1.pos), val
  if (code >= 97) val = code - 97 + 10 // a
  else if (code >= 65) val = code - 65 + 10 // A
  else if (code >= 48 && code <= 57) val = code - 48 // 0-9
  else val = Infinity
  if (val >= radix) break
  ++this$1.pos
  total = total * radix + val
}
if (this.pos === start || len != null && this.pos - start !== len) return null

return total

}

pp$7.readRadixNumber = function(radix) {

this.pos += 2 // 0x
var val = this.readInt(radix)
if (val == null) this.raise(this.start + 2, "Expected number in radix " + radix)
if (isIdentifierStart(this.fullCharCodeAtPos())) this.raise(this.pos, "Identifier directly after number")
return this.finishToken(tt.num, val)

}

// Read an integer, octal integer, or floating-point number.

pp$7.readNumber = function(startsWithDot) {

var start = this.pos, isFloat = false, octal = this.input.charCodeAt(this.pos) === 48
if (!startsWithDot && this.readInt(10) === null) this.raise(start, "Invalid number")
var next = this.input.charCodeAt(this.pos)
if (next === 46) { // '.'
  ++this.pos
  this.readInt(10)
  isFloat = true
  next = this.input.charCodeAt(this.pos)
}
if (next === 69 || next === 101) { // 'eE'
  next = this.input.charCodeAt(++this.pos)
  if (next === 43 || next === 45) ++this.pos // '+-'
  if (this.readInt(10) === null) this.raise(start, "Invalid number")
  isFloat = true
}
if (isIdentifierStart(this.fullCharCodeAtPos())) this.raise(this.pos, "Identifier directly after number")

var str = this.input.slice(start, this.pos), val
if (isFloat) val = parseFloat(str)
else if (!octal || str.length === 1) val = parseInt(str, 10)
else if (/[89]/.test(str) || this.strict) this.raise(start, "Invalid number")
else val = parseInt(str, 8)
return this.finishToken(tt.num, val)

}

// Read a string value, interpreting backslash-escapes.

pp$7.readCodePoint = function() {

var ch = this.input.charCodeAt(this.pos), code

if (ch === 123) {
  if (this.options.ecmaVersion < 6) this.unexpected()
  var codePos = ++this.pos
  code = this.readHexChar(this.input.indexOf('}', this.pos) - this.pos)
  ++this.pos
  if (code > 0x10FFFF) this.raise(codePos, "Code point out of bounds")
} else {
  code = this.readHexChar(4)
}
return code

}

function codePointToString(code) {

// UTF-16 Decoding
if (code <= 0xFFFF) return String.fromCharCode(code)
code -= 0x10000
return String.fromCharCode((code >> 10) + 0xD800, (code & 1023) + 0xDC00)

}

pp$7.readString = function(quote) {

var this$1 = this;

var out = "", chunkStart = ++this.pos
for (;;) {
  if (this$1.pos >= this$1.input.length) this$1.raise(this$1.start, "Unterminated string constant")
  var ch = this$1.input.charCodeAt(this$1.pos)
  if (ch === quote) break
  if (ch === 92) { // '\'
    out += this$1.input.slice(chunkStart, this$1.pos)
    out += this$1.readEscapedChar(false)
    chunkStart = this$1.pos
  } else {
    if (isNewLine(ch)) this$1.raise(this$1.start, "Unterminated string constant")
    ++this$1.pos
  }
}
out += this.input.slice(chunkStart, this.pos++)
return this.finishToken(tt.string, out)

}

// Reads template string tokens.

pp$7.readTmplToken = function() {

var this$1 = this;

var out = "", chunkStart = this.pos
for (;;) {
  if (this$1.pos >= this$1.input.length) this$1.raise(this$1.start, "Unterminated template")
  var ch = this$1.input.charCodeAt(this$1.pos)
  if (ch === 96 || ch === 36 && this$1.input.charCodeAt(this$1.pos + 1) === 123) { // '`', '${'
    if (this$1.pos === this$1.start && this$1.type === tt.template) {
      if (ch === 36) {
        this$1.pos += 2
        return this$1.finishToken(tt.dollarBraceL)
      } else {
        ++this$1.pos
        return this$1.finishToken(tt.backQuote)
      }
    }
    out += this$1.input.slice(chunkStart, this$1.pos)
    return this$1.finishToken(tt.template, out)
  }
  if (ch === 92) { // '\'
    out += this$1.input.slice(chunkStart, this$1.pos)
    out += this$1.readEscapedChar(true)
    chunkStart = this$1.pos
  } else if (isNewLine(ch)) {
    out += this$1.input.slice(chunkStart, this$1.pos)
    ++this$1.pos
    switch (ch) {
      case 13:
        if (this$1.input.charCodeAt(this$1.pos) === 10) ++this$1.pos
      case 10:
        out += "\n"
        break
      default:
        out += String.fromCharCode(ch)
        break
    }
    if (this$1.options.locations) {
      ++this$1.curLine
      this$1.lineStart = this$1.pos
    }
    chunkStart = this$1.pos
  } else {
    ++this$1.pos
  }
}

}

// Used to read escaped characters

pp$7.readEscapedChar = function(inTemplate) {

var ch = this.input.charCodeAt(++this.pos)
++this.pos
switch (ch) {
case 110: return "\n" // 'n' -> '\n'
case 114: return "\r" // 'r' -> '\r'
case 120: return String.fromCharCode(this.readHexChar(2)) // 'x'
case 117: return codePointToString(this.readCodePoint()) // 'u'
case 116: return "\t" // 't' -> '\t'
case 98: return "\b" // 'b' -> '\b'
case 118: return "\u000b" // 'v' -> '\u000b'
case 102: return "\f" // 'f' -> '\f'
case 13: if (this.input.charCodeAt(this.pos) === 10) ++this.pos // '\r\n'
case 10: // ' \n'
  if (this.options.locations) { this.lineStart = this.pos; ++this.curLine }
  return ""
default:
  if (ch >= 48 && ch <= 55) {
    var octalStr = this.input.substr(this.pos - 1, 3).match(/^[0-7]+/)[0]
    var octal = parseInt(octalStr, 8)
    if (octal > 255) {
      octalStr = octalStr.slice(0, -1)
      octal = parseInt(octalStr, 8)
    }
    if (octalStr !== "0" && (this.strict || inTemplate)) {
      this.raise(this.pos - 2, "Octal literal in strict mode")
    }
    this.pos += octalStr.length - 1
    return String.fromCharCode(octal)
  }
  return String.fromCharCode(ch)
}

}

// Used to read character escape sequences ('x', 'u', 'U').

pp$7.readHexChar = function(len) {

var codePos = this.pos
var n = this.readInt(16, len)
if (n === null) this.raise(codePos, "Bad character escape sequence")
return n

}

// Read an identifier, and return it as a string. Sets `this.containsEsc` // to whether the word contained a 'u' escape. // // Incrementally adds only escaped chars, adding other chunks as-is // as a micro-optimization.

pp$7.readWord1 = function() {

var this$1 = this;

this.containsEsc = false
var word = "", first = true, chunkStart = this.pos
var astral = this.options.ecmaVersion >= 6
while (this.pos < this.input.length) {
  var ch = this$1.fullCharCodeAtPos()
  if (isIdentifierChar(ch, astral)) {
    this$1.pos += ch <= 0xffff ? 1 : 2
  } else if (ch === 92) { // "\"
    this$1.containsEsc = true
    word += this$1.input.slice(chunkStart, this$1.pos)
    var escStart = this$1.pos
    if (this$1.input.charCodeAt(++this$1.pos) != 117) // "u"
      this$1.raise(this$1.pos, "Expecting Unicode escape sequence \\uXXXX")
    ++this$1.pos
    var esc = this$1.readCodePoint()
    if (!(first ? isIdentifierStart : isIdentifierChar)(esc, astral))
      this$1.raise(escStart, "Invalid Unicode escape")
    word += codePointToString(esc)
    chunkStart = this$1.pos
  } else {
    break
  }
  first = false
}
return word + this.input.slice(chunkStart, this.pos)

}

// Read an identifier or keyword token. Will check for reserved // words when necessary.

pp$7.readWord = function() {

var word = this.readWord1()
var type = tt.name
if ((this.options.ecmaVersion >= 6 || !this.containsEsc) && this.keywords.test(word))
  type = keywordTypes[word]
return this.finishToken(type, word)

}

// Acorn is a tiny, fast JavaScript parser written in JavaScript. // // Acorn was written by Marijn Haverbeke, Ingvar Stepanyan, and // various contributors and released under an MIT license. // // Git repositories for Acorn are available at // // marijnhaverbeke.nl/git/acorn // github.com/ternjs/acorn.git // // Please use the [github bug tracker] to report issues. // // [ghbt]: github.com/ternjs/acorn/issues // // This file defines the main parser interface. The library also comes // with a [error-tolerant parser] and an // [abstract syntax tree walker], defined in other files. // // [dammit]: acorn_loose.js // [walk]: util/walk.js

// The main exported interface (under `self.acorn` when in the // browser) is a `parse` function that takes a code string and // returns an abstract syntax tree as specified by [Mozilla parser // API]. // // [api]: developer.mozilla.org/en-US/docs/SpiderMonkey/Parser_API

function parse(input, options) {

return new Parser(options, input).parse()

}

function getLocation ( source, charIndex ) {

var lines = source.split( '\n' );
var len = lines.length;

var lineStart = 0;
var i;

for ( i = 0; i < len; i += 1 ) {
        var line = lines[i];
        var lineEnd =  lineStart + line.length + 1; // +1 for newline

        if ( lineEnd > charIndex ) {
                return { line: i + 1, column: charIndex - lineStart };
        }

        lineStart = lineEnd;
}

throw new Error( 'Could not determine location of character' );

}

var reservedWords$1 = 'break case class catch const continue debugger default delete do else export extends finally for function if import in instanceof let new return super switch this throw try typeof var void while with yield enum await implements package protected static interface private public'.split( ' ' ); var builtins = 'Infinity NaN undefined null true false eval uneval isFinite isNaN parseFloat parseInt decodeURI decodeURIComponent encodeURI encodeURIComponent escape unescape Object Function Boolean Symbol Error EvalError InternalError RangeError ReferenceError SyntaxError TypeError URIError Number Math Date String RegExp Array Int8Array Uint8Array Uint8ClampedArray Int16Array Uint16Array Int32Array Uint32Array Float32Array Float64Array Map Set WeakMap WeakSet SIMD ArrayBuffer DataView JSON Promise Generator GeneratorFunction Reflect Proxy Intl'.split( ' ' );

var blacklisted = blank(); reservedWords$1.concat( builtins ).forEach( function (word) { return blacklisted[ word ] = true; } );

function makeLegalIdentifier ( str ) {

str = str
        .replace( /-(\w)/g, function ( _, letter ) { return letter.toUpperCase(); } )
        .replace( /[^$_a-zA-Z0-9]/g, '_' );

if ( /\d/.test( str[0] ) || blacklisted[ str ] ) str = "_" + str;

return str;

}

function relativeId ( id ) {

if ( typeof process === 'undefined' ) return id;
return id.replace( process.cwd(), '' ).replace( /^[\/\\]/, '' );

}

// properties are for debugging purposes only var ARRAY = { ARRAY: true, toString: function () { return '[[ARRAY]]'; } }; var NUMBER = { NUMBER: true, toString: function () { return '[[NUMBER]]'; } }; var OBJECT = { OBJECT: true, toString: function () { return '[[OBJECT]]'; } }; var STRING = { STRING: true, toString: function () { return '[[STRING]]'; } }; var UNKNOWN = { UNKNOWN: true, toString: function () { return '[[UNKNOWN]]'; } };

var SyntheticNamespaceDeclaration = function SyntheticNamespaceDeclaration ( module ) {

var this$1 = this;

this.isNamespace = true;
this.module = module;
this.name = module.basename();

this.needsNamespaceBlock = false;

this.originals = blank();
module.getExports().forEach( function (name) {
        this$1.originals[ name ] = module.traceExport( name );
});

};

SyntheticNamespaceDeclaration.prototype.activate = function activate () {

this.needsNamespaceBlock = true;

// add synthetic references, in case of chained
// namespace imports
forOwn( this.originals, function (original) {
        original.activate();
});

};

SyntheticNamespaceDeclaration.prototype.addReference = function addReference ( node ) {

this.name = node.name;

};

SyntheticNamespaceDeclaration.prototype.gatherPossibleValues = function gatherPossibleValues ( values ) {

values.add( UNKNOWN );

};

SyntheticNamespaceDeclaration.prototype.getName = function getName () {

return this.name;

};

SyntheticNamespaceDeclaration.prototype.renderBlock = function renderBlock ( es, legacy, indentString ) {

        var this$1 = this;

var members = keys( this.originals ).map( function (name) {
        var original = this$1.originals[ name ];

        if ( original.isReassigned ) {
                return (indentString + "get " + name + " () { return " + (original.getName( es )) + "; }");
        }

        return ("" + indentString + name + ": " + (original.getName( es )));
});

var callee = legacy ? "(Object.freeze || Object)" : "Object.freeze";
return ((this.module.bundle.varOrConst) + " " + (this.getName( es )) + " = " + callee + "({\n" + (members.join( ',\n' )) + "\n});\n\n");

};

var ExternalDeclaration = function ExternalDeclaration ( module, name ) {

this.module = module;
this.name = name;
this.safeName = null;
this.isExternal = true;

this.activated = true;

this.isNamespace = name === '*';

};

ExternalDeclaration.prototype.activate = function activate () {

// noop

};

ExternalDeclaration.prototype.addReference = function addReference ( reference ) {

reference.declaration = this;

if ( this.name === 'default' || this.name === '*' ) {
        this.module.suggestName( reference.name );
}

};

ExternalDeclaration.prototype.getName = function getName ( es ) {

if ( this.name === '*' ) {
        return this.module.name;
}

if ( this.name === 'default' ) {
        return this.module.exportsNamespace || ( !es && this.module.exportsNames ) ?
                ((this.module.name) + "__default") :
                this.module.name;
}

return es ? this.safeName : ((this.module.name) + "." + (this.name));

};

ExternalDeclaration.prototype.setSafeName = function setSafeName ( name ) {

this.safeName = name;

};

function extractNames ( param ) {

var names = [];
extractors[ param.type ]( names, param );
return names;

}

var extractors = {

Identifier: function Identifier ( names, param ) {
        names.push( param.name );
},

ObjectPattern: function ObjectPattern ( names, param ) {
        param.properties.forEach( function (prop) {
                extractors[ prop.value.type ]( names, prop.value );
        });
},

ArrayPattern: function ArrayPattern ( names, param ) {
        param.elements.forEach( function (element) {
                if ( element ) extractors[ element.type ]( names, element );
        });
},

RestElement: function RestElement ( names, param ) {
        extractors[ param.argument.type ]( names, param.argument );
},

AssignmentPattern: function AssignmentPattern ( names, param ) {
        extractors[ param.left.type ]( names, param.left );
}

};

var Node$1 = function Node () {};

Node$1.prototype.bind = function bind ( scope ) {

        var this$1 = this;

this.eachChild( function (child) { return child.bind( this$1.scope || scope ); } );

};

Node$1.prototype.eachChild = function eachChild ( callback ) {

        var this$1 = this;

for ( var key of this.keys ) {
        if ( this$1.shorthand && key === 'key' ) continue; // key and value are the same

        var value = this$1[ key ];

        if ( value ) {
                if ( 'length' in value ) {
                        for ( var child of value ) {
                                if ( child ) callback( child );
                        }
                } else if ( value ) {
                        callback( value );
                }
        }
}

};

Node$1.prototype.findParent = function findParent ( selector ) {

return selector.test( this.type ) ? this : this.parent.findParent( selector );

};

// TODO abolish findScope. if a node needs to store scope, store it Node$1.prototype.findScope = function findScope ( functionScope ) {

return this.parent.findScope( functionScope );

};

Node$1.prototype.gatherPossibleValues = function gatherPossibleValues ( values ) {

//this.eachChild( child => child.gatherPossibleValues( values ) );
values.add( UNKNOWN );

};

Node$1.prototype.getValue = function getValue () {

return UNKNOWN;

};

Node$1.prototype.hasEffects = function hasEffects ( scope ) {

        var this$1 = this;

if ( this.scope ) scope = this.scope;

for ( var key of this.keys ) {
        var value = this$1[ key ];

        if ( value ) {
                if ( 'length' in value ) {
                        for ( var child of value ) {
                                if ( child && child.hasEffects( scope ) ) {
                                        return true;
                                }
                        }
                } else if ( value && value.hasEffects( scope ) ) {
                        return true;
                }
        }
}

};

Node$1.prototype.initialise = function initialise ( scope ) {

        var this$1 = this;

this.eachChild( function (child) { return child.initialise( this$1.scope || scope ); } );

};

Node$1.prototype.insertSemicolon = function insertSemicolon ( code ) {

if ( code.original[ this.end - 1 ] !== ';' ) {
        code.insertLeft( this.end, ';' );
}

};

Node$1.prototype.locate = function locate () {

// useful for debugging
var location = getLocation( this.module.code, this.start );
location.file = this.module.id;
location.toString = function () { return JSON.stringify( location ); };

return location;

};

Node$1.prototype.render = function render ( code, es ) {

this.eachChild( function (child) { return child.render( code, es ); } );

};

Node$1.prototype.run = function run ( scope ) {

        var this$1 = this;

if ( this.ran ) return;
this.ran = true;

this.eachChild( function (child) {
        child.run( this$1.scope || scope );
});

};

Node$1.prototype.toString = function toString () {

return this.module.code.slice( this.start, this.end );

};

var ArrayExpression = (function (Node) {

function ArrayExpression () {
        Node.apply(this, arguments);
}

if ( Node ) ArrayExpression.__proto__ = Node;
ArrayExpression.prototype = Object.create( Node && Node.prototype );
ArrayExpression.prototype.constructor = ArrayExpression;

ArrayExpression.prototype.gatherPossibleValues = function gatherPossibleValues ( values ) {
        values.add( ARRAY );
};

return ArrayExpression;

}(Node$1));

var Parameter = function Parameter ( name ) {

this.name = name;

this.isParam = true;
this.activated = true;

};

Parameter.prototype.activate = function activate () {

// noop

};

Parameter.prototype.addReference = function addReference () {

// noop?

