import { defaultOptions, addLooseExports, SourceLocation, tokTypes, tokenizer, Node, lineBreak, isNewLine, getLineInfo, Token, lineBreakG } from './acorn';

// Registered plugins var pluginsLoose = {}

var LooseParser = function LooseParser(input, options) {

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

this.toks = tokenizer(input, options)
this.options = this.toks.options
this.input = this.toks.input
this.tok = this.last = {type: tokTypes.eof, start: 0, end: 0}
if (this.options.locations) {
  var here = this.toks.curPosition()
  this.tok.loc = new SourceLocation(this.toks, here, here)
}
this.ahead = [] // Tokens ahead
this.context = [] // Indentation contexted
this.curIndent = 0
this.curLineStart = 0
this.nextLineStart = this.lineEnd(this.curLineStart) + 1
this.inAsync = false
// Load plugins
this.options.pluginsLoose = options.pluginsLoose || {}
this.loadPlugins(this.options.pluginsLoose)

};

LooseParser.prototype.startNode = function startNode () {

return new Node(this.toks, this.tok.start, this.options.locations ? this.tok.loc.start : null)

};

LooseParser.prototype.storeCurrentPos = function storeCurrentPos () {

return this.options.locations ? [this.tok.start, this.tok.loc.start] : this.tok.start

};

LooseParser.prototype.startNodeAt = function startNodeAt (pos) {

if (this.options.locations) {
  return new Node(this.toks, pos[0], pos[1])
} else {
  return new Node(this.toks, pos)
}

};

LooseParser.prototype.finishNode = function finishNode (node, type) {

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

};

LooseParser.prototype.dummyNode = function dummyNode (type) {

var dummy = this.startNode()
dummy.type = type
dummy.end = dummy.start
if (this.options.locations)
  dummy.loc.end = dummy.loc.start
if (this.options.ranges)
  dummy.range[1] = dummy.start
this.last = {type: tokTypes.name, start: dummy.start, end: dummy.start, loc: dummy.loc}
return dummy

};

LooseParser.prototype.dummyIdent = function dummyIdent () {

var dummy = this.dummyNode("Identifier")
dummy.name = "✖"
return dummy

};

LooseParser.prototype.dummyString = function dummyString () {

var dummy = this.dummyNode("Literal")
dummy.value = dummy.raw = "✖"
return dummy

};

LooseParser.prototype.eat = function eat (type) {

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

};

LooseParser.prototype.isContextual = function isContextual (name) {

return this.tok.type === tokTypes.name && this.tok.value === name

};

LooseParser.prototype.eatContextual = function eatContextual (name) {

return this.tok.value === name && this.eat(tokTypes.name)

};

LooseParser.prototype.canInsertSemicolon = function canInsertSemicolon () {

return this.tok.type === tokTypes.eof || this.tok.type === tokTypes.braceR ||
  lineBreak.test(this.input.slice(this.last.end, this.tok.start))

};

LooseParser.prototype.semicolon = function semicolon () {

return this.eat(tokTypes.semi)

};

LooseParser.prototype.expect = function expect (type) {

  var this$1 = this;

if (this.eat(type)) return true
for (var i = 1; i <= 2; i++) {
  if (this$1.lookAhead(i).type == type) {
    for (var j = 0; j < i; j++) this$1.next()
    return true
  }
}

};

LooseParser.prototype.pushCx = function pushCx () {

this.context.push(this.curIndent)

};

LooseParser.prototype.popCx = function popCx () {

this.curIndent = this.context.pop()

};

LooseParser.prototype.lineEnd = function lineEnd (pos) {

while (pos < this.input.length && !isNewLine(this.input.charCodeAt(pos))) ++pos
return pos

};

LooseParser.prototype.indentationAfter = function indentationAfter (pos) {

  var this$1 = this;

for (var count = 0;; ++pos) {
  var ch = this$1.input.charCodeAt(pos)
  if (ch === 32) ++count
  else if (ch === 9) count += this$1.options.tabSize
  else return count
}

};