};

Parameter.prototype.gatherPossibleValues = function gatherPossibleValues ( values ) {

values.add( UNKNOWN ); // TODO populate this at call time

};

Parameter.prototype.getName = function getName () {

return this.name;

};

var Scope = function Scope ( options ) {

options = options || {};

this.parent = options.parent;
this.isBlockScope = !!options.isBlockScope;
this.isLexicalBoundary = !!options.isLexicalBoundary;
this.isModuleScope = !!options.isModuleScope;

this.children = [];
if ( this.parent ) this.parent.children.push( this );

this.declarations = blank();

if ( this.isLexicalBoundary && !this.isModuleScope ) {
        this.declarations.arguments = new Parameter( 'arguments' );
}

};

Scope.prototype.addDeclaration = function addDeclaration ( name, declaration, isVar, isParam ) {

if ( isVar && this.isBlockScope ) {
        this.parent.addDeclaration( name, declaration, isVar, isParam );
} else {
        var existingDeclaration = this.declarations[ name ];

        if ( existingDeclaration && existingDeclaration.duplicates ) {
                // TODO warn/throw on duplicates?
                existingDeclaration.duplicates.push( declaration );
        } else {
                this.declarations[ name ] = isParam ? new Parameter( name ) : declaration;
        }
}

};

Scope.prototype.contains = function contains ( name ) {

return !!this.declarations[ name ] ||
               ( this.parent ? this.parent.contains( name ) : false );

};

Scope.prototype.deshadow = function deshadow ( names ) {

        var this$1 = this;

keys( this.declarations ).forEach( function (key) {
        var declaration = this$1.declarations[ key ];

        // we can disregard exports.foo etc
        if ( declaration.exportName && declaration.isReassigned ) return;

        var name = declaration.getName( true );
        var deshadowed = name;

        var i = 1;

        while ( names.has( deshadowed ) ) {
                deshadowed = name + "$$" + (i++);
        }

        declaration.name = deshadowed;
});

this.children.forEach( function (scope) { return scope.deshadow( names ); } );

};

Scope.prototype.findDeclaration = function findDeclaration ( name ) {

return this.declarations[ name ] ||
               ( this.parent && this.parent.findDeclaration( name ) );

};

Scope.prototype.findLexicalBoundary = function findLexicalBoundary () {

return this.isLexicalBoundary ? this : this.parent.findLexicalBoundary();

};

var ArrowFunctionExpression = (function (Node) {

function ArrowFunctionExpression () {
        Node.apply(this, arguments);
}

if ( Node ) ArrowFunctionExpression.__proto__ = Node;
ArrowFunctionExpression.prototype = Object.create( Node && Node.prototype );
ArrowFunctionExpression.prototype.constructor = ArrowFunctionExpression;

ArrowFunctionExpression.prototype.bind = function bind ( scope ) {
        Node.prototype.bind.call( this, this.scope || scope );
};

ArrowFunctionExpression.prototype.findScope = function findScope ( functionScope ) {
        return this.scope || this.parent.findScope( functionScope );
};

ArrowFunctionExpression.prototype.hasEffects = function hasEffects () {
        return false;
};

ArrowFunctionExpression.prototype.initialise = function initialise ( scope ) {
        var this$1 = this;

        if ( this.body.type === 'BlockStatement' ) {
                this.body.createScope( scope );
                this.scope = this.body.scope;
        } else {
                this.scope = new Scope({
                        parent: scope,
                        isBlockScope: false,
                        isLexicalBoundary: false
                });

                for ( var param of this.params ) {
                        for ( var name of extractNames( param ) ) {
                                this$1.scope.addDeclaration( name, null, null, true ); // TODO ugh
                        }
                }
        }

        Node.prototype.initialise.call( this, this.scope );
};

return ArrowFunctionExpression;

}(Node$1));

function error ( props ) {

var err = new Error( props.message );

Object.keys( props ).forEach( function (key) {
        err[ key ] = props[ key ];
});

throw err;

}

// TODO tidy this up a bit (e.g. they can both use node.module.imports) function disallowIllegalReassignment ( scope, node ) {

if ( node.type === 'MemberExpression' && node.object.type === 'Identifier' ) {
        var declaration = scope.findDeclaration( node.object.name );
        if ( declaration.isNamespace ) {
                error({
                        message: ("Illegal reassignment to import '" + (node.object.name) + "'"),
                        file: node.module.id,
                        pos: node.start,
                        loc: getLocation( node.module.code, node.start )
                });
        }
}

else if ( node.type === 'Identifier' ) {
        if ( node.module.imports[ node.name ] && !scope.contains( node.name ) ) {
                error({
                        message: ("Illegal reassignment to import '" + (node.name) + "'"),
                        file: node.module.id,
                        pos: node.start,
                        loc: getLocation( node.module.code, node.start )
                });
        }
}

}

function isUsedByBundle ( scope, node ) {

while ( node.type === 'ParenthesizedExpression' ) node = node.expression;

// const expression = node;
while ( node.type === 'MemberExpression' ) node = node.object;

var declaration = scope.findDeclaration( node.name );

if ( declaration.isParam ) {
        return true;

        // TODO if we mutate a parameter, assume the worst
        // return node !== expression;
}

if ( declaration.activated ) return true;

var values = new Set();
declaration.gatherPossibleValues( values );
for ( var value of values ) {
        if ( value === UNKNOWN ) {
                return true;
        }

        if ( value.type === 'Identifier' ) {
                if ( value.declaration.activated ) {
                        return true;
                }
                value.declaration.gatherPossibleValues( values );
        }

        else if ( value.gatherPossibleValues ) {
                value.gatherPossibleValues( values );
        }
}

return false;

}

var AssignmentExpression = (function (Node) {

function AssignmentExpression () {
        Node.apply(this, arguments);
}

if ( Node ) AssignmentExpression.__proto__ = Node;
AssignmentExpression.prototype = Object.create( Node && Node.prototype );
AssignmentExpression.prototype.constructor = AssignmentExpression;

AssignmentExpression.prototype.bind = function bind ( scope ) {
        var subject = this.left;
        while ( this.left.type === 'ParenthesizedExpression' ) subject = subject.expression;

        this.subject = subject;
        disallowIllegalReassignment( scope, subject );

        if ( subject.type === 'Identifier' ) {
                var declaration = scope.findDeclaration( subject.name );
                declaration.isReassigned = true;

                if ( declaration.possibleValues ) { // TODO this feels hacky
                        if ( this.operator === '=' ) {
                                declaration.possibleValues.add( this.right );
                        } else if ( this.operator === '+=' ) {
                                declaration.possibleValues.add( STRING ).add( NUMBER );
                        } else {
                                declaration.possibleValues.add( NUMBER );
                        }
                }
        }

        Node.prototype.bind.call( this, scope );
};

AssignmentExpression.prototype.hasEffects = function hasEffects ( scope ) {
        var hasEffects = this.isUsedByBundle() || this.right.hasEffects( scope );
        return hasEffects;
};

AssignmentExpression.prototype.initialise = function initialise ( scope ) {
        this.scope = scope;

        this.module.bundle.dependentExpressions.push( this );
        Node.prototype.initialise.call( this, scope );
};

AssignmentExpression.prototype.isUsedByBundle = function isUsedByBundle$1 () {
        return isUsedByBundle( this.scope, this.subject );
};

return AssignmentExpression;

}(Node$1));

var operators = {

'==': function ( left, right ) { return left == right; },
'!=': function ( left, right ) { return left != right; },
'===': function ( left, right ) { return left === right; },
'!==': function ( left, right ) { return left !== right; },
'<': function ( left, right ) { return left < right; },
'<=': function ( left, right ) { return left <= right; },
'>': function ( left, right ) { return left > right; },
'>=': function ( left, right ) { return left >= right; },
'<<': function ( left, right ) { return left << right; },
'>>': function ( left, right ) { return left >> right; },
'>>>': function ( left, right ) { return left >>> right; },
'+': function ( left, right ) { return left + right; },
'-': function ( left, right ) { return left - right; },
'*': function ( left, right ) { return left * right; },
'/': function ( left, right ) { return left / right; },
'%': function ( left, right ) { return left % right; },
'|': function ( left, right ) { return left | right; },
'^': function ( left, right ) { return left ^ right; },
'&': function ( left, right ) { return left & right; },
in: function ( left, right ) { return left in right; },
instanceof: function ( left, right ) { return left instanceof right; }

};

var BinaryExpression = (function (Node) {

function BinaryExpression () {
        Node.apply(this, arguments);
}

if ( Node ) BinaryExpression.__proto__ = Node;
BinaryExpression.prototype = Object.create( Node && Node.prototype );
BinaryExpression.prototype.constructor = BinaryExpression;

BinaryExpression.prototype.getValue = function getValue () {
        var leftValue = this.left.getValue();
        if ( leftValue === UNKNOWN ) return UNKNOWN;

        var rightValue = this.right.getValue();
        if ( rightValue === UNKNOWN ) return UNKNOWN;

        return operators[ this.operator ]( leftValue, rightValue );
};

return BinaryExpression;

}(Node$1));

var Statement = (function (Node) {

function Statement () {
        Node.apply(this, arguments);
}

if ( Node ) Statement.__proto__ = Node;
Statement.prototype = Object.create( Node && Node.prototype );
Statement.prototype.constructor = Statement;

Statement.prototype.render = function render ( code, es ) {
        if ( !this.module.bundle.treeshake || this.shouldInclude ) {
                Node.prototype.render.call( this, code, es );
        } else {
                code.remove( this.leadingCommentStart || this.start, this.next || this.end );
        }
};

Statement.prototype.run = function run ( scope ) {
        this.shouldInclude = true;
        Node.prototype.run.call( this, scope );
};

return Statement;

}(Node$1));

var BlockStatement = (function (Statement) {

function BlockStatement () {
        Statement.apply(this, arguments);
}

if ( Statement ) BlockStatement.__proto__ = Statement;
BlockStatement.prototype = Object.create( Statement && Statement.prototype );
BlockStatement.prototype.constructor = BlockStatement;

BlockStatement.prototype.bind = function bind () {
        var this$1 = this;

        for ( var node of this.body ) {
                node.bind( this$1.scope );
        }
};

BlockStatement.prototype.createScope = function createScope ( parent ) {
        var this$1 = this;

        this.parentIsFunction = /Function/.test( this.parent.type );
        this.isFunctionBlock = this.parentIsFunction || this.parent.type === 'Module';

        this.scope = new Scope({
                parent: parent,
                isBlockScope: !this.isFunctionBlock,
                isLexicalBoundary: this.isFunctionBlock && this.parent.type !== 'ArrowFunctionExpression',
                owner: this // TODO is this used anywhere?
        });

        var params = this.parent.params || ( this.parent.type === 'CatchClause' && [ this.parent.param ] );

        if ( params && params.length ) {
                params.forEach( function (node) {
                        extractNames( node ).forEach( function (name) {
                                this$1.scope.addDeclaration( name, node, false, true );
                        });
                });
        }
};

BlockStatement.prototype.findScope = function findScope ( functionScope ) {
        return functionScope && !this.isFunctionBlock ? this.parent.findScope( functionScope ) : this.scope;
};

BlockStatement.prototype.initialise = function initialise ( scope ) {
        var this$1 = this;

        if ( !this.scope ) this.createScope( scope ); // scope can be created early in some cases, e.g for (let i... )

        var lastNode;
        for ( var node of this.body ) {
                node.initialise( this$1.scope );

                if ( lastNode ) lastNode.next = node.start;
                lastNode = node;
        }
};

BlockStatement.prototype.render = function render ( code, es ) {
        if (this.body.length) {
                for ( var node of this.body ) {
                        node.render( code, es );
                }
        } else {
                Statement.prototype.render.call(this, code, es);
        }
};

return BlockStatement;

}(Statement));

function flatten ( node ) {

var parts = [];
while ( node.type === 'MemberExpression' ) {
        if ( node.computed ) return null;
        parts.unshift( node.property.name );

        node = node.object;
}

if ( node.type !== 'Identifier' ) return null;

var name = node.name;
parts.unshift( name );

return { name: name, keypath: parts.join( '.' ) };

}

function isReference ( node, parent ) {

if ( node.type === 'MemberExpression' ) {
        return !node.computed && isReference( node.object, node );
}

if ( node.type === 'Identifier' ) {
        // the only time we could have an identifier node without a parent is
        // if it's the entire body of a function without a block statement –
        // i.e. an arrow function expression like `a => a`
        if ( !parent ) return true;

        // TODO is this right?
        if ( parent.type === 'MemberExpression' || parent.type === 'MethodDefinition' ) {
                return parent.computed || node === parent.object;
        }

        // disregard the `bar` in `{ bar: foo }`, but keep it in `{ [bar]: foo }`
        if ( parent.type === 'Property' ) return parent.computed || node === parent.value;

        // disregard the `bar` in `class Foo { bar () {...} }`
        if ( parent.type === 'MethodDefinition' ) return false;

        // disregard the `bar` in `export { foo as bar }`
        if ( parent.type === 'ExportSpecifier' && node !== parent.local ) return;

        return true;
}

}

var pureFunctions = {};

var arrayTypes = 'Array Int8Array Uint8Array Uint8ClampedArray Int16Array Uint16Array Int32Array Uint32Array Float32Array Float64Array'.split( ' ' ); var simdTypes = 'Int8x16 Int16x8 Int32x4 Float32x4 Float64x2'.split( ' ' ); var simdMethods = 'abs add and bool check div equal extractLane fromFloat32x4 fromFloat32x4Bits fromFloat64x2 fromFloat64x2Bits fromInt16x8Bits fromInt32x4 fromInt32x4Bits fromInt8x16Bits greaterThan greaterThanOrEqual lessThan lessThanOrEqual load max maxNum min minNum mul neg not notEqual or reciprocalApproximation reciprocalSqrtApproximation replaceLane select selectBits shiftLeftByScalar shiftRightArithmeticByScalar shiftRightLogicalByScalar shuffle splat sqrt store sub swizzle xor'.split( ' ' ); var allSimdMethods = []; simdTypes.forEach( function (t) {

simdMethods.forEach( function (m) {
        allSimdMethods.push( ("SIMD." + t + "." + m) );
});

});

[

'Array.isArray',
'Error', 'EvalError', 'InternalError', 'RangeError', 'ReferenceError', 'SyntaxError', 'TypeError', 'URIError',
'isFinite', 'isNaN', 'parseFloat', 'parseInt', 'decodeURI', 'decodeURIComponent', 'encodeURI', 'encodeURIComponent', 'escape', 'unescape',
'Object', 'Object.create', 'Object.getNotifier', 'Object.getOwn', 'Object.getOwnPropertyDescriptor', 'Object.getOwnPropertyNames', 'Object.getOwnPropertySymbols', 'Object.getPrototypeOf', 'Object.is', 'Object.isExtensible', 'Object.isFrozen', 'Object.isSealed', 'Object.keys',
'Function', 'Boolean',
'Number', 'Number.isFinite', 'Number.isInteger', 'Number.isNaN', 'Number.isSafeInteger', 'Number.parseFloat', 'Number.parseInt',
'Symbol', 'Symbol.for', 'Symbol.keyFor',
'Math.abs', 'Math.acos', 'Math.acosh', 'Math.asin', 'Math.asinh', 'Math.atan', 'Math.atan2', 'Math.atanh', 'Math.cbrt', 'Math.ceil', 'Math.clz32', 'Math.cos', 'Math.cosh', 'Math.exp', 'Math.expm1', 'Math.floor', 'Math.fround', 'Math.hypot', 'Math.imul', 'Math.log', 'Math.log10', 'Math.log1p', 'Math.log2', 'Math.max', 'Math.min', 'Math.pow', 'Math.random', 'Math.round', 'Math.sign', 'Math.sin', 'Math.sinh', 'Math.sqrt', 'Math.tan', 'Math.tanh', 'Math.trunc',
'Date', 'Date.UTC', 'Date.now', 'Date.parse',
'String', 'String.fromCharCode', 'String.fromCodePoint', 'String.raw',
'RegExp',
'Map', 'Set', 'WeakMap', 'WeakSet',
'ArrayBuffer', 'ArrayBuffer.isView',
'DataView',
'JSON.parse', 'JSON.stringify',
'Promise', 'Promise.all', 'Promise.race', 'Promise.reject', 'Promise.resolve',
'Intl.Collator', 'Intl.Collator.supportedLocalesOf', 'Intl.DateTimeFormat', 'Intl.DateTimeFormat.supportedLocalesOf', 'Intl.NumberFormat', 'Intl.NumberFormat.supportedLocalesOf'

// TODO properties of e.g. window...