LooseParser.prototype.closes = function closes (closeTok, indent, line, blockHeuristic) {

if (this.tok.type === closeTok || this.tok.type === tokTypes.eof) return true
return line != this.curLineStart && this.curIndent < indent && this.tokenStartsLine() &&
  (!blockHeuristic || this.nextLineStart >= this.input.length ||
   this.indentationAfter(this.nextLineStart) < indent)

};

LooseParser.prototype.tokenStartsLine = function tokenStartsLine () {

  var this$1 = this;

for (var p = this.tok.start - 1; p >= this.curLineStart; --p) {
  var ch = this$1.input.charCodeAt(p)
  if (ch !== 9 && ch !== 32) return false
}
return true

};

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

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

};

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

  var this$1 = this;

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

};

var lp = LooseParser.prototype

function isSpace(ch) {

return (ch < 14 && ch > 8) || ch === 32 || ch === 160 || isNewLine(ch)

}

lp.next = function() {

var this$1 = this;

this.last = this.tok
if (this.ahead.length)
  this.tok = this.ahead.shift()
else
  this.tok = this.readToken()

if (this.tok.start >= this.nextLineStart) {
  while (this.tok.start >= this.nextLineStart) {
    this$1.curLineStart = this$1.nextLineStart
    this$1.nextLineStart = this$1.lineEnd(this$1.curLineStart) + 1
  }
  this.curIndent = this.indentationAfter(this.curLineStart)
}

}

lp.readToken = function() {

var this$1 = this;

for (;;) {
  try {
    this$1.toks.next()
    if (this$1.toks.type === tokTypes.dot &&
        this$1.input.substr(this$1.toks.end, 1) === "." &&
        this$1.options.ecmaVersion >= 6) {
      this$1.toks.end++
      this$1.toks.type = tokTypes.ellipsis
    }
    return new Token(this$1.toks)
  } catch(e) {
    if (!(e instanceof SyntaxError)) throw e

    // Try to skip some text, based on the error message, and then continue
    var msg = e.message, pos = e.raisedAt, replace = true
    if (/unterminated/i.test(msg)) {
      pos = this$1.lineEnd(e.pos + 1)
      if (/string/.test(msg)) {
        replace = {start: e.pos, end: pos, type: tokTypes.string, value: this$1.input.slice(e.pos + 1, pos)}
      } else if (/regular expr/i.test(msg)) {
        var re = this$1.input.slice(e.pos, pos)
        try { re = new RegExp(re) } catch(e) {}
        replace = {start: e.pos, end: pos, type: tokTypes.regexp, value: re}
      } else if (/template/.test(msg)) {
        replace = {start: e.pos, end: pos,
                   type: tokTypes.template,
                   value: this$1.input.slice(e.pos, pos)}
      } else {
        replace = false
      }
    } else if (/invalid (unicode|regexp|number)|expecting unicode|octal literal|is reserved|directly after number|expected number in radix/i.test(msg)) {
      while (pos < this.input.length && !isSpace(this.input.charCodeAt(pos))) ++pos
    } else if (/character escape|expected hexadecimal/i.test(msg)) {
      while (pos < this.input.length) {
        var ch = this$1.input.charCodeAt(pos++)
        if (ch === 34 || ch === 39 || isNewLine(ch)) break
      }
    } else if (/unexpected character/i.test(msg)) {
      pos++
      replace = false
    } else if (/regular expression/i.test(msg)) {
      replace = true
    } else {
      throw e
    }
    this$1.resetTo(pos)
    if (replace === true) replace = {start: pos, end: pos, type: tokTypes.name, value: "✖"}
    if (replace) {
      if (this$1.options.locations)
        replace.loc = new SourceLocation(
          this$1.toks,
          getLineInfo(this$1.input, replace.start),
          getLineInfo(this$1.input, replace.end))
      return replace
    }
  }
}