].concat(

arrayTypes,
arrayTypes.map( function (t) { return (t + ".from"); } ),
arrayTypes.map( function (t) { return (t + ".of"); } ),
simdTypes.map( function (t) { return ("SIMD." + t); } ),
allSimdMethods

).forEach( function (name) { return pureFunctions[ name ] = true; } );

var currentlyCalling = new Set();

function fnHasEffects ( fn ) {

if ( currentlyCalling.has( fn ) ) return false; // prevent infinite loops... TODO there must be a better way
currentlyCalling.add( fn );

// handle body-less arrow functions
var scope = fn.body.scope || fn.scope;
var body = fn.body.body || [ fn.body ];

for ( var node of body ) {
        if ( node.hasEffects( scope ) ) {
                currentlyCalling.delete( fn );
                return true;
        }
}

currentlyCalling.delete( fn );
return false;

}

function callHasEffects ( scope, callee ) {

var values = new Set([ callee ]);

for ( var node of values ) {
        if ( node === UNKNOWN ) return true; // err on side of caution

        if ( /Function/.test( node.type ) ) {
                if ( fnHasEffects( node ) ) return true;
        }

        else if ( isReference( node ) ) {
                var flattened = flatten( node );
                var declaration = scope.findDeclaration( flattened.name );

                if ( declaration.isGlobal ) {
                        if ( !pureFunctions[ flattened.keypath ] ) return true;
                }

                else if ( declaration.isExternal ) {
                        return true; // TODO make this configurable? e.g. `path.[whatever]`
                }

                else {
                        if ( node.declaration ) {
                                node.declaration.gatherPossibleValues( values );
                        } else {
                                return true;
                        }
                }
        }

        else {
                if ( !node.gatherPossibleValues ) {
                        throw new Error( 'TODO' );
                }
                node.gatherPossibleValues( values );
        }
}

return false;

}

var CallExpression = (function (Node) {

function CallExpression () {
        Node.apply(this, arguments);
}

if ( Node ) CallExpression.__proto__ = Node;
CallExpression.prototype = Object.create( Node && Node.prototype );
CallExpression.prototype.constructor = CallExpression;

CallExpression.prototype.bind = function bind ( scope ) {
        if ( this.callee.type === 'Identifier' ) {
                var declaration = scope.findDeclaration( this.callee.name );

                if ( declaration.isNamespace ) {
                        error({
                                message: ("Cannot call a namespace ('" + (this.callee.name) + "')"),
                                file: this.module.id,
                                pos: this.start,
                                loc: getLocation( this.module.code, this.start )
                        });
                }

                if ( this.callee.name === 'eval' && declaration.isGlobal ) {
                        this.module.bundle.onwarn( ("Use of `eval` (in " + (this.module.id) + ") is strongly discouraged, as it poses security risks and may cause issues with minification. See https://github.com/rollup/rollup/wiki/Troubleshooting#avoiding-eval for more details") );
                }
        }

        Node.prototype.bind.call( this, scope );
};

CallExpression.prototype.hasEffects = function hasEffects ( scope ) {
        return callHasEffects( scope, this.callee );
};

CallExpression.prototype.initialise = function initialise ( scope ) {
        this.module.bundle.dependentExpressions.push( this );
        Node.prototype.initialise.call( this, scope );
};

CallExpression.prototype.isUsedByBundle = function isUsedByBundle () {
        return this.hasEffects( this.findScope() );
};

return CallExpression;

}(Node$1));

// TODO is this basically identical to FunctionDeclaration? var ClassDeclaration = (function (Node) {

function ClassDeclaration () {
        Node.apply(this, arguments);
}

if ( Node ) ClassDeclaration.__proto__ = Node;
ClassDeclaration.prototype = Object.create( Node && Node.prototype );
ClassDeclaration.prototype.constructor = ClassDeclaration;

ClassDeclaration.prototype.activate = function activate () {
        if ( this.activated ) return;
        this.activated = true;

        if ( this.superClass ) this.superClass.run( this.scope );
        this.body.run();
};

ClassDeclaration.prototype.addReference = function addReference () {
        /* noop? */
};

ClassDeclaration.prototype.gatherPossibleValues = function gatherPossibleValues ( values ) {
        values.add( this );
};

ClassDeclaration.prototype.getName = function getName () {
        return this.name;
};

ClassDeclaration.prototype.hasEffects = function hasEffects () {
        return false;
};

ClassDeclaration.prototype.initialise = function initialise ( scope ) {
        this.scope = scope;

        this.name = this.id.name;

        scope.addDeclaration( this.name, this, false, false );
        Node.prototype.initialise.call( this, scope );
};

ClassDeclaration.prototype.render = function render ( code, es ) {
        if ( this.activated ) {
                Node.prototype.render.call( this, code, es );
        } else {
                code.remove( this.leadingCommentStart || this.start, this.next || this.end );
        }
};

return ClassDeclaration;

}(Node$1));

var ClassExpression = (function (Node) {

function ClassExpression () {
        Node.apply(this, arguments);
}

if ( Node ) ClassExpression.__proto__ = Node;
ClassExpression.prototype = Object.create( Node && Node.prototype );
ClassExpression.prototype.constructor = ClassExpression;

ClassExpression.prototype.bind = function bind () {
        Node.prototype.bind.call( this, this.scope );
};

ClassExpression.prototype.findScope = function findScope () {
        return this.scope;
};

ClassExpression.prototype.initialise = function initialise () {
        this.scope = new Scope({
                isBlockScope: true,
                parent: this.parent.findScope( false )
        });

        if ( this.id ) {
                // function expression IDs belong to the child scope...
                this.scope.addDeclaration( this.id.name, this, false, true );
        }

        Node.prototype.initialise.call( this, this.scope );
};

return ClassExpression;

}(Node$1));

var ConditionalExpression = (function (Node) {

function ConditionalExpression () {
        Node.apply(this, arguments);
}

if ( Node ) ConditionalExpression.__proto__ = Node;
ConditionalExpression.prototype = Object.create( Node && Node.prototype );
ConditionalExpression.prototype.constructor = ConditionalExpression;

ConditionalExpression.prototype.initialise = function initialise ( scope ) {
        if ( this.module.bundle.treeshake ) {
                this.testValue = this.test.getValue();

                if ( this.testValue === UNKNOWN  ) {
                        Node.prototype.initialise.call( this, scope );
                }

                else if ( this.testValue ) {
                        this.consequent.initialise( scope );
                        this.alternate = null;
                } else if ( this.alternate ) {
                        this.alternate.initialise( scope );
                        this.consequent = null;
                }
        }

        else {
                Node.prototype.initialise.call( this, scope );
        }
};

ConditionalExpression.prototype.gatherPossibleValues = function gatherPossibleValues ( values ) {
        var testValue = this.test.getValue();

        if ( testValue === UNKNOWN ) {
                values.add( this.consequent ).add( this.alternate );
        } else {
                values.add( testValue ? this.consequent : this.alternate );
        }
};

ConditionalExpression.prototype.getValue = function getValue () {
        var testValue = this.test.getValue();
        if ( testValue === UNKNOWN ) return UNKNOWN;

        return testValue ? this.consequent.getValue() : this.alternate.getValue();
};

ConditionalExpression.prototype.render = function render ( code, es ) {
        if ( !this.module.bundle.treeshake ) {
                Node.prototype.render.call( this, code, es );
        }

        else {
                if ( this.testValue === UNKNOWN ) {
                        Node.prototype.render.call( this, code, es );
                }

                else if ( this.testValue ) {
                        code.remove( this.start, this.consequent.start );
                        code.remove( this.consequent.end, this.end );
                        this.consequent.render( code, es );
                } else {
                        code.remove( this.start, this.alternate.start );
                        code.remove( this.alternate.end, this.end );
                        this.alternate.render( code, es );
                }
        }
};

return ConditionalExpression;

}(Node$1));

var EmptyStatement = (function (Statement) {

function EmptyStatement () {
        Statement.apply(this, arguments);
}

if ( Statement ) EmptyStatement.__proto__ = Statement;
EmptyStatement.prototype = Object.create( Statement && Statement.prototype );
EmptyStatement.prototype.constructor = EmptyStatement;

EmptyStatement.prototype.render = function render ( code ) {
        if ( this.parent.type === 'BlockStatement' || this.parent.type === 'Program' ) {
                code.remove( this.start, this.end );
        }
};

return EmptyStatement;

}(Statement));

var ExportAllDeclaration = (function (Node) {

function ExportAllDeclaration () {
        Node.apply(this, arguments);
}

if ( Node ) ExportAllDeclaration.__proto__ = Node;
ExportAllDeclaration.prototype = Object.create( Node && Node.prototype );
ExportAllDeclaration.prototype.constructor = ExportAllDeclaration;

ExportAllDeclaration.prototype.initialise = function initialise () {
        this.isExportDeclaration = true;
};

ExportAllDeclaration.prototype.render = function render ( code ) {
        code.remove( this.leadingCommentStart || this.start, this.next || this.end );
};

return ExportAllDeclaration;

}(Node$1));

var functionOrClassDeclaration = /^(?:Function|Class)Declaration/;

var ExportDefaultDeclaration = (function (Node) {

function ExportDefaultDeclaration () {
        Node.apply(this, arguments);
}

if ( Node ) ExportDefaultDeclaration.__proto__ = Node;
ExportDefaultDeclaration.prototype = Object.create( Node && Node.prototype );
ExportDefaultDeclaration.prototype.constructor = ExportDefaultDeclaration;

ExportDefaultDeclaration.prototype.initialise = function initialise ( scope ) {
        this.isExportDeclaration = true;
        this.isDefault = true;

        this.name = ( this.declaration.id && this.declaration.id.name ) || this.declaration.name || this.module.basename();
        scope.declarations.default = this;

        this.declaration.initialise( scope );
};

ExportDefaultDeclaration.prototype.activate = function activate () {
        if ( this.activated ) return;
        this.activated = true;

        this.run();
};

ExportDefaultDeclaration.prototype.addReference = function addReference ( reference ) {
        this.name = reference.name;
        if ( this.original ) this.original.addReference( reference );
};

ExportDefaultDeclaration.prototype.bind = function bind ( scope ) {
        var name = ( this.declaration.id && this.declaration.id.name ) || this.declaration.name;
        if ( name ) this.original = scope.findDeclaration( name );

        this.declaration.bind( scope );
};

ExportDefaultDeclaration.prototype.gatherPossibleValues = function gatherPossibleValues ( values ) {
        this.declaration.gatherPossibleValues( values );
};

ExportDefaultDeclaration.prototype.getName = function getName ( es ) {
        if ( this.original && !this.original.isReassigned ) {
                return this.original.getName( es );
        }

        return this.name;
};

// TODO this is total chaos, tidy it up
ExportDefaultDeclaration.prototype.render = function render ( code, es ) {
        var treeshake = this.module.bundle.treeshake;
        var name = this.getName( es );

        if ( this.shouldInclude || this.declaration.activated ) {
                if ( this.activated ) {
                        if ( functionOrClassDeclaration.test( this.declaration.type ) ) {
                                if ( this.declaration.id ) {
                                        code.remove( this.start, this.declaration.start );
                                } else {
                                        throw new Error( 'TODO anonymous class/function declaration' );
                                }
                        }

                        else {
                                if ( this.original && this.original.getName( es ) === name ) {
                                        // prevent `var foo = foo`
                                        code.remove( this.leadingCommentStart || this.start, this.next || this.end );
                                        return; // don't render children. TODO this seems like a bit of a hack
                                } else {
                                        code.overwrite( this.start, this.declaration.start, ((this.module.bundle.varOrConst) + " " + name + " = ") );
                                }

                                this.insertSemicolon( code );
                        }
                } else {
                        // remove `var foo` from `var foo = bar()`, if `foo` is unused
                        code.remove( this.start, this.declaration.start );
                }

                Node.prototype.render.call( this, code, es );
        } else {
                if ( treeshake ) {
                        if ( functionOrClassDeclaration.test( this.declaration.type ) ) {
                                code.remove( this.leadingCommentStart || this.start, this.next || this.end );
                        } else {
                                var hasEffects = this.declaration.hasEffects( this.module.scope );
                                code.remove( this.start, hasEffects ? this.declaration.start : this.next || this.end );
                        }
                } else {
                        code.overwrite( this.start, this.declaration.start, ((this.module.bundle.varOrConst) + " " + name + " = ") );
                }
                // code.remove( this.start, this.next || this.end );
        }
};

ExportDefaultDeclaration.prototype.run = function run ( scope ) {
        this.shouldInclude = true;
        Node.prototype.run.call( this, scope );
};

return ExportDefaultDeclaration;

}(Node$1));

var UnboundDefaultExport = function UnboundDefaultExport ( original ) {

this.original = original;
this.name = original.name;

};

UnboundDefaultExport.prototype.activate = function activate () {

if ( this.activated ) return;
this.activated = true;

this.original.activate();

};

UnboundDefaultExport.prototype.addReference = function addReference ( reference ) {

this.name = reference.name;
this.original.addReference( reference );

};

UnboundDefaultExport.prototype.bind = function bind ( scope ) {

this.original.bind( scope );

};

UnboundDefaultExport.prototype.gatherPossibleValues = function gatherPossibleValues ( values ) {

this.original.gatherPossibleValues( values );

};

UnboundDefaultExport.prototype.getName = function getName ( es ) {

if ( this.original && !this.original.isReassigned ) {
        return this.original.getName( es );
}

return this.name;

};

var ExportNamedDeclaration = (function (Node) {

function ExportNamedDeclaration () {
        Node.apply(this, arguments);
}

if ( Node ) ExportNamedDeclaration.__proto__ = Node;
ExportNamedDeclaration.prototype = Object.create( Node && Node.prototype );
ExportNamedDeclaration.prototype.constructor = ExportNamedDeclaration;

ExportNamedDeclaration.prototype.initialise = function initialise ( scope ) {
        this.scope = scope;
        this.isExportDeclaration = true;

        // special case – `export { foo as default }` should not create a live binding
        var defaultExport = find( this.specifiers, function (specifier) { return specifier.exported.name === 'default'; } );
        if ( defaultExport ) {
                var declaration = this.scope.findDeclaration( defaultExport.local.name );
                this.defaultExport = new UnboundDefaultExport( declaration );
                scope.declarations.default = this.defaultExport;
        }

        if ( this.declaration ) this.declaration.initialise( scope );
};

ExportNamedDeclaration.prototype.bind = function bind ( scope ) {
        if ( this.declaration ) this.declaration.bind( scope );
};

ExportNamedDeclaration.prototype.render = function render ( code, es ) {
        if ( this.declaration ) {
                code.remove( this.start, this.declaration.start );
                this.declaration.render( code, es );
        } else {
                var start = this.leadingCommentStart || this.start;
                var end = this.next || this.end;

                if ( this.defaultExport ) {
                        var name = this.defaultExport.getName( es );
                        var originalName = this.defaultExport.original.getName( es );

                        if ( name !== originalName ) {
                                code.overwrite( start, end, ("var " + name + " = " + originalName + ";") );
                                return;
                        }
                }

                code.remove( start, end );
        }
};

return ExportNamedDeclaration;

}(Node$1));

var ExpressionStatement = (function (Statement) {

function ExpressionStatement () {
        Statement.apply(this, arguments);
}

if ( Statement ) ExpressionStatement.__proto__ = Statement;
ExpressionStatement.prototype = Object.create( Statement && Statement.prototype );
ExpressionStatement.prototype.constructor = ExpressionStatement;

ExpressionStatement.prototype.render = function render ( code, es ) {
        Statement.prototype.render.call( this, code, es );
        if ( this.shouldInclude ) this.insertSemicolon( code );
};

return ExpressionStatement;

}(Statement));

var ForStatement = (function (Statement) {

function ForStatement () {
        Statement.apply(this, arguments);
}

if ( Statement ) ForStatement.__proto__ = Statement;
ForStatement.prototype = Object.create( Statement && Statement.prototype );
ForStatement.prototype.constructor = ForStatement;

ForStatement.prototype.initialise = function initialise ( scope ) {
        if ( this.body.type === 'BlockStatement' ) {
                this.body.createScope( scope );
                this.scope = this.body.scope;
        } else {
                this.scope = new Scope({
                        parent: scope,
                        isBlockScope: true,
                        isLexicalBoundary: false
                });
        }

        // can't use super, because we need to control the order
        if ( this.init ) this.init.initialise( this.scope );
        if ( this.test ) this.test.initialise( this.scope );
        if ( this.update ) this.update.initialise( this.scope );
        this.body.initialise( this.scope );
};

return ForStatement;

}(Statement));

function assignToForLoopLeft ( node, scope, value ) {

if ( node.type === 'VariableDeclaration' ) {
        for ( var proxy of node.declarations[0].proxies.values() ) {
                proxy.possibleValues.add( value );
        }
}

else {
        while ( node.type === 'ParenthesizedExpression' ) node = node.expression;

        if ( node.type === 'MemberExpression' ) {
                // apparently this is legal JavaScript? Though I don't know what
                // kind of monster would write `for ( foo.bar of thing ) {...}`

                // for now, do nothing, as I'm not sure anything needs to happen...
        }

        else {
                for ( var name of extractNames( node ) ) {
                        var declaration = scope.findDeclaration( name );
                        if ( declaration.possibleValues ) {
                                declaration.possibleValues.add( value );
                        }
                }
        }
}

}

var ForInStatement = (function (Statement) {

function ForInStatement () {
        Statement.apply(this, arguments);
}

if ( Statement ) ForInStatement.__proto__ = Statement;
ForInStatement.prototype = Object.create( Statement && Statement.prototype );
ForInStatement.prototype.constructor = ForInStatement;

ForInStatement.prototype.initialise = function initialise ( scope ) {
        if ( this.body.type === 'BlockStatement' ) {
                this.body.createScope( scope );
                this.scope = this.body.scope;
        } else {
                this.scope = new Scope({
                        parent: scope,
                        isBlockScope: true,
                        isLexicalBoundary: false
                });
        }

        Statement.prototype.initialise.call( this, this.scope );
        assignToForLoopLeft( this.left, this.scope, STRING );
};

return ForInStatement;

}(Statement));

var ForOfStatement = (function (Statement) {

function ForOfStatement () {
        Statement.apply(this, arguments);
}

if ( Statement ) ForOfStatement.__proto__ = Statement;
ForOfStatement.prototype = Object.create( Statement && Statement.prototype );
ForOfStatement.prototype.constructor = ForOfStatement;

ForOfStatement.prototype.initialise = function initialise ( scope ) {
        if ( this.body.type === 'BlockStatement' ) {
                this.body.createScope( scope );
                this.scope = this.body.scope;
        } else {
                this.scope = new Scope({
                        parent: scope,
                        isBlockScope: true,
                        isLexicalBoundary: false
                });
        }

        Statement.prototype.initialise.call( this, this.scope );
        assignToForLoopLeft( this.left, this.scope, UNKNOWN );
};

return ForOfStatement;

}(Statement));

var FunctionDeclaration = (function (Node) {

function FunctionDeclaration () {
        Node.apply(this, arguments);
}

if ( Node ) FunctionDeclaration.__proto__ = Node;
FunctionDeclaration.prototype = Object.create( Node && Node.prototype );
FunctionDeclaration.prototype.constructor = FunctionDeclaration;

FunctionDeclaration.prototype.activate = function activate () {
        if ( this.activated ) return;
        this.activated = true;

        var scope = this.body.scope;
        this.params.forEach( function (param) { return param.run( scope ); } ); // in case of assignment patterns
        this.body.run();
};

FunctionDeclaration.prototype.addReference = function addReference () {
        /* noop? */
};

FunctionDeclaration.prototype.bind = function bind ( scope ) {
        var this$1 = this;

        this.id.bind( scope );
        this.params.forEach( function (param) { return param.bind( this$1.body.scope ); } );
        this.body.bind( scope );
};

FunctionDeclaration.prototype.gatherPossibleValues = function gatherPossibleValues ( values ) {
        values.add( this );
};

FunctionDeclaration.prototype.getName = function getName () {
        return this.name;
};

FunctionDeclaration.prototype.hasEffects = function hasEffects () {
        return false;
};

FunctionDeclaration.prototype.initialise = function initialise ( scope ) {
        var this$1 = this;

        this.name = this.id.name; // may be overridden by bundle.deconflict
        scope.addDeclaration( this.name, this, false, false );

        this.body.createScope( scope );

        this.id.initialise( scope );
        this.params.forEach( function (param) { return param.initialise( this$1.body.scope ); } );
        this.body.initialise();
};

FunctionDeclaration.prototype.render = function render ( code, es ) {
        if ( !this.module.bundle.treeshake || this.activated ) {
                Node.prototype.render.call( this, code, es );
        } else {
                code.remove( this.leadingCommentStart || this.start, this.next || this.end );
        }
};

return FunctionDeclaration;

}(Node$1));

var FunctionExpression = (function (Node) {

function FunctionExpression () {
        Node.apply(this, arguments);
}

if ( Node ) FunctionExpression.__proto__ = Node;
FunctionExpression.prototype = Object.create( Node && Node.prototype );
FunctionExpression.prototype.constructor = FunctionExpression;

FunctionExpression.prototype.bind = function bind () {
        var this$1 = this;

        if ( this.id ) this.id.bind( this.body.scope );
        this.params.forEach( function (param) { return param.bind( this$1.body.scope ); } );
        this.body.bind();
};

FunctionExpression.prototype.hasEffects = function hasEffects () {
        return false;
};

FunctionExpression.prototype.initialise = function initialise ( scope ) {
        var this$1 = this;

        this.body.createScope( scope );

        if ( this.id ) this.id.initialise( this.body.scope );
        this.params.forEach( function (param) { return param.initialise( this$1.body.scope ); } );
        this.body.initialise();
};

return FunctionExpression;

}(Node$1));

var Identifier = (function (Node) {

function Identifier () {
        Node.apply(this, arguments);
}

if ( Node ) Identifier.__proto__ = Node;
Identifier.prototype = Object.create( Node && Node.prototype );
Identifier.prototype.constructor = Identifier;

Identifier.prototype.bind = function bind ( scope ) {
        if ( isReference( this, this.parent ) ) {
                this.declaration = scope.findDeclaration( this.name );
                this.declaration.addReference( this ); // TODO necessary?
        }
};

Identifier.prototype.gatherPossibleValues = function gatherPossibleValues ( values ) {
        if ( isReference( this, this.parent ) ) {
                values.add( this );
        }
};

Identifier.prototype.render = function render ( code, es ) {
        if ( this.declaration ) {
                var name = this.declaration.getName( es );
                if ( name !== this.name ) {
                        code.overwrite( this.start, this.end, name, true );

                        // special case
                        if ( this.parent.type === 'Property' && this.parent.shorthand ) {
                                code.insertLeft( this.start, ((this.name) + ": ") );
                        }
                }
        }
};

Identifier.prototype.run = function run () {
        if ( this.declaration ) this.declaration.activate();
};

return Identifier;

}(Node$1));

// Statement types which may contain if-statements as direct children. var statementsWithIfStatements = new Set([

'DoWhileStatement',
'ForInStatement',
'ForOfStatement',
'ForStatement',
'IfStatement',
'WhileStatement'

]);

// TODO DRY this out var IfStatement = (function (Statement) {

function IfStatement () {
        Statement.apply(this, arguments);
}

if ( Statement ) IfStatement.__proto__ = Statement;
IfStatement.prototype = Object.create( Statement && Statement.prototype );
IfStatement.prototype.constructor = IfStatement;

IfStatement.prototype.initialise = function initialise ( scope ) {
        this.testValue = this.test.getValue();

        if ( this.module.bundle.treeshake ) {
                if ( this.testValue === UNKNOWN ) {
                        Statement.prototype.initialise.call( this, scope );
                }

                else if ( this.testValue ) {
                        this.consequent.initialise( scope );
                        this.alternate = null;
                }

                else {
                        if ( this.alternate ) this.alternate.initialise( scope );
                        this.consequent = null;
                }
        }

        else {
                Statement.prototype.initialise.call( this, scope );
        }
};

IfStatement.prototype.render = function render ( code, es ) {
        if ( this.module.bundle.treeshake ) {
                if ( this.testValue === UNKNOWN ) {
                        Statement.prototype.render.call( this, code, es );
                }

                else {
                        code.overwrite( this.test.start, this.test.end, JSON.stringify( this.testValue ) );

                        // TODO if no block-scoped declarations, remove enclosing
                        // curlies and dedent block (if there is a block)

                        if ( this.testValue ) {
                                code.remove( this.start, this.consequent.start );
                                code.remove( this.consequent.end, this.end );
                                this.consequent.render( code, es );
                        }

                        else {
                                code.remove( this.start, this.alternate ? this.alternate.start : this.next || this.end );

                                if ( this.alternate ) {
                                        this.alternate.render( code, es );
                                }

                                else if ( statementsWithIfStatements.has( this.parent.type ) ) {
                                        code.insertRight( this.start, '{}' );
                                }
                        }
                }
        }

        else {
                Statement.prototype.render.call( this, code, es );
        }
};

return IfStatement;

}(Statement));

var ImportDeclaration = (function (Node) {

function ImportDeclaration () {
        Node.apply(this, arguments);
}

if ( Node ) ImportDeclaration.__proto__ = Node;
ImportDeclaration.prototype = Object.create( Node && Node.prototype );
ImportDeclaration.prototype.constructor = ImportDeclaration;

ImportDeclaration.prototype.bind = function bind () {
        // noop
        // TODO do the inter-module binding setup here?
};

ImportDeclaration.prototype.initialise = function initialise () {
        this.isImportDeclaration = true;
};

ImportDeclaration.prototype.render = function render ( code ) {
        code.remove( this.start, this.next || this.end );
};

return ImportDeclaration;

}(Node$1));

var Literal = (function (Node) {

function Literal () {
        Node.apply(this, arguments);
}

if ( Node ) Literal.__proto__ = Node;
Literal.prototype = Object.create( Node && Node.prototype );
Literal.prototype.constructor = Literal;

Literal.prototype.getValue = function getValue () {
        return this.value;
};

Literal.prototype.gatherPossibleValues = function gatherPossibleValues ( values ) {
        values.add( this );
};

Literal.prototype.render = function render ( code ) {
        if ( typeof this.value === 'string' ) {
                code.indentExclusionRanges.push([ this.start + 1, this.end - 1 ]);
        }
};

return Literal;

}(Node$1));

var Keypath = function Keypath ( node ) {

var this$1 = this;

this.parts = [];

while ( node.type === 'MemberExpression' ) {
        this$1.parts.unshift( node.property );
        node = node.object;
}

this.root = node;

};

var MemberExpression = (function (Node) {

function MemberExpression () {
        Node.apply(this, arguments);
}

if ( Node ) MemberExpression.__proto__ = Node;
MemberExpression.prototype = Object.create( Node && Node.prototype );
MemberExpression.prototype.constructor = MemberExpression;

MemberExpression.prototype.bind = function bind ( scope ) {
        var this$1 = this;

        // if this resolves to a namespaced declaration, prepare
        // to replace it
        // TODO this code is a bit inefficient
        if ( isReference( this ) ) { // TODO optimise namespace access like `foo['bar']` as well
                var keypath = new Keypath( this );

                var declaration = scope.findDeclaration( keypath.root.name );

                while ( declaration.isNamespace && keypath.parts.length ) {
                        var part = keypath.parts[0];
                        declaration = declaration.module.traceExport( part.name );

                        if ( !declaration ) {
                                this$1.module.bundle.onwarn( ("Export '" + (part.name) + "' is not defined by '" + (this$1.module.id) + "'") );
                                break;
                        }

                        keypath.parts.shift();
                }

                if ( keypath.parts.length ) {
                        Node.prototype.bind.call( this, scope );
                        return; // not a namespaced declaration
                }

                this.declaration = declaration;

                if ( declaration.isExternal ) {
                        declaration.module.suggestName( keypath.root.name );
                }
        }

        else {
                Node.prototype.bind.call( this, scope );
        }
};

MemberExpression.prototype.gatherPossibleValues = function gatherPossibleValues ( values ) {
        values.add( UNKNOWN ); // TODO
};

MemberExpression.prototype.render = function render ( code, es ) {
        if ( this.declaration ) {
                var name = this.declaration.getName( es );
                if ( name !== this.name ) code.overwrite( this.start, this.end, name, true );
        }

        Node.prototype.render.call( this, code, es );
};

MemberExpression.prototype.run = function run ( scope ) {
        if ( this.declaration ) this.declaration.activate();
        Node.prototype.run.call( this, scope );
};

return MemberExpression;

}(Node$1));

var NewExpression = (function (Node) {

function NewExpression () {
        Node.apply(this, arguments);
}

if ( Node ) NewExpression.__proto__ = Node;
NewExpression.prototype = Object.create( Node && Node.prototype );
NewExpression.prototype.constructor = NewExpression;

NewExpression.prototype.hasEffects = function hasEffects ( scope ) {
        return callHasEffects( scope, this.callee );
};

return NewExpression;

}(Node$1));

var ObjectExpression = (function (Node) {

function ObjectExpression () {
        Node.apply(this, arguments);
}

if ( Node ) ObjectExpression.__proto__ = Node;
ObjectExpression.prototype = Object.create( Node && Node.prototype );
ObjectExpression.prototype.constructor = ObjectExpression;

ObjectExpression.prototype.gatherPossibleValues = function gatherPossibleValues ( values ) {
        values.add( OBJECT );
};

return ObjectExpression;

}(Node$1));

var ParenthesizedExpression = (function (Node) {

function ParenthesizedExpression () {
        Node.apply(this, arguments);
}

if ( Node ) ParenthesizedExpression.__proto__ = Node;
ParenthesizedExpression.prototype = Object.create( Node && Node.prototype );
ParenthesizedExpression.prototype.constructor = ParenthesizedExpression;

ParenthesizedExpression.prototype.getPossibleValues = function getPossibleValues ( values ) {
        return this.expression.getPossibleValues( values );
};

ParenthesizedExpression.prototype.getValue = function getValue () {
        return this.expression.getValue();
};

return ParenthesizedExpression;

}(Node$1));

var ReturnStatement = (function (Node) {

function ReturnStatement () {
        Node.apply(this, arguments);
}if ( Node ) ReturnStatement.__proto__ = Node;
ReturnStatement.prototype = Object.create( Node && Node.prototype );
ReturnStatement.prototype.constructor = ReturnStatement;

return ReturnStatement;

}(Node$1));

var TemplateLiteral = (function (Node) {

function TemplateLiteral () {
        Node.apply(this, arguments);
}

if ( Node ) TemplateLiteral.__proto__ = Node;
TemplateLiteral.prototype = Object.create( Node && Node.prototype );
TemplateLiteral.prototype.constructor = TemplateLiteral;

TemplateLiteral.prototype.render = function render ( code, es ) {
        code.indentExclusionRanges.push([ this.start, this.end ]);
        Node.prototype.render.call( this, code, es );
};

return TemplateLiteral;

}(Node$1));

var warning = “The 'this' keyword is equivalent to 'undefined' at the top level of an ES module, and has been rewritten. See github.com/rollup/rollup/wiki/Troubleshooting#this-is-undefined for more information”;

var ThisExpression = (function (Node) {

function ThisExpression () {
        Node.apply(this, arguments);
}

if ( Node ) ThisExpression.__proto__ = Node;
ThisExpression.prototype = Object.create( Node && Node.prototype );
ThisExpression.prototype.constructor = ThisExpression;

ThisExpression.prototype.initialise = function initialise ( scope ) {
        var lexicalBoundary = scope.findLexicalBoundary();

        if ( lexicalBoundary.isModuleScope ) {
                this.alias = this.module.context;
                if ( this.alias === 'undefined' ) {
                        var ref = getLocation( this.module.code, this.start );
                        var line = ref.line;
                        var column = ref.column;
                        var detail = (relativeId( this.module.id )) + " (" + line + ":" + (column + 1) + ")"; // use one-based column number convention
                        this.module.bundle.onwarn( (detail + " " + warning) );
                }
        }
};

ThisExpression.prototype.render = function render ( code ) {
        if ( this.alias ) {
                code.overwrite( this.start, this.end, this.alias, true );
        }
};

return ThisExpression;

}(Node$1));

var ThrowStatement = (function (Node) {

function ThrowStatement () {
        Node.apply(this, arguments);
}

if ( Node ) ThrowStatement.__proto__ = Node;
ThrowStatement.prototype = Object.create( Node && Node.prototype );
ThrowStatement.prototype.constructor = ThrowStatement;

ThrowStatement.prototype.hasEffects = function hasEffects ( scope ) {
        return scope.findLexicalBoundary().isModuleScope; // TODO should this just be `true`? probably...
};

return ThrowStatement;

}(Node$1));

var operators$1 = {

"-": function (value) { return -value; },
"+": function (value) { return +value; },
"!": function (value) { return !value; },
"~": function (value) { return ~value; },
typeof: function (value) { return typeof value; },
void: function () { return undefined; },
delete: function () { return UNKNOWN; }

};

var UnaryExpression = (function (Node) {

function UnaryExpression () {
        Node.apply(this, arguments);
}

if ( Node ) UnaryExpression.__proto__ = Node;
UnaryExpression.prototype = Object.create( Node && Node.prototype );
UnaryExpression.prototype.constructor = UnaryExpression;

UnaryExpression.prototype.bind = function bind ( scope ) {
        if ( this.value === UNKNOWN ) Node.prototype.bind.call( this, scope );
};

UnaryExpression.prototype.getValue = function getValue () {
        var argumentValue = this.argument.getValue();
        if ( argumentValue === UNKNOWN ) return UNKNOWN;

        return operators$1[ this.operator ]( argumentValue );
};

UnaryExpression.prototype.hasEffects = function hasEffects ( scope ) {
        return this.operator === 'delete' || this.argument.hasEffects( scope );
};

UnaryExpression.prototype.initialise = function initialise ( scope ) {
        this.value = this.getValue();
        if ( this.value === UNKNOWN ) Node.prototype.initialise.call( this, scope );
};

return UnaryExpression;

}(Node$1));

var UpdateExpression = (function (Node) {

function UpdateExpression () {
        Node.apply(this, arguments);
}

if ( Node ) UpdateExpression.__proto__ = Node;
UpdateExpression.prototype = Object.create( Node && Node.prototype );
UpdateExpression.prototype.constructor = UpdateExpression;

UpdateExpression.prototype.bind = function bind ( scope ) {
        var subject = this.argument;
        while ( this.argument.type === 'ParenthesizedExpression' ) subject = subject.expression;

        this.subject = subject;
        disallowIllegalReassignment( scope, this.argument );

        if ( subject.type === 'Identifier' ) {
                var declaration = scope.findDeclaration( subject.name );
                declaration.isReassigned = true;

                if ( declaration.possibleValues ) {
                        declaration.possibleValues.add( NUMBER );
                }
        }

        Node.prototype.bind.call( this, scope );
};

UpdateExpression.prototype.hasEffects = function hasEffects ( scope ) {
        return isUsedByBundle( scope, this.subject );
};