}

lp.resetTo = function(pos) {

var this$1 = this;

this.toks.pos = pos
var ch = this.input.charAt(pos - 1)
this.toks.exprAllowed = !ch || /[\[\{\(,;:?\/*=+\-~!|&%^<>]/.test(ch) ||
  /[enwfd]/.test(ch) &&
  /\b(keywords|case|else|return|throw|new|in|(instance|type)of|delete|void)$/.test(this.input.slice(pos - 10, pos))

if (this.options.locations) {
  this.toks.curLine = 1
  this.toks.lineStart = lineBreakG.lastIndex = 0
  var match
  while ((match = lineBreakG.exec(this.input)) && match.index < pos) {
    ++this$1.toks.curLine
    this$1.toks.lineStart = match.index + match[0].length
  }
}

}

lp.lookAhead = function(n) {

var this$1 = this;

while (n > this.ahead.length)
  this$1.ahead.push(this$1.readToken())
return this.ahead[n - 1]

}

function isDummy(node) { return node.name == “✖” }

var lp$1 = LooseParser.prototype

lp$1.parseTopLevel = function() {

var this$1 = this;

var node = this.startNodeAt(this.options.locations ? [0, getLineInfo(this.input, 0)] : 0)
node.body = []
while (this.tok.type !== tokTypes.eof) node.body.push(this$1.parseStatement())
this.last = this.tok
if (this.options.ecmaVersion >= 6) {
  node.sourceType = this.options.sourceType
}
return this.finishNode(node, "Program")

}

lp$1.parseStatement = function() {

var this$1 = this;

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

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

switch (starttype) {
case tokTypes._break: case tokTypes._continue:
  this.next()
  var isBreak = starttype === tokTypes._break
  if (this.semicolon() || this.canInsertSemicolon()) {
    node.label = null
  } else {
    node.label = this.tok.type === tokTypes.name ? this.parseIdent() : null
    this.semicolon()
  }
  return this.finishNode(node, isBreak ? "BreakStatement" : "ContinueStatement")

case tokTypes._debugger:
  this.next()
  this.semicolon()
  return this.finishNode(node, "DebuggerStatement")

case tokTypes._do:
  this.next()
  node.body = this.parseStatement()
  node.test = this.eat(tokTypes._while) ? this.parseParenExpression() : this.dummyIdent()
  this.semicolon()
  return this.finishNode(node, "DoWhileStatement")

case tokTypes._for:
  this.next()
  this.pushCx()
  this.expect(tokTypes.parenL)
  if (this.tok.type === tokTypes.semi) return this.parseFor(node, null)
  var isLet = this.toks.isLet()
  if (isLet || this.tok.type === tokTypes._var || this.tok.type === tokTypes._const) {
    var init$1 = this.parseVar(true, isLet ? "let" : this.tok.value)
    if (init$1.declarations.length === 1 && (this.tok.type === tokTypes._in || this.isContextual("of"))) {
      return this.parseForIn(node, init$1)
    }
    return this.parseFor(node, init$1)
  }
  var init = this.parseExpression(true)
  if (this.tok.type === tokTypes._in || this.isContextual("of"))
    return this.parseForIn(node, this.toAssignable(init))
  return this.parseFor(node, init)

case tokTypes._function:
  this.next()
  return this.parseFunction(node, true)

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

case tokTypes._return:
  this.next()
  if (this.eat(tokTypes.semi) || this.canInsertSemicolon()) node.argument = null
  else { node.argument = this.parseExpression(); this.semicolon() }
  return this.finishNode(node, "ReturnStatement")

case tokTypes._switch:
  var blockIndent = this.curIndent, line = this.curLineStart
  this.next()
  node.discriminant = this.parseParenExpression()
  node.cases = []
  this.pushCx()
  this.expect(tokTypes.braceL)

  var cur
  while (!this.closes(tokTypes.braceR, blockIndent, line, true)) {
    if (this$1.tok.type === tokTypes._case || this$1.tok.type === tokTypes._default) {
      var isCase = this$1.tok.type === tokTypes._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 cur.test = null
      this$1.expect(tokTypes.colon)
    } else {
      if (!cur) {
        node.cases.push(cur = this$1.startNode())
        cur.consequent = []
        cur.test = null
      }
      cur.consequent.push(this$1.parseStatement())
    }
  }
  if (cur) this.finishNode(cur, "SwitchCase")
  this.popCx()
  this.eat(tokTypes.braceR)
  return this.finishNode(node, "SwitchStatement")