UpdateExpression.prototype.initialise = function initialise ( scope ) {
        this.scope = scope;

        this.module.bundle.dependentExpressions.push( this );
        Node.prototype.initialise.call( this, scope );
};

UpdateExpression.prototype.isUsedByBundle = function isUsedByBundle$1 () {
        return isUsedByBundle( this.scope, this.subject );
};

return UpdateExpression;

}(Node$1));

var DeclaratorProxy = function DeclaratorProxy ( name, declarator, isTopLevel, init ) {

this.name = name;
this.declarator = declarator;

this.activated = false;
this.isReassigned = false;
this.exportName = null;

this.duplicates = [];
this.possibleValues = new Set( init ? [ init ] : null );

};

DeclaratorProxy.prototype.activate = function activate () {

this.activated = true;
this.declarator.activate();
this.duplicates.forEach( function (dupe) { return dupe.activate(); } );

};

DeclaratorProxy.prototype.addReference = function addReference () {

/* noop? */

};

DeclaratorProxy.prototype.gatherPossibleValues = function gatherPossibleValues ( values ) {

this.possibleValues.forEach( function (value) { return values.add( value ); } );

};

DeclaratorProxy.prototype.getName = function getName ( es ) {

// TODO desctructuring...
if ( es ) return this.name;
if ( !this.isReassigned || !this.exportName ) return this.name;

return ("exports." + (this.exportName));

};

DeclaratorProxy.prototype.toString = function toString () {

return this.name;

};

var VariableDeclarator = (function (Node) {

function VariableDeclarator () {
        Node.apply(this, arguments);
}

if ( Node ) VariableDeclarator.__proto__ = Node;
VariableDeclarator.prototype = Object.create( Node && Node.prototype );
VariableDeclarator.prototype.constructor = VariableDeclarator;

VariableDeclarator.prototype.activate = function activate () {
        if ( this.activated ) return;
        this.activated = true;

        this.run( this.findScope() );
};

VariableDeclarator.prototype.hasEffects = function hasEffects ( scope ) {
        return this.init && this.init.hasEffects( scope );
};

VariableDeclarator.prototype.initialise = function initialise ( scope ) {
        var this$1 = this;

        this.proxies = new Map();

        var lexicalBoundary = scope.findLexicalBoundary();

        var init = this.init ?
                ( this.id.type === 'Identifier' ? this.init : UNKNOWN ) : // TODO maybe UNKNOWN is unnecessary
                null;

        extractNames( this.id ).forEach( function (name) {
                var proxy = new DeclaratorProxy( name, this$1, lexicalBoundary.isModuleScope, init );

                this$1.proxies.set( name, proxy );
                scope.addDeclaration( name, proxy, this$1.parent.kind === 'var' );
        });

        Node.prototype.initialise.call( this, scope );
};

VariableDeclarator.prototype.render = function render ( code, es ) {
        var this$1 = this;

        extractNames( this.id ).forEach( function (name) {
                var declaration = this$1.proxies.get( name );

                if ( !es && declaration.exportName && declaration.isReassigned ) {
                        if ( this$1.init ) {
                                code.overwrite( this$1.start, this$1.id.end, declaration.getName( es ) );
                        } else if ( this$1.module.bundle.treeshake ) {
                                code.remove( this$1.start, this$1.end );
                        }
                }
        });

        Node.prototype.render.call( this, code, es );
};

return VariableDeclarator;

}(Node$1));

function getSeparator ( code, start ) {

var c = start;

while ( c > 0 && code[ c - 1 ] !== '\n' ) {
        c -= 1;
        if ( code[c] === ';' || code[c] === '{' ) return '; ';
}

var lineStart = code.slice( c, start ).match( /^\s*/ )[0];

return (";\n" + lineStart);

}

var forStatement = /^For(?:Of|In)?Statement/;

var VariableDeclaration = (function (Node) {

function VariableDeclaration () {
        Node.apply(this, arguments);
}

if ( Node ) VariableDeclaration.__proto__ = Node;
VariableDeclaration.prototype = Object.create( Node && Node.prototype );
VariableDeclaration.prototype.constructor = VariableDeclaration;

VariableDeclaration.prototype.initialise = function initialise ( scope ) {
        this.scope = scope;
        Node.prototype.initialise.call( this, scope );
};

VariableDeclaration.prototype.render = function render ( code, es ) {
        var this$1 = this;

        var treeshake = this.module.bundle.treeshake;

        var shouldSeparate = false;
        var separator;

        if ( this.scope.isModuleScope && !forStatement.test( this.parent.type ) ) {
                shouldSeparate = true;
                separator = getSeparator( this.module.code, this.start );
        }

        var c = this.start;
        var empty = true;

        var loop = function ( i ) {
                var declarator = this$1.declarations[i];

                var prefix = empty ? '' : separator; // TODO indentation

                if ( declarator.id.type === 'Identifier' ) {
                        var proxy = declarator.proxies.get( declarator.id.name );
                        var isExportedAndReassigned = !es && proxy.exportName && proxy.isReassigned;

                        if ( isExportedAndReassigned ) {
                                if ( declarator.init ) {
                                        if ( shouldSeparate ) code.overwrite( c, declarator.start, prefix );
                                        c = declarator.end;
                                        empty = false;
                                }
                        } else if ( !treeshake || proxy.activated ) {
                                if ( shouldSeparate ) code.overwrite( c, declarator.start, ("" + prefix + (this$1.kind) + " ") ); // TODO indentation
                                c = declarator.end;
                                empty = false;
                        }
                }

                else {
                        var exportAssignments = [];
                        var activated = false;

                        extractNames( declarator.id ).forEach( function (name) {
                                var proxy = declarator.proxies.get( name );
                                var isExportedAndReassigned = !es && proxy.exportName && proxy.isReassigned;

                                if ( isExportedAndReassigned ) {
                                        // code.overwrite( c, declarator.start, prefix );
                                        // c = declarator.end;
                                        // empty = false;
                                        exportAssignments.push( 'TODO' );
                                } else if ( declarator.activated ) {
                                        activated = true;
                                }
                        });

                        if ( !treeshake || activated ) {
                                if ( shouldSeparate ) code.overwrite( c, declarator.start, ("" + prefix + (this$1.kind) + " ") ); // TODO indentation
                                c = declarator.end;
                                empty = false;
                        }

                        if ( exportAssignments.length ) {
                                throw new Error( 'TODO' );
                        }
                }

                declarator.render( code, es );
        };

        for ( var i = 0; i < this.declarations.length; i += 1 ) loop( i );

        if ( treeshake && empty ) {
                code.remove( this.leadingCommentStart || this.start, this.next || this.end );
        } else {
                // always include a semi-colon (https://github.com/rollup/rollup/pull/1013),
                // unless it's a var declaration in a loop head
                var needsSemicolon = !forStatement.test( this.parent.type );

                if ( this.end > c ) {
                        code.overwrite( c, this.end, needsSemicolon ? ';' : '' );
                } else if ( needsSemicolon  ) {
                        this.insertSemicolon( code );
                }
        }
};

return VariableDeclaration;

}(Node$1));

var nodes = {

ArrayExpression: ArrayExpression,
ArrowFunctionExpression: ArrowFunctionExpression,
AssignmentExpression: AssignmentExpression,
BinaryExpression: BinaryExpression,
BlockStatement: BlockStatement,
CallExpression: CallExpression,
ClassDeclaration: ClassDeclaration,
ClassExpression: ClassExpression,
ConditionalExpression: ConditionalExpression,
DoWhileStatement: Statement,
EmptyStatement: EmptyStatement,
ExportAllDeclaration: ExportAllDeclaration,
ExportDefaultDeclaration: ExportDefaultDeclaration,
ExportNamedDeclaration: ExportNamedDeclaration,
ExpressionStatement: ExpressionStatement,
ForStatement: ForStatement,
ForInStatement: ForInStatement,
ForOfStatement: ForOfStatement,
FunctionDeclaration: FunctionDeclaration,
FunctionExpression: FunctionExpression,
Identifier: Identifier,
IfStatement: IfStatement,
ImportDeclaration: ImportDeclaration,
Literal: Literal,
MemberExpression: MemberExpression,
NewExpression: NewExpression,
ObjectExpression: ObjectExpression,
ParenthesizedExpression: ParenthesizedExpression,
ReturnStatement: ReturnStatement,
SwitchStatement: Statement,
TemplateLiteral: TemplateLiteral,
ThisExpression: ThisExpression,
ThrowStatement: ThrowStatement,
TryStatement: Statement,
UnaryExpression: UnaryExpression,
UpdateExpression: UpdateExpression,
VariableDeclarator: VariableDeclarator,
VariableDeclaration: VariableDeclaration,
WhileStatement: Statement

};

var keys$1 = {

Program: [ 'body' ],
Literal: []

};

var newline = /n/;

function enhance ( ast, module, comments ) {

enhanceNode( ast, module, module, module.magicString );

var comment = comments.shift();

for ( var node of ast.body ) {
        if ( comment && ( comment.start < node.start ) ) {
                node.leadingCommentStart = comment.start;
        }

        while ( comment && comment.end < node.end ) comment = comments.shift();

        // if the next comment is on the same line as the end of the node,
        // treat is as a trailing comment
        if ( comment && !newline.test( module.code.slice( node.end, comment.start ) ) ) {
                node.trailingCommentEnd = comment.end; // TODO is node.trailingCommentEnd used anywhere?
                comment = comments.shift();
        }

        node.initialise( module.scope );
}

}

function enhanceNode ( raw, parent, module, code ) {

if ( !raw ) return;

if ( 'length' in raw ) {
        for ( var i = 0; i < raw.length; i += 1 ) {
                enhanceNode( raw[i], parent, module, code );
        }

        return;
}

// with e.g. shorthand properties, key and value are
// the same node. We don't want to enhance an object twice
if ( raw.__enhanced ) return;
raw.__enhanced = true;

if ( !keys$1[ raw.type ] ) {
        keys$1[ raw.type ] = Object.keys( raw ).filter( function (key) { return typeof raw[ key ] === 'object'; } );
}

raw.parent = parent;
raw.module = module;
raw.keys = keys$1[ raw.type ];

code.addSourcemapLocation( raw.start );
code.addSourcemapLocation( raw.end );

for ( var key of keys$1[ raw.type ] ) {
        enhanceNode( raw[ key ], raw, module, code );
}

var type = nodes[ raw.type ] || Node$1;
raw.__proto__ = type.prototype;

}

var ModuleScope = (function (Scope) {

function ModuleScope ( module ) {
        Scope.call(this, {
                isBlockScope: false,
                isLexicalBoundary: true,
                isModuleScope: true,
                parent: module.bundle.scope
        });

        this.module = module;
}

if ( Scope ) ModuleScope.__proto__ = Scope;
ModuleScope.prototype = Object.create( Scope && Scope.prototype );
ModuleScope.prototype.constructor = ModuleScope;

ModuleScope.prototype.deshadow = function deshadow ( names ) {
        var this$1 = this;

        names = new Map( names );

        forOwn( this.module.imports, function (specifier) {
                if ( specifier.module.isExternal ) return;

                specifier.module.getExports().forEach( function (name) {
                        names.set(name);
                });

                if ( specifier.name !== '*' ) {
                        var declaration = specifier.module.traceExport( specifier.name );
                        if ( !declaration ) {
                                this$1.module.bundle.onwarn( ("Non-existent export '" + (specifier.name) + "' is imported from " + (specifier.module.id) + " by " + (this$1.module.id)) );
                                return;
                        }
                        var name = declaration.getName( true );
                        if ( name !== specifier.name ) {
                                names.set( declaration.getName( true ) );
                        }
                }
        });

        Scope.prototype.deshadow.call( this, names );
};

ModuleScope.prototype.findDeclaration = function findDeclaration ( name ) {
        if ( this.declarations[ name ] ) {
                return this.declarations[ name ];
        }

        return this.module.trace( name ) || this.parent.findDeclaration( name );
};

ModuleScope.prototype.findLexicalBoundary = function findLexicalBoundary () {
        return this;
};

return ModuleScope;

}(Scope));

function tryParse ( code, comments, acornOptions, id ) {

try {
        return parse( code, assign({
                ecmaVersion: 7,
                sourceType: 'module',
                onComment: function ( block, text, start, end ) { return comments.push({ block: block, text: text, start: start, end: end }); },
                preserveParens: true
        }, acornOptions ));
} catch ( err ) {
        err.code = 'PARSE_ERROR';
        err.file = id; // see above - not necessarily true, but true enough
        err.message += " in " + id;
        throw err;
}

}

var Module = function Module (ref) {

var this$1 = this;
var id = ref.id;
var code = ref.code;
var originalCode = ref.originalCode;
var originalSourceMap = ref.originalSourceMap;
var ast = ref.ast;
var sourceMapChain = ref.sourceMapChain;
var resolvedIds = ref.resolvedIds;
var bundle = ref.bundle;

this.code = code;
this.originalCode = originalCode;
this.originalSourceMap = originalSourceMap;
this.sourceMapChain = sourceMapChain;

this.comments = [];

timeStart( 'ast' );

this.ast = ast || tryParse( code, this.comments, bundle.acornOptions, id ); // TODO what happens to comments if AST is provided?
this.astClone = deepClone( this.ast );

timeEnd( 'ast' );

this.bundle = bundle;
this.id = id;
this.excludeFromSourcemap = /\0/.test( id );
this.context = bundle.getModuleContext( id );

// all dependencies
this.sources = [];
this.dependencies = [];
this.resolvedIds = resolvedIds || blank();

// imports and exports, indexed by local name
this.imports = blank();
this.exports = blank();
this.exportsAll = blank();
this.reexports = blank();

this.exportAllSources = [];
this.exportAllModules = null;

// By default, `id` is the filename. Custom resolvers and loaders
// can change that, but it makes sense to use it for the source filename
this.magicString = new MagicString( code, {
        filename: this.excludeFromSourcemap ? null : id, // don't include plugin helpers in sourcemap
        indentExclusionRanges: []
});

// remove existing sourceMappingURL comments
var pattern = new RegExp( ("\\/\\/#\\s+" + SOURCEMAPPING_URL$1 + "=.+\\n?"), 'g' );
var match;
while ( match = pattern.exec( code ) ) {
        this$1.magicString.remove( match.index, match.index + match[0].length );
}

this.declarations = blank();
this.type = 'Module'; // TODO only necessary so that Scope knows this should be treated as a function scope... messy
this.scope = new ModuleScope( this );

timeStart( 'analyse' );

this.analyse();

timeEnd( 'analyse' );

this.strongDependencies = [];

};

Module.prototype.addExport = function addExport ( node ) {

        var this$1 = this;

var source = node.source && node.source.value;

// export { name } from './other.js'
if ( source ) {
        if ( !~this.sources.indexOf( source ) ) this.sources.push( source );

        if ( node.type === 'ExportAllDeclaration' ) {
                // Store `export * from '...'` statements in an array of delegates.
                // When an unknown import is encountered, we see if one of them can satisfy it.
                this.exportAllSources.push( source );
        }

        else {
                node.specifiers.forEach( function (specifier) {
                        var name = specifier.exported.name;

                        if ( this$1.exports[ name ] || this$1.reexports[ name ] ) {
                                throw new Error( ("A module cannot have multiple exports with the same name ('" + name + "')") );
                        }

                        this$1.reexports[ name ] = {
                                start: specifier.start,
                                source: source,
                                localName: specifier.local.name,
                                module: null // filled in later
                        };
                });
        }
}

// export default function foo () {}
// export default foo;
// export default 42;
else if ( node.type === 'ExportDefaultDeclaration' ) {
        var identifier = ( node.declaration.id && node.declaration.id.name ) || node.declaration.name;

        if ( this.exports.default ) {
                // TODO indicate location
                throw new Error( 'A module can only have one default export' );
        }

        this.exports.default = {
                localName: 'default',
                identifier: identifier
        };

        // create a synthetic declaration
        //this.declarations.default = new SyntheticDefaultDeclaration( node, identifier || this.basename() );
}

// export var { foo, bar } = ...
// export var foo = 42;
// export var a = 1, b = 2, c = 3;
// export function foo () {}
else if ( node.declaration ) {
        var declaration = node.declaration;

        if ( declaration.type === 'VariableDeclaration' ) {
                declaration.declarations.forEach( function (decl) {
                        extractNames( decl.id ).forEach( function (localName) {
                                this$1.exports[ localName ] = { localName: localName };
                        });
                });
        } else {
                // export function foo () {}
                var localName = declaration.id.name;
                this.exports[ localName ] = { localName: localName };
        }
}

// export { foo, bar, baz }
else {
        if ( node.specifiers.length ) {
                node.specifiers.forEach( function (specifier) {
                        var localName = specifier.local.name;
                        var exportedName = specifier.exported.name;

                        if ( this$1.exports[ exportedName ] || this$1.reexports[ exportedName ] ) {
                                throw new Error( ("A module cannot have multiple exports with the same name ('" + exportedName + "')") );
                        }

                        // `export { default as foo }` – special case. We want importers
                        // to use the UnboundDefaultExport proxy, not the original declaration
                        if ( exportedName === 'default' ) {
                                this$1.exports[ exportedName ] = { localName: 'default' };
                        } else {
                                this$1.exports[ exportedName ] = { localName: localName };
                        }
                });
        } else {
                this.bundle.onwarn( ("Module " + (this.id) + " has an empty export declaration") );
        }
}

};

Module.prototype.addImport = function addImport ( node ) {

        var this$1 = this;

var source = node.source.value;

if ( !~this.sources.indexOf( source ) ) this.sources.push( source );

node.specifiers.forEach( function (specifier) {
        var localName = specifier.local.name;

        if ( this$1.imports[ localName ] ) {
                var err = new Error( ("Duplicated import '" + localName + "'") );
                        err.file = this$1.id;
                err.loc = getLocation( this$1.code, specifier.start );
                throw err;
        }

        var isDefault = specifier.type === 'ImportDefaultSpecifier';
        var isNamespace = specifier.type === 'ImportNamespaceSpecifier';

        var name = isDefault ? 'default' : isNamespace ? '*' : specifier.imported.name;
        this$1.imports[ localName ] = { source: source, name: name, module: null };
});

};

Module.prototype.analyse = function analyse () {

        var this$1 = this;

enhance( this.ast, this, this.comments );

// discover this module's imports and exports
var lastNode;

for ( var node of this.ast.body ) {
        if ( node.isImportDeclaration ) {
                this$1.addImport( node );
        } else if ( node.isExportDeclaration ) {
                this$1.addExport( node );
        }

        if ( lastNode ) lastNode.next = node.leadingCommentStart || node.start;
        lastNode = node;
}

};

Module.prototype.basename = function basename$1 () {

var base = path.basename( this.id );
var ext = path.extname( this.id );

return makeLegalIdentifier( ext ? base.slice( 0, -ext.length ) : base );

};

Module.prototype.bindImportSpecifiers = function bindImportSpecifiers () {

        var this$1 = this;

[ this.imports, this.reexports ].forEach( function (specifiers) {
        keys( specifiers ).forEach( function (name) {
                var specifier = specifiers[ name ];

                var id = this$1.resolvedIds[ specifier.source ];
                specifier.module = this$1.bundle.moduleById.get( id );
        });
});

this.exportAllModules = this.exportAllSources.map( function (source) {
        var id = this$1.resolvedIds[ source ];
        return this$1.bundle.moduleById.get( id );
});

this.sources.forEach( function (source) {
        var id = this$1.resolvedIds[ source ];
        var module = this$1.bundle.moduleById.get( id );

        if ( !module.isExternal ) this$1.dependencies.push( module );
});

};

Module.prototype.bindReferences = function bindReferences () {

        var this$1 = this;

for ( var node of this.ast.body ) {
        node.bind( this$1.scope );
}

// if ( this.declarations.default ) {
// if ( this.exports.default.identifier ) {
//      const declaration = this.trace( this.exports.default.identifier );
//      if ( declaration ) this.declarations.default.bind( declaration );
// }
// }

};

Module.prototype.findParent = function findParent () {

// TODO what does it mean if we're here?
return null;

};

Module.prototype.findScope = function findScope () {

return this.scope;

};

Module.prototype.getExports = function getExports () {

var exports = blank();

keys( this.exports ).forEach( function (name) {
        exports[ name ] = true;
});

keys( this.reexports ).forEach( function (name) {
                exports[ name ] = true;
        });

this.exportAllModules.forEach( function (module) {
        if ( module.isExternal ) return; // TODO

        module.getExports().forEach( function (name) {
                if ( name !== 'default' ) exports[ name ] = true;
        });
});

return keys( exports );

};

Module.prototype.namespace = function namespace () {

if ( !this.declarations['*'] ) {
        this.declarations['*'] = new SyntheticNamespaceDeclaration( this );
}

return this.declarations['*'];

};

Module.prototype.render = function render ( es, legacy ) {

var magicString = this.magicString.clone();

for ( var node of this.ast.body ) {
        node.render( magicString, es );
}

if ( this.namespace().needsNamespaceBlock ) {
        magicString.append( '\n\n' + this.namespace().renderBlock( es, legacy, '\t' ) ); // TODO use correct indentation
}

return magicString.trim();

};

Module.prototype.run = function run () {

        var this$1 = this;

for ( var node of this.ast.body ) {
        if ( node.hasEffects( this$1.scope ) ) {
                node.run( this$1.scope );
        }
}

};

Module.prototype.toJSON = function toJSON () {

return {
        id: this.id,
        dependencies: this.dependencies.map( function (module) { return module.id; } ),
        code: this.code,
        originalCode: this.originalCode,
        ast: this.astClone,
        sourceMapChain: this.sourceMapChain,
        resolvedIds: this.resolvedIds
};

};

Module.prototype.trace = function trace ( name ) {

// TODO this is slightly circular
if ( name in this.scope.declarations ) {
        return this.scope.declarations[ name ];
}

if ( name in this.imports ) {
        var importDeclaration = this.imports[ name ];
        var otherModule = importDeclaration.module;

        if ( importDeclaration.name === '*' && !otherModule.isExternal ) {
                return otherModule.namespace();
        }

        var declaration = otherModule.traceExport( importDeclaration.name );

        if ( !declaration ) throw new Error( ("'" + (importDeclaration.name) + "' is not exported by " + (relativeId( otherModule.id )) + " (imported by " + (relativeId( this.id )) + "). For help fixing this error see https://github.com/rollup/rollup/wiki/Troubleshooting#name-is-not-exported-by-module") );
        return declaration;
}

return null;

};

Module.prototype.traceExport = function traceExport ( name ) {

        var this$1 = this;

// export { foo } from './other.js'
var reexportDeclaration = this.reexports[ name ];
if ( reexportDeclaration ) {
        var declaration = reexportDeclaration.module.traceExport( reexportDeclaration.localName );

        if ( !declaration ) {
                var err = new Error( ("'" + (reexportDeclaration.localName) + "' is not exported by '" + (reexportDeclaration.module.id) + "' (imported by '" + (this.id) + "')") );
                err.file = this.id;
                err.loc = getLocation( this.code, reexportDeclaration.start );
                throw err;
        }

        return declaration;
}

var exportDeclaration = this.exports[ name ];
if ( exportDeclaration ) {
        var name$1 = exportDeclaration.localName;
        var declaration$1 = this.trace( name$1 );

        return declaration$1 || this.bundle.scope.findDeclaration( name$1 );
}

for ( var i = 0; i < this.exportAllModules.length; i += 1 ) {
        var module = this$1.exportAllModules[i];
        var declaration$2 = module.traceExport( name );

        if ( declaration$2 ) return declaration$2;
}

};

var ExternalModule = function ExternalModule ( id, relativePath ) {

this.id = id;
this.path = relativePath;

this.name = makeLegalIdentifier( relativePath );

this.nameSuggestions = blank();
this.mostCommonSuggestion = 0;

this.isExternal = true;
this.declarations = blank();

this.exportsNames = false;

};

ExternalModule.prototype.suggestName = function suggestName ( name ) {

if ( !this.nameSuggestions[ name ] ) this.nameSuggestions[ name ] = 0;
this.nameSuggestions[ name ] += 1;

if ( this.nameSuggestions[ name ] > this.mostCommonSuggestion ) {
        this.mostCommonSuggestion = this.nameSuggestions[ name ];
        this.name = name;
}

};

ExternalModule.prototype.traceExport = function traceExport ( name ) {

if ( name !== 'default' && name !== '*' ) this.exportsNames = true;
if ( name === '*' ) this.exportsNamespace = true;

return this.declarations[ name ] || (
        this.declarations[ name ] = new ExternalDeclaration( this, name )
);

};

function getName ( x ) {

return x.name;

}

function quotePath ( x ) {

return ("'" + (x.path) + "'");

}

function req ( x ) {

return ("require('" + (x.path) + "')");

}

function getInteropBlock ( bundle, options ) {

return bundle.externalModules
        .map( function (module) {
                if ( !module.declarations.default || options.interop === false ) return null;

                if ( module.exportsNamespace ) {
                        return ((bundle.varOrConst) + " " + (module.name) + "__default = " + (module.name) + "['default'];");
                }

                if ( module.exportsNames ) {
                        return ((bundle.varOrConst) + " " + (module.name) + "__default = 'default' in " + (module.name) + " ? " + (module.name) + "['default'] : " + (module.name) + ";");
                }

                return ((module.name) + " = 'default' in " + (module.name) + " ? " + (module.name) + "['default'] : " + (module.name) + ";");
        })
        .filter( Boolean )
        .join( '\n' );

}

function getExportBlock ( entryModule, exportMode, mechanism ) {

if ( mechanism === void 0 ) mechanism = 'return';

if ( exportMode === 'default' ) {
        return (mechanism + " " + (entryModule.traceExport( 'default' ).getName( false )) + ";");
}

return entryModule.getExports()
        .map( function (name) {
                var prop = name === 'default' ? "['default']" : ("." + name);
                var declaration = entryModule.traceExport( name );

                var lhs = "exports" + prop;
                var rhs = declaration ?
                        declaration.getName( false ) :
                        name; // exporting a global

                // prevent `exports.count = exports.count`
                if ( lhs === rhs ) return null;

                return (lhs + " = " + rhs + ";");
        })
        .filter( Boolean )
        .join( '\n' );

}

var esModuleExport = “Object.defineProperty(exports, '__esModule', { value: true });”;

function amd ( bundle, magicString, ref, options ) {

var exportMode = ref.exportMode;
var indentString = ref.indentString;
var intro = ref.intro;

var deps = bundle.externalModules.map( quotePath );
var args = bundle.externalModules.map( getName );

if ( exportMode === 'named' ) {
        args.unshift( "exports" );
        deps.unshift( "'exports'" );
}

var params =
        ( options.moduleId ? ("'" + (options.moduleId) + "', ") : "" ) +
        ( deps.length ? ("[" + (deps.join( ', ' )) + "], ") : "" );

var useStrict = options.useStrict !== false ? " 'use strict';" : "";
var wrapperStart = "define(" + params + "function (" + (args.join( ', ' )) + ") {" + useStrict + "\n\n";

// var foo__default = 'default' in foo ? foo['default'] : foo;
var interopBlock = getInteropBlock( bundle, options );
if ( interopBlock ) magicString.prepend( interopBlock + '\n\n' );

if ( intro ) magicString.prepend( intro );

var exportBlock = getExportBlock( bundle.entryModule, exportMode );
if ( exportBlock ) magicString.append( '\n\n' + exportBlock );
if ( exportMode === 'named' ) magicString.append( ("\n\n" + esModuleExport) );
if ( options.outro ) magicString.append( ("\n" + (options.outro)) );

return magicString
        .indent( indentString )
        .append( '\n\n});' )
        .prepend( wrapperStart );

}

function cjs ( bundle, magicString, ref, options ) {

var exportMode = ref.exportMode;
var intro = ref.intro;

intro = ( options.useStrict === false ? intro : ("'use strict';\n\n" + intro) ) +
        ( exportMode === 'named' ? (esModuleExport + "\n\n") : '' );

var needsInterop = false;

var varOrConst = bundle.varOrConst;
var interop = options.interop !== false;

// TODO handle empty imports, once they're supported
var importBlock = bundle.externalModules
        .map( function (module) {
                if ( interop && module.declarations.default ) {
                        if ( module.exportsNamespace ) {
                                return varOrConst + " " + (module.name) + " = require('" + (module.path) + "');" +
                                        "\n" + varOrConst + " " + (module.name) + "__default = " + (module.name) + "['default'];";
                        }

                        needsInterop = true;

                        if ( module.exportsNames ) {
                                return varOrConst + " " + (module.name) + " = require('" + (module.path) + "');" +
                                        "\n" + varOrConst + " " + (module.name) + "__default = _interopDefault(" + (module.name) + ");";
                        }

                        return (varOrConst + " " + (module.name) + " = _interopDefault(require('" + (module.path) + "'));");
                } else {
                        return (varOrConst + " " + (module.name) + " = require('" + (module.path) + "');");
                }
        })
        .join( '\n' );

if ( needsInterop ) {
        intro += "function _interopDefault (ex) { return (ex && (typeof ex === 'object') && 'default' in ex) ? ex['default'] : ex; }\n\n";
}

if ( importBlock ) {
        intro += importBlock + '\n\n';
}

magicString.prepend( intro );

var exportBlock = getExportBlock( bundle.entryModule, exportMode, 'module.exports =' );
if ( exportBlock ) magicString.append( '\n\n' + exportBlock );
if ( options.outro ) magicString.append( ("\n" + (options.outro)) );

return magicString;

}

function notDefault ( name ) {

return name !== 'default';

}

function es ( bundle, magicString, ref, options ) {

var intro = ref.intro;

var importBlock = bundle.externalModules
        .map( function (module) {
                var specifiers = [];
                var specifiersList = [specifiers];
                var importedNames = keys( module.declarations )
                        .filter( function (name) { return name !== '*' && name !== 'default'; } )
                        .map( function (name) {
                                var declaration = module.declarations[ name ];

                                if ( declaration.name === declaration.safeName ) return declaration.name;
                                return ((declaration.name) + " as " + (declaration.safeName));
                        });

                if ( module.declarations.default ) {
                        if ( module.exportsNamespace ) {
                                specifiersList.push([ ((module.name) + "__default") ]);
                        } else {
                                specifiers.push( module.name );
                        }
                }

                var namespaceSpecifier = module.declarations['*'] ? ("* as " + (module.name)) : null; // TODO prevent unnecessary namespace import, e.g form/external-imports
                var namedSpecifier = importedNames.length ? ("{ " + (importedNames.sort().join( ', ' )) + " }") : null;

                if ( namespaceSpecifier && namedSpecifier ) {
                        // Namespace and named specifiers cannot be combined.
                        specifiersList.push( [namespaceSpecifier] );
                        specifiers.push( namedSpecifier );
                } else if ( namedSpecifier ) {
                        specifiers.push( namedSpecifier );
                } else if ( namespaceSpecifier ) {
                        specifiers.push( namespaceSpecifier );
                }

                return specifiersList
                        .map( function (specifiers) { return specifiers.length ?
                                        ("import " + (specifiers.join( ', ' )) + " from '" + (module.path) + "';") :
                                        ("import '" + (module.path) + "';"); }
                        )
                        .join( '\n' );
        })
        .join( '\n' );

if ( importBlock ) intro += importBlock + '\n\n';
if ( intro ) magicString.prepend( intro );

var module = bundle.entryModule;

var specifiers = module.getExports().filter( notDefault ).map( function (name) {
        var declaration = module.traceExport( name );
        var rendered = declaration.getName( true );

        return rendered === name ?
                name :
                (rendered + " as " + name);
});

var exportBlock = specifiers.length ? ("export { " + (specifiers.join(', ')) + " };") : '';

var defaultExport = module.exports.default || module.reexports.default;
if ( defaultExport ) {
        exportBlock += "export default " + (module.traceExport( 'default' ).getName( true )) + ";";
}

if ( exportBlock ) magicString.append( '\n\n' + exportBlock.trim() );
if ( options.outro ) magicString.append( ("\n" + (options.outro)) );

return magicString.trim();

}

function getGlobalNameMaker ( globals, onwarn ) {

var fn = typeof globals === 'function' ? globals : function (id) { return globals[ id ]; };

return function ( module ) {
        var name = fn( module.id );
        if ( name ) return name;

        onwarn( ("No name was provided for external module '" + (module.id) + "' in options.globals – guessing '" + (module.name) + "'") );
        return module.name;
};

}

function setupNamespace ( keypath ) {

var parts = keypath.split( '.' ); // TODO support e.g. `foo['something-hyphenated']`?

parts.pop();

var acc = 'this';

return parts
        .map( function (part) { return ( acc += "." + part, (acc + " = " + acc + " || {};") ); } )
        .join( '\n' ) + '\n';

}

function iife ( bundle, magicString, ref, options ) {

var exportMode = ref.exportMode;
var indentString = ref.indentString;
var intro = ref.intro;

var globalNameMaker = getGlobalNameMaker( options.globals || blank(), bundle.onwarn );

var name = options.moduleName;
var isNamespaced = name && ~name.indexOf( '.' );

var dependencies = bundle.externalModules.map( globalNameMaker );

var args = bundle.externalModules.map( getName );

if ( exportMode !== 'none' && !name ) {
        throw new Error( 'You must supply options.moduleName for IIFE bundles' );
}

if ( exportMode === 'named' ) {
        dependencies.unshift( ("(this." + name + " = this." + name + " || {})") );
        args.unshift( 'exports' );
}

var useStrict = options.useStrict !== false ? (indentString + "'use strict';\n\n") : "";

var wrapperIntro = "(function (" + args + ") {\n" + useStrict;
var wrapperOutro = "\n\n}(" + dependencies + "));";

if ( exportMode === 'default' ) {
        wrapperIntro = ( isNamespaced ? "this." : ((bundle.varOrConst) + " ") ) + name + " = " + wrapperIntro;
}

if ( isNamespaced ) {
        wrapperIntro = setupNamespace( name ) + wrapperIntro;
}

// var foo__default = 'default' in foo ? foo['default'] : foo;
var interopBlock = getInteropBlock( bundle, options );
if ( interopBlock ) magicString.prepend( interopBlock + '\n\n' );

if ( intro ) magicString.prepend( intro );

var exportBlock = getExportBlock( bundle.entryModule, exportMode );
if ( exportBlock ) magicString.append( '\n\n' + exportBlock );
if ( options.outro ) magicString.append( ("\n" + (options.outro)) );

return magicString
        .indent( indentString )
        .prepend( wrapperIntro )
        .append( wrapperOutro );

}

function setupNamespace$1 ( name ) {

var parts = name.split( '.' );
parts.pop();

var acc = 'global';
return parts
        .map( function (part) { return ( acc += "." + part, (acc + " = " + acc + " || {}") ); } )
        .concat( ("global." + name) )
        .join( ', ' );