case tokTypes._throw:
  this.next()
  node.argument = this.parseExpression()
  this.semicolon()
  return this.finishNode(node, "ThrowStatement")

case tokTypes._try:
  this.next()
  node.block = this.parseBlock()
  node.handler = null
  if (this.tok.type === tokTypes._catch) {
    var clause = this.startNode()
    this.next()
    this.expect(tokTypes.parenL)
    clause.param = this.toAssignable(this.parseExprAtom(), true)
    this.expect(tokTypes.parenR)
    clause.body = this.parseBlock()
    node.handler = this.finishNode(clause, "CatchClause")
  }
  node.finalizer = this.eat(tokTypes._finally) ? this.parseBlock() : null
  if (!node.handler && !node.finalizer) return node.block
  return this.finishNode(node, "TryStatement")

case tokTypes._var:
case tokTypes._const:
  return this.parseVar(false, kind || this.tok.value)

case tokTypes._while:
  this.next()
  node.test = this.parseParenExpression()
  node.body = this.parseStatement()
  return this.finishNode(node, "WhileStatement")

case tokTypes._with:
  this.next()
  node.object = this.parseParenExpression()
  node.body = this.parseStatement()
  return this.finishNode(node, "WithStatement")

case tokTypes.braceL:
  return this.parseBlock()

case tokTypes.semi:
  this.next()
  return this.finishNode(node, "EmptyStatement")

case tokTypes._class:
  return this.parseClass(true)

case tokTypes._import:
  return this.parseImport()

case tokTypes._export:
  return this.parseExport()

default:
  if (this.toks.isAsyncFunction()) {
    this.next()
    this.next()
    return this.parseFunction(node, true, true)
  }
  var expr = this.parseExpression()
  if (isDummy(expr)) {
    this.next()
    if (this.tok.type === tokTypes.eof) return this.finishNode(node, "EmptyStatement")
    return this.parseStatement()
  } else if (starttype === tokTypes.name && expr.type === "Identifier" && this.eat(tokTypes.colon)) {
    node.body = this.parseStatement()
    node.label = expr
    return this.finishNode(node, "LabeledStatement")
  } else {
    node.expression = expr
    this.semicolon()
    return this.finishNode(node, "ExpressionStatement")
  }
}

}

lp$1.parseBlock = function() {

var this$1 = this;

var node = this.startNode()
this.pushCx()
this.expect(tokTypes.braceL)
var blockIndent = this.curIndent, line = this.curLineStart
node.body = []
while (!this.closes(tokTypes.braceR, blockIndent, line, true))
  node.body.push(this$1.parseStatement())
this.popCx()
this.eat(tokTypes.braceR)
return this.finishNode(node, "BlockStatement")

}

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

node.init = init
node.test = node.update = null
if (this.eat(tokTypes.semi) && this.tok.type !== tokTypes.semi) node.test = this.parseExpression()
if (this.eat(tokTypes.semi) && this.tok.type !== tokTypes.parenR) node.update = this.parseExpression()
this.popCx()
this.expect(tokTypes.parenR)
node.body = this.parseStatement()
return this.finishNode(node, "ForStatement")

}

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

var type = this.tok.type === tokTypes._in ? "ForInStatement" : "ForOfStatement"
this.next()
node.left = init
node.right = this.parseExpression()
this.popCx()
this.expect(tokTypes.parenR)
node.body = this.parseStatement()
return this.finishNode(node, type)

}

lp$1.parseVar = function(noIn, kind) {

var this$1 = this;

var node = this.startNode()
node.kind = kind
this.next()
node.declarations = []
do {
  var decl = this$1.startNode()
  decl.id = this$1.options.ecmaVersion >= 6 ? this$1.toAssignable(this$1.parseExprAtom(), true) : this$1.parseIdent()
  decl.init = this$1.eat(tokTypes.eq) ? this$1.parseMaybeAssign(noIn) : null
  node.declarations.push(this$1.finishNode(decl, "VariableDeclarator"))
} while (this.eat(tokTypes.comma))
if (!node.declarations.length) {
  var decl$1 = this.startNode()
  decl$1.id = this.dummyIdent()
  node.declarations.push(this.finishNode(decl$1, "VariableDeclarator"))
}
if (!noIn) this.semicolon()
return this.finishNode(node, "VariableDeclaration")