}

var wrapperOutro = 'nn})));';

function umd ( bundle, magicString, ref, options ) {

var exportMode = ref.exportMode;
var indentString = ref.indentString;
var intro = ref.intro;

if ( exportMode !== 'none' && !options.moduleName ) {
        throw new Error( 'You must supply options.moduleName for UMD bundles' );
}

var globalNameMaker = getGlobalNameMaker( options.globals || blank(), bundle.onwarn );

var amdDeps = bundle.externalModules.map( quotePath );
var cjsDeps = bundle.externalModules.map( req );
var globalDeps = bundle.externalModules.map( function (module) { return ("global." + (globalNameMaker( module ))); } );

var args = bundle.externalModules.map( getName );

if ( exportMode === 'named' ) {
        amdDeps.unshift( "'exports'" );
        cjsDeps.unshift( "exports" );
        globalDeps.unshift( ("(" + (setupNamespace$1(options.moduleName)) + " = global." + (options.moduleName) + " || {})") );

        args.unshift( 'exports' );
}

var amdParams =
        ( options.moduleId ? ("'" + (options.moduleId) + "', ") : "" ) +
        ( amdDeps.length ? ("[" + (amdDeps.join( ', ' )) + "], ") : "" );

var cjsExport = exportMode === 'default' ? "module.exports = " : "";
var defaultExport = exportMode === 'default' ? ((setupNamespace$1(options.moduleName)) + " = ") : '';

var useStrict = options.useStrict !== false ? " 'use strict';" : "";

var globalExport = options.noConflict === true ?
        ("(function() {\n\t\t\t\tvar current = global." + (options.moduleName) + ";\n\t\t\t\tvar exports = factory(" + globalDeps + ");\n\t\t\t\tglobal." + (options.moduleName) + " = exports;\n\t\t\t\texports.noConflict = function() { global." + (options.moduleName) + " = current; return exports; };\n\t\t\t})()") : ("(" + defaultExport + "factory(" + globalDeps + "))");

var wrapperIntro =
        ("(function (global, factory) {\n\t\t\ttypeof exports === 'object' && typeof module !== 'undefined' ? " + cjsExport + "factory(" + (cjsDeps.join( ', ' )) + ") :\n\t\t\ttypeof define === 'function' && define.amd ? define(" + amdParams + "factory) :\n\t\t\t" + globalExport + ";\n\t\t}(this, (function (" + args + ") {" + useStrict + "\n\n\t\t").replace( /^\t\t/gm, '' ).replace( /^\t/gm, magicString.getIndentString() );

// var foo__default = 'default' in foo ? foo['default'] : foo;
var interopBlock = getInteropBlock( bundle, options );
if ( interopBlock ) magicString.prepend( interopBlock + '\n\n' );

if ( intro ) magicString.prepend( intro );

var exportBlock = getExportBlock( bundle.entryModule, exportMode );
if ( exportBlock ) magicString.append( '\n\n' + exportBlock );
if ( exportMode === 'named' ) magicString.append( ("\n\n" + esModuleExport) );
if ( options.outro ) magicString.append( ("\n" + (options.outro)) );

return magicString
        .trim()
        .indent( indentString )
        .append( wrapperOutro )
        .prepend( wrapperIntro );

}

var finalisers = { amd: amd, cjs: cjs, es: es, iife: iife, umd: umd };

function ensureArray ( thing ) {

if ( Array.isArray( thing ) ) return thing;
if ( thing == undefined ) return [];
return [ thing ];

}

function load ( id ) {

return readFileSync( id, 'utf-8' );

}

function addJsExtensionIfNecessary ( file ) {

try {
        var name = path.basename( file );
        var files = readdirSync( path.dirname( file ) );

        if ( ~files.indexOf( name ) && isFile( file ) ) return file;
        if ( ~files.indexOf( (name + ".js") ) && isFile( (file + ".js") ) ) return (file + ".js");
} catch ( err ) {
        // noop
}

return null;

}

function resolveId ( importee, importer ) {

if ( typeof process === 'undefined' ) throw new Error( "It looks like you're using Rollup in a non-Node.js environment. This means you must supply a plugin with custom resolveId and load functions. See https://github.com/rollup/rollup/wiki/Plugins for more information" );

// absolute paths are left untouched
if ( isAbsolute( importee ) ) return addJsExtensionIfNecessary( path.resolve( importee ) );

// if this is the entry point, resolve against cwd
if ( importer === undefined ) return addJsExtensionIfNecessary( path.resolve( process.cwd(), importee ) );

// external modules are skipped at this stage
if ( importee[0] !== '.' ) return null;

return addJsExtensionIfNecessary( path.resolve( path.dirname( importer ), importee ) );

}

function makeOnwarn () {

var warned = blank();

return function (msg) {
        if ( msg in warned ) return;
        console.error( msg ); //eslint-disable-line no-console
        warned[ msg ] = true;
};

}

function badExports ( option, keys ) {

throw new Error( ("'" + option + "' was specified for options.exports, but entry module has following exports: " + (keys.join(', '))) );

}

function getExportMode ( bundle, ref ) {

var exportMode = ref.exports;
var moduleName = ref.moduleName;
var format = ref.format;

var exportKeys = keys( bundle.entryModule.exports )
        .concat( keys( bundle.entryModule.reexports ) )
        .concat( bundle.entryModule.exportAllSources ); // not keys, but makes our job easier this way

if ( exportMode === 'default' ) {
        if ( exportKeys.length !== 1 || exportKeys[0] !== 'default' ) {
                badExports( 'default', exportKeys );
        }
} else if ( exportMode === 'none' && exportKeys.length ) {
        badExports( 'none', exportKeys );
}

if ( !exportMode || exportMode === 'auto' ) {
        if ( exportKeys.length === 0 ) {
                exportMode = 'none';
        } else if ( exportKeys.length === 1 && exportKeys[0] === 'default' ) {
                exportMode = 'default';
        } else {
                if ( bundle.entryModule.exports.default && format !== 'es') {
                        bundle.onwarn( ("Using named and default exports together. Consumers of your bundle will have to use " + (moduleName || 'bundle') + "['default'] to access the default export, which may not be what you want. Use `exports: 'named'` to disable this warning. See https://github.com/rollup/rollup/wiki/JavaScript-API#exports for more information") );
                }
                exportMode = 'named';
        }
}

if ( !/(?:default|named|none)/.test( exportMode ) ) {
        throw new Error( "options.exports must be 'default', 'named', 'none', 'auto', or left unspecified (defaults to 'auto')" );
}

return exportMode;

}

function getIndentString ( magicString, options ) {

if ( options.indent === true ) {
        return magicString.getIndentString();
}

return options.indent || '';

}

function transform ( source, id, plugins ) {

var sourceMapChain = [];

var originalSourceMap = typeof source.map === 'string' ? JSON.parse( source.map ) : source.map;

if ( originalSourceMap && typeof originalSourceMap.mappings === 'string' ) {
        originalSourceMap.mappings = decode( originalSourceMap.mappings );
}

var originalCode = source.code;
var ast = source.ast;

return plugins.reduce( function ( promise, plugin ) {
        return promise.then( function (previous) {
                if ( !plugin.transform ) return previous;

                return Promise.resolve( plugin.transform( previous, id ) ).then( function (result) {
                        if ( result == null ) return previous;

                        if ( typeof result === 'string' ) {
                                result = {
                                        code: result,
                                        ast: null,
                                        map: null
                                };
                        }
                        // `result.map` can only be a string if `result` isn't
                        else if ( typeof result.map === 'string' ) {
                                result.map = JSON.parse( result.map );
                        }

                        if ( result.map && typeof result.map.mappings === 'string' ) {
                                result.map.mappings = decode( result.map.mappings );
                        }

                        sourceMapChain.push( result.map || { missing: true, plugin: plugin.name }); // lil' bit hacky but it works
                        ast = result.ast;

                        return result.code;
                });
        }).catch( function (err) {
                if ( !err.rollupTransform ) {
                        err.rollupTransform = true;
                        err.id = id;
                        err.plugin = plugin.name;
                        err.message = "Error transforming " + id + (plugin.name ? (" with '" + (plugin.name) + "' plugin") : '') + ": " + (err.message);
                }
                throw err;
        });
}, Promise.resolve( source.code ) )

.then( function (code) { return ({ code: code, originalCode: originalCode, originalSourceMap: originalSourceMap, ast: ast, sourceMapChain: sourceMapChain }); } );

}

function transformBundle ( code, plugins, sourceMapChain, options ) {

return plugins.reduce( function ( code, plugin ) {
        if ( !plugin.transformBundle ) return code;

        var result;

        try {
                result = plugin.transformBundle( code, { format : options.format } );
        } catch ( err ) {
                err.plugin = plugin.name;
                err.message = "Error transforming bundle" + (plugin.name ? (" with '" + (plugin.name) + "' plugin") : '') + ": " + (err.message);
                throw err;
        }

        if ( result == null ) return code;

        if ( typeof result === 'string' ) {
                result = {
                        code: result,
                        map: null
                };
        }

        var map = typeof result.map === 'string' ? JSON.parse( result.map ) : result.map;
        if ( map && typeof map.mappings === 'string' ) {
                map.mappings = decode( map.mappings );
        }

        sourceMapChain.push( map );

        return result.code;
}, code );

}

var Source = function Source ( filename, content ) {

this.isOriginal = true;
this.filename = filename;
this.content = content;

};

Source.prototype.traceSegment = function traceSegment ( line, column, name ) {

return { line: line, column: column, name: name, source: this };

};

var Link = function Link ( map, sources ) {

this.sources = sources;
this.names = map.names;
this.mappings = map.mappings;

};

Link.prototype.traceMappings = function traceMappings () {

        var this$1 = this;

var sources = [];
var sourcesContent = [];
var names = [];

var mappings = this.mappings.map( function (line) {
        var tracedLine = [];

        line.forEach( function (segment) {
                var source = this$1.sources[ segment[1] ];
                var traced = source.traceSegment( segment[2], segment[3], this$1.names[ segment[4] ] );

                if ( traced ) {
                        var sourceIndex = null;
                        var nameIndex = null;
                        segment = [
                                segment[0],
                                null,
                                traced.line,
                                traced.column
                        ];

                        // newer sources are more likely to be used, so search backwards.
                        sourceIndex = sources.lastIndexOf( traced.source.filename );
                        if ( sourceIndex === -1 ) {
                                sourceIndex = sources.length;
                                sources.push( traced.source.filename );
                                sourcesContent[ sourceIndex ] = traced.source.content;
                        } else if ( sourcesContent[ sourceIndex ] == null ) {
                                sourcesContent[ sourceIndex ] = traced.source.content;
                        } else if ( traced.source.content != null && sourcesContent[ sourceIndex ] !== traced.source.content ) {
                                throw new Error( ("Multiple conflicting contents for sourcemap source " + (source.filename)) );
                        }

                        segment[1] = sourceIndex;

                        if ( traced.name ) {
                                nameIndex = names.indexOf( traced.name );
                                if ( nameIndex === -1 ) {
                                        nameIndex = names.length;
                                        names.push( traced.name );
                                }

                                segment[4] = nameIndex;
                        }

                        tracedLine.push( segment );
                }
        });

        return tracedLine;
});

return { sources: sources, sourcesContent: sourcesContent, names: names, mappings: mappings };

};

Link.prototype.traceSegment = function traceSegment ( line, column, name ) {

        var this$1 = this;

var segments = this.mappings[ line ];

if ( !segments ) return null;

for ( var i = 0; i < segments.length; i += 1 ) {
        var segment = segments[i];

        if ( segment[0] > column ) return null;

        if ( segment[0] === column ) {
                var source = this$1.sources[ segment[1] ];
                if ( !source ) return null;

                return source.traceSegment( segment[2], segment[3], this$1.names[ segment[4] ] || name );
        }
}

return null;

};

function collapseSourcemaps ( file, map, modules, bundleSourcemapChain, onwarn ) {

var moduleSources = modules.filter( function (module) { return !module.excludeFromSourcemap; } ).map( function (module) {
        var sourceMapChain = module.sourceMapChain;

        var source;
        if ( module.originalSourceMap == null ) {
                source = new Source( module.id, module.originalCode );
        } else {
                var sources = module.originalSourceMap.sources;
                var sourcesContent = module.originalSourceMap.sourcesContent || [];

                if ( sources == null || ( sources.length <= 1 && sources[0] == null ) ) {
                        source = new Source( module.id, sourcesContent[0] );
                        sourceMapChain = [ module.originalSourceMap ].concat( sourceMapChain );
                } else {
                        // TODO indiscriminately treating IDs and sources as normal paths is probably bad.
                        var directory = path.dirname( module.id ) || '.';
                        var sourceRoot = module.originalSourceMap.sourceRoot || '.';

                        var baseSources = sources.map( function (source, i) {
                                return new Source( path.resolve( directory, sourceRoot, source ), sourcesContent[i] );
                        });

                        source = new Link( module.originalSourceMap, baseSources );
                }
        }

        sourceMapChain.forEach( function (map) {
                if ( map.missing ) {
                        onwarn( ("Sourcemap is likely to be incorrect: a plugin" + (map.plugin ? (" ('" + (map.plugin) + "')") : "") + " was used to transform files, but didn't generate a sourcemap for the transformation. Consult https://github.com/rollup/rollup/wiki/Troubleshooting and the plugin documentation for more information") );

                        map = {
                                names: [],
                                mappings: ''
                        };
                }

                source = new Link( map, [ source ]);
        });

        return source;
});

var source = new Link( map, moduleSources );

bundleSourcemapChain.forEach( function (map) {
        source = new Link( map, [ source ] );
});

var ref = source.traceMappings();
var sources = ref.sources;
var sourcesContent = ref.sourcesContent;
var names = ref.names;
var mappings = ref.mappings;

if ( file ) {
        var directory = path.dirname( file );
        sources = sources.map( function (source) { return path.relative( directory, source ); } );
}

// we re-use the `map` object because it has convenient toString/toURL methods
map.sources = sources;
map.sourcesContent = sourcesContent;
map.names = names;
map.mappings = encode( mappings );

return map;

}

function callIfFunction ( thing ) {

return typeof thing === 'function' ? thing() : thing;

}

var SyntheticGlobalDeclaration = function SyntheticGlobalDeclaration ( name ) {

this.name = name;
this.isExternal = true;
this.isGlobal = true;
this.isReassigned = false;

this.activated = true;

};

SyntheticGlobalDeclaration.prototype.activate = function activate () {

/* noop */

};

SyntheticGlobalDeclaration.prototype.addReference = function addReference ( reference ) {

reference.declaration = this;
if ( reference.isReassignment ) this.isReassigned = true;

};

SyntheticGlobalDeclaration.prototype.gatherPossibleValues = function gatherPossibleValues ( values ) {

values.add( UNKNOWN );

};

SyntheticGlobalDeclaration.prototype.getName = function getName () {

return this.name;

};

var BundleScope = (function (Scope) {

function BundleScope () {
        Scope.apply(this, arguments);
}

if ( Scope ) BundleScope.__proto__ = Scope;
BundleScope.prototype = Object.create( Scope && Scope.prototype );
BundleScope.prototype.constructor = BundleScope;

BundleScope.prototype.findDeclaration = function findDeclaration ( name ) {
        if ( !this.declarations[ name ] ) {
                this.declarations[ name ] = new SyntheticGlobalDeclaration( name );
        }

        return this.declarations[ name ];
};

return BundleScope;

}(Scope));

var Bundle = function Bundle ( options ) {

var this$1 = this;

this.cachedModules = new Map();
if ( options.cache ) {
        options.cache.modules.forEach( function (module) {
                this$1.cachedModules.set( module.id, module );
        });
}

this.plugins = ensureArray( options.plugins );

options = this.plugins.reduce( function ( acc, plugin ) {
        if ( plugin.options ) return plugin.options( acc ) || acc;
        return acc;
}, options);

this.entry = options.entry;
this.entryId = null;
this.entryModule = null;

this.treeshake = options.treeshake !== false;

this.resolveId = first(
        [ function (id) { return this$1.isExternal( id ) ? false : null; } ]
                .concat( this.plugins.map( function (plugin) { return plugin.resolveId; } ).filter( Boolean ) )
                .concat( resolveId )
);

var loaders = this.plugins
        .map( function (plugin) { return plugin.load; } )
        .filter( Boolean );
this.hasLoaders = loaders.length !== 0;
this.load = first( loaders.concat( load ) );

this.getPath = typeof options.paths === 'function' ?
        ( function (id) { return options.paths( id ) || this$1.getPathRelativeToEntryDirname( id ); } ) :
        options.paths ?
                ( function (id) { return options.paths.hasOwnProperty( id ) ? options.paths[ id ] : this$1.getPathRelativeToEntryDirname( id ); } ) :
                function (id) { return this$1.getPathRelativeToEntryDirname( id ); };

this.scope = new BundleScope();
// TODO strictly speaking, this only applies with non-ES6, non-default-only bundles
[ 'module', 'exports', '_interopDefault' ].forEach( function (name) {
        this$1.scope.findDeclaration( name ); // creates global declaration as side-effect
});

this.moduleById = new Map();
this.modules = [];
this.externalModules = [];

this.context = String( options.context );

if ( typeof options.moduleContext === 'function' ) {
        this.getModuleContext = function (id) { return options.moduleContext( id ) || this$1.context; };
} else if ( typeof options.moduleContext === 'object' ) {
        var moduleContext = new Map();
        Object.keys( options.moduleContext ).forEach( function (key) {
                moduleContext.set( path.resolve( key ), options.moduleContext[ key ] );
        });
        this.getModuleContext = function (id) { return moduleContext.get( id ) || this$1.context; };
} else {
        this.getModuleContext = function () { return this$1.context; };
}

if ( typeof options.external === 'function' ) {
        this.isExternal = options.external;
} else {
        var ids = ensureArray( options.external );
        this.isExternal = function (id) { return ids.indexOf( id ) !== -1; };
}

this.onwarn = options.onwarn || makeOnwarn();

this.varOrConst = options.preferConst ? 'const' : 'var';
this.legacy = options.legacy;
this.acornOptions = options.acorn || {};

this.dependentExpressions = [];

};

Bundle.prototype.build = function build () {

        var this$1 = this;

// Phase 1 – discovery. We load the entry module and find which
// modules it imports, and import those, until we have all
// of the entry module's dependencies
return this.resolveId( this.entry, undefined )
        .then( function (id) {
                if ( id == null ) throw new Error( ("Could not resolve entry (" + (this$1.entry) + ")") );
                this$1.entryId = id;
                return this$1.fetchModule( id, undefined );
        })
        .then( function (entryModule) {
                this$1.entryModule = entryModule;

                // Phase 2 – binding. We link references to their declarations
                // to generate a complete picture of the bundle

                timeStart( 'phase 2' );

                this$1.modules.forEach( function (module) { return module.bindImportSpecifiers(); } );
                this$1.modules.forEach( function (module) { return module.bindReferences(); } );

                timeEnd( 'phase 2' );

                // Phase 3 – marking. We 'run' each statement to see which ones
                // need to be included in the generated bundle

                timeStart( 'phase 3' );

                // mark all export statements
                entryModule.getExports().forEach( function (name) {
                        var declaration = entryModule.traceExport( name );

                        declaration.exportName = name;
                        declaration.activate();

                        if ( declaration.isNamespace ) {
                                declaration.needsNamespaceBlock = true;
                        }
                });

                // mark statements that should appear in the bundle
                if ( this$1.treeshake ) {
                        this$1.modules.forEach( function (module) {
                                module.run();
                        });

                        var settled = false;
                        while ( !settled ) {
                                settled = true;

                                var i = this$1.dependentExpressions.length;
                                while ( i-- ) {
                                        var expression = this$1.dependentExpressions[i];

                                        var statement = expression;
                                        while ( statement.parent && !/Function/.test( statement.parent.type ) ) statement = statement.parent;

                                        if ( !statement || statement.ran ) {
                                                this$1.dependentExpressions.splice( i, 1 );
                                        } else if ( expression.isUsedByBundle() ) {
                                                settled = false;
                                                statement.run( statement.findScope() );
                                                this$1.dependentExpressions.splice( i, 1 );
                                        }
                                }
                        }
                }

                timeEnd( 'phase 3' );

                // Phase 4 – final preparation. We order the modules with an
                // enhanced topological sort that accounts for cycles, then
                // ensure that names are deconflicted throughout the bundle

                timeStart( 'phase 4' );

                this$1.orderedModules = this$1.sort();
                this$1.deconflict();

                timeEnd( 'phase 4' );
        });

};

Bundle.prototype.deconflict = function deconflict () {

var used = blank();

// ensure no conflicts with globals
keys( this.scope.declarations ).forEach( function (name) { return used[ name ] = 1; } );

function getSafeName ( name ) {
        while ( used[ name ] ) {
                name += "$" + (used[name]++);
        }

        used[ name ] = 1;
        return name;
}

var toDeshadow = new Map();

this.externalModules.forEach( function (module) {
        var safeName = getSafeName( module.name );
        toDeshadow.set( safeName, true );
        module.name = safeName;

        // ensure we don't shadow named external imports, if
        // we're creating an ES6 bundle
        forOwn( module.declarations, function ( declaration, name ) {
                var safeName = getSafeName( name );
                toDeshadow.set( safeName, true );
                declaration.setSafeName( safeName );
        });
});

this.modules.forEach( function (module) {
        forOwn( module.scope.declarations, function ( declaration ) {
                if ( declaration.isDefault && declaration.declaration.id ) {
                        return;
                }

                declaration.name = getSafeName( declaration.name );
        });

        // deconflict reified namespaces
        var namespace = module.namespace();
        if ( namespace.needsNamespaceBlock ) {
                namespace.name = getSafeName( namespace.name );
        }
});

this.scope.deshadow( toDeshadow );

};

Bundle.prototype.fetchModule = function fetchModule ( id, importer ) {

        var this$1 = this;

// short-circuit cycles
if ( this.moduleById.has( id ) ) return null;
this.moduleById.set( id, null );

return this.load( id )
        .catch( function (err) {
                var msg = "Could not load " + id;
                if ( importer ) msg += " (imported by " + importer + ")";

                msg += ": " + (err.message);
                throw new Error( msg );
        })
        .then( function (source) {
                if ( typeof source === 'string' ) return source;
                if ( source && typeof source === 'object' && source.code ) return source;

                throw new Error( ("Error loading " + id + ": load hook should return a string, a { code, map } object, or nothing/null") );
        })
        .then( function (source) {
                if ( typeof source === 'string' ) {
                        source = {
                                code: source,
                                ast: null
                        };
                }

                if ( this$1.cachedModules.has( id ) && this$1.cachedModules.get( id ).originalCode === source.code ) {
                        return this$1.cachedModules.get( id );
                }

                return transform( source, id, this$1.plugins );
        })
        .then( function (source) {
                var code = source.code;
                        var originalCode = source.originalCode;
                        var originalSourceMap = source.originalSourceMap;
                        var ast = source.ast;
                        var sourceMapChain = source.sourceMapChain;
                        var resolvedIds = source.resolvedIds;

                var module = new Module({
                        id: id,
                        code: code,
                        originalCode: originalCode,
                        originalSourceMap: originalSourceMap,
                        ast: ast,
                        sourceMapChain: sourceMapChain,
                        resolvedIds: resolvedIds,
                        bundle: this$1
                });

                this$1.modules.push( module );
                this$1.moduleById.set( id, module );

                return this$1.fetchAllDependencies( module ).then( function () {
                        keys( module.exports ).forEach( function (name) {
                                module.exportsAll[name] = module.id;
                        });
                        module.exportAllSources.forEach( function (source) {
                                var id = module.resolvedIds[ source ];
                                var exportAllModule = this$1.moduleById.get( id );
                                if ( exportAllModule.isExternal ) return;

                                keys( exportAllModule.exportsAll ).forEach( function (name) {
                                        if ( name in module.exportsAll ) {
                                                this$1.onwarn( ("Conflicting namespaces: " + (module.id) + " re-exports '" + name + "' from both " + (module.exportsAll[ name ]) + " (will be ignored) and " + (exportAllModule.exportsAll[ name ]) + ".") );
                                        }
                                        module.exportsAll[ name ] = exportAllModule.exportsAll[ name ];
                                });
                        });
                        return module;
                });
        });

};

Bundle.prototype.fetchAllDependencies = function fetchAllDependencies ( module ) {

        var this$1 = this;

return mapSequence( module.sources, function (source) {
        var resolvedId = module.resolvedIds[ source ];
        return ( resolvedId ? Promise.resolve( resolvedId ) : this$1.resolveId( source, module.id ) )
                .then( function (resolvedId) {
                        var externalId = resolvedId || (
                                isRelative( source ) ? path.resolve( module.id, '..', source ) : source
                        );

                        var isExternal = this$1.isExternal( externalId );

                        if ( !resolvedId && !isExternal ) {
                                if ( isRelative( source ) ) throw new Error( ("Could not resolve '" + source + "' from " + (module.id)) );

                                this$1.onwarn( ("Treating '" + source + "' as external dependency") );
                                isExternal = true;
                        }

                        if ( isExternal ) {
                                module.resolvedIds[ source ] = externalId;

                                if ( !this$1.moduleById.has( externalId ) ) {
                                        var module$1 = new ExternalModule( externalId, this$1.getPath( externalId ) );
                                        this$1.externalModules.push( module$1 );
                                        this$1.moduleById.set( externalId, module$1 );
                                }
                        } else {
                                if ( resolvedId === module.id ) {
                                        throw new Error( ("A module cannot import itself (" + resolvedId + ")") );
                                }

                                module.resolvedIds[ source ] = resolvedId;
                                return this$1.fetchModule( resolvedId, module.id );
                        }
                });
});

};

Bundle.prototype.getPathRelativeToEntryDirname = function getPathRelativeToEntryDirname ( resolvedId ) {

if ( isRelative( resolvedId ) || isAbsolute( resolvedId ) ) {
        var entryDirname = path.dirname( this.entryId );
        var relativeToEntry = normalize( path.relative( entryDirname, resolvedId ) );

        return isRelative( relativeToEntry ) ? relativeToEntry : ("./" + relativeToEntry);
}

return resolvedId;

};

Bundle.prototype.render = function render ( options ) {

        var this$1 = this;
        if ( options === void 0 ) options = {};

if ( options.format === 'es6' ) {
        this.onwarn( 'The es6 format is deprecated – use `es` instead' );
        options.format = 'es';
}

var format = options.format || 'es';

// Determine export mode - 'default', 'named', 'none'
var exportMode = getExportMode( this, options );

var magicString = new Bundle$1({ separator: '\n\n' });
var usedModules = [];

timeStart( 'render modules' );

this.orderedModules.forEach( function (module) {
        var source = module.render( format === 'es', this$1.legacy );

        if ( source.toString().length ) {
                magicString.addSource( source );
                usedModules.push( module );
        }
});

timeEnd( 'render modules' );

var intro = [ options.intro ]
        .concat(
                this.plugins.map( function (plugin) { return plugin.intro && plugin.intro(); } )
        )
        .filter( Boolean )
        .join( '\n\n' );

if ( intro ) intro += '\n';

var indentString = getIndentString( magicString, options );

var finalise = finalisers[ format ];
if ( !finalise ) throw new Error( ("You must specify an output type - valid options are " + (keys( finalisers ).join( ', ' ))) );

timeStart( 'render format' );

magicString = finalise( this, magicString.trim(), { exportMode: exportMode, indentString: indentString, intro: intro }, options );

timeEnd( 'render format' );

var banner = [ options.banner ]
        .concat( this.plugins.map( function (plugin) { return plugin.banner; } ) )
        .map( callIfFunction )
        .filter( Boolean )
        .join( '\n' );

var footer = [ options.footer ]
        .concat( this.plugins.map( function (plugin) { return plugin.footer; } ) )
        .map( callIfFunction )
        .filter( Boolean )
        .join( '\n' );

if ( banner ) magicString.prepend( banner + '\n' );
if ( footer ) magicString.append( '\n' + footer );

var code = magicString.toString();
var map = null;
var bundleSourcemapChain = [];

code = transformBundle( code, this.plugins, bundleSourcemapChain, options )
        .replace( new RegExp( ("\\/\\/#\\s+" + SOURCEMAPPING_URL$1 + "=.+\\n?"), 'g' ), '' );

if ( options.sourceMap ) {
        timeStart( 'sourceMap' );

        var file = options.sourceMapFile || options.dest;
        if ( file ) file = path.resolve( typeof process !== 'undefined' ? process.cwd() : '', file );

        if ( this.hasLoaders || find( this.plugins, function (plugin) { return plugin.transform || plugin.transformBundle; } ) ) {
                map = magicString.generateMap( {} );
                if ( typeof map.mappings === 'string' ) {
                        map.mappings = decode( map.mappings );
                }
                map = collapseSourcemaps( file, map, usedModules, bundleSourcemapChain, this.onwarn );
        } else {
                map = magicString.generateMap({ file: file, includeContent: true });
        }

        map.sources = map.sources.map( normalize );

        timeEnd( 'sourceMap' );
}

if ( code[ code.length - 1 ] !== '\n' ) code += '\n';
return { code: code, map: map };

};

Bundle.prototype.sort = function sort () {
        var this$1 = this;

var hasCycles;
var seen = {};
var ordered = [];

var stronglyDependsOn = blank();
var dependsOn = blank();

this.modules.forEach( function (module) {
        stronglyDependsOn[ module.id ] = blank();
        dependsOn[ module.id ] = blank();
});

this.modules.forEach( function (module) {
        function processStrongDependency ( dependency ) {
                if ( dependency === module || stronglyDependsOn[ module.id ][ dependency.id ] ) return;

                stronglyDependsOn[ module.id ][ dependency.id ] = true;
                dependency.strongDependencies.forEach( processStrongDependency );
        }

        function processDependency ( dependency ) {
                if ( dependency === module || dependsOn[ module.id ][ dependency.id ] ) return;

                dependsOn[ module.id ][ dependency.id ] = true;
                dependency.dependencies.forEach( processDependency );
        }

        module.strongDependencies.forEach( processStrongDependency );
        module.dependencies.forEach( processDependency );
});

var visit = function (module) {
        if ( seen[ module.id ] ) {
                hasCycles = true;
                return;
        }

        seen[ module.id ] = true;

        module.dependencies.forEach( visit );
        ordered.push( module );
};

visit( this.entryModule );

if ( hasCycles ) {
        ordered.forEach( function ( a, i ) {
                var loop = function (  ) {
                        var b = ordered[i];

                        if ( stronglyDependsOn[ a.id ][ b.id ] ) {
                                // somewhere, there is a module that imports b before a. Because
                                // b imports a, a is placed before b. We need to find the module
                                // in question, so we can provide a useful error message
                                var parent = '[[unknown]]';
                                var visited = {};

                                var findParent = function (module) {
                                        if ( dependsOn[ module.id ][ a.id ] && dependsOn[ module.id ][ b.id ] ) {
                                                parent = module.id;
                                                return true;
                                        }
                                        visited[ module.id ] = true;
                                        for ( var i = 0; i < module.dependencies.length; i += 1 ) {
                                                var dependency = module.dependencies[i];
                                                if ( !visited[ dependency.id ] && findParent( dependency ) ) return true;
                                        }
                                };

                                findParent( this$1.entryModule );

                                this$1.onwarn(
                                        ("Module " + (a.id) + " may be unable to evaluate without " + (b.id) + ", but is included first due to a cyclical dependency. Consider swapping the import statements in " + parent + " to ensure correct ordering")
                                );
                        }
                };

                        for ( i += 1; i < ordered.length; i += 1 ) loop(  );
        });
}

return ordered;

};

var VERSION = '0.36.3';

var ALLOWED_KEYS = [

'acorn',
'banner',
'cache',
'context',
'dest',
'entry',
'exports',
'external',
'footer',
'format',
'globals',
'indent',
'interop',
'intro',
'legacy',
'moduleContext',
'moduleId',
'moduleName',
'noConflict',
'onwarn',
'outro',
'paths',
'plugins',
'preferConst',
'sourceMap',
'sourceMapFile',
'targets',
'treeshake',
'useStrict'

];

function checkOptions ( options ) {

if ( !options || !options.entry ) {
        return new Error( 'You must supply options.entry to rollup' );
}

if ( options.transform || options.load || options.resolveId || options.resolveExternal ) {
        return new Error( 'The `transform`, `load`, `resolveId` and `resolveExternal` options are deprecated in favour of a unified plugin API. See https://github.com/rollup/rollup/wiki/Plugins for details' );
}

var error = validateKeys( keys(options), ALLOWED_KEYS );
if ( error ) return error;

return null;

}

function rollup ( options ) {

var error = checkOptions ( options );
if ( error ) return Promise.reject( error );

var bundle = new Bundle( options );

timeStart( '--BUILD--' );

return bundle.build().then( function () {
        timeEnd( '--BUILD--' );

        function generate ( options ) {
                timeStart( '--GENERATE--' );

                var rendered = bundle.render( options );

                timeEnd( '--GENERATE--' );

                bundle.plugins.forEach( function (plugin) {
                        if ( plugin.ongenerate ) {
                                plugin.ongenerate( assign({
                                        bundle: result
                                }, options ), rendered);
                        }
                });

                flushTime();

                return rendered;
        }

        var result = {
                imports: bundle.externalModules.map( function (module) { return module.id; } ),
                exports: keys( bundle.entryModule.exports ),
                modules: bundle.orderedModules.map( function (module) { return module.toJSON(); } ),

                generate: generate,
                write: function (options) {
                        if ( !options || !options.dest ) {
                                throw new Error( 'You must supply options.dest to bundle.write' );
                        }

                        var dest = options.dest;
                        var output = generate( options );
                        var code = output.code;
                        var map = output.map;

                        var promises = [];

                        if ( options.sourceMap ) {
                                var url;

                                if ( options.sourceMap === 'inline' ) {
                                        url = map.toUrl();
                                } else {
                                        url = (path.basename( dest )) + ".map";
                                        promises.push( writeFile( dest + '.map', map.toString() ) );
                                }

                                code += "//# " + SOURCEMAPPING_URL$1 + "=" + url + "\n";
                        }

                        promises.push( writeFile( dest, code ) );
                        return Promise.all( promises ).then( function () {
                                return mapSequence( bundle.plugins.filter( function (plugin) { return plugin.onwrite; } ), function (plugin) {
                                        return Promise.resolve( plugin.onwrite( assign({
                                                bundle: result
                                        }, options ), output));
                                });
                        });
                }
        };

        return result;
});

}

exports.VERSION = VERSION; exports.rollup = rollup; //# sourceMappingURL=rollup.js.map

rollup({entry: process.argv}).then(bundle => {

var result = bundle.generate({format: 'iife', sourceMap: true});
console.log(JSON.stringify({
  code: result.code,
  dependencies: result.map.sources
}));

}).catch(e => {

console.log(e.stack);
process.exit(1);

});