}

lp$1.parseClass = function(isStatement) {

var this$1 = this;

var node = this.startNode()
this.next()
if (isStatement == null) isStatement = this.tok.type === tokTypes.name
if (this.tok.type === tokTypes.name) node.id = this.parseIdent()
else if (isStatement) node.id = this.dummyIdent()
else node.id = null
node.superClass = this.eat(tokTypes._extends) ? this.parseExpression() : null
node.body = this.startNode()
node.body.body = []
this.pushCx()
var indent = this.curIndent + 1, line = this.curLineStart
this.eat(tokTypes.braceL)
if (this.curIndent + 1 < indent) { indent = this.curIndent; line = this.curLineStart }
while (!this.closes(tokTypes.braceR, indent, line)) {
  if (this$1.semicolon()) continue
  var method = this$1.startNode(), isGenerator, isAsync
  if (this$1.options.ecmaVersion >= 6) {
    method.static = false
    isGenerator = this$1.eat(tokTypes.star)
  }
  this$1.parsePropertyName(method)
  if (isDummy(method.key)) { if (isDummy(this$1.parseMaybeAssign())) this$1.next(); this$1.eat(tokTypes.comma); continue }
  if (method.key.type === "Identifier" && !method.computed && method.key.name === "static" &&
      (this$1.tok.type != tokTypes.parenL && this$1.tok.type != tokTypes.braceL)) {
    method.static = true
    isGenerator = this$1.eat(tokTypes.star)
    this$1.parsePropertyName(method)
  } else {
    method.static = false
  }
  if (!method.computed &&
      method.key.type === "Identifier" && method.key.name === "async" && this$1.tok.type !== tokTypes.parenL &&
      !this$1.canInsertSemicolon()) {
    this$1.parsePropertyName(method)
    isAsync = true
  } else {
    isAsync = false
  }
  if (this$1.options.ecmaVersion >= 5 && method.key.type === "Identifier" &&
      !method.computed && (method.key.name === "get" || method.key.name === "set") &&
      this$1.tok.type !== tokTypes.parenL && this$1.tok.type !== tokTypes.braceL) {
    method.kind = method.key.name
    this$1.parsePropertyName(method)
    method.value = this$1.parseMethod(false)
  } else {
    if (!method.computed && !method.static && !isGenerator && !isAsync && (
      method.key.type === "Identifier" && method.key.name === "constructor" ||
        method.key.type === "Literal" && method.key.value === "constructor")) {
      method.kind = "constructor"
    } else {
      method.kind =  "method"
    }
    method.value = this$1.parseMethod(isGenerator, isAsync)
  }
  node.body.body.push(this$1.finishNode(method, "MethodDefinition"))
}
this.popCx()
if (!this.eat(tokTypes.braceR)) {
  // If there is no closing brace, make the node span to the start
  // of the next token (this is useful for Tern)
  this.last.end = this.tok.start
  if (this.options.locations) this.last.loc.end = this.tok.loc.start
}
this.semicolon()
this.finishNode(node.body, "ClassBody")
return this.finishNode(node, isStatement ? "ClassDeclaration" : "ClassExpression")

}

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

var oldInAsync = this.inAsync
this.initFunction(node)
if (this.options.ecmaVersion >= 6) {
  node.generator = this.eat(tokTypes.star)
}
if (this.options.ecmaVersion >= 8) {
  node.async = !!isAsync
}
if (isStatement == null) isStatement = this.tok.type === tokTypes.name
if (this.tok.type === tokTypes.name) node.id = this.parseIdent()
else if (isStatement) node.id = this.dummyIdent()
this.inAsync = node.async
node.params = this.parseFunctionParams()
node.body = this.parseBlock()
this.inAsync = oldInAsync
return this.finishNode(node, isStatement ? "FunctionDeclaration" : "FunctionExpression")

}

lp$1.parseExport = function() {

var node = this.startNode()
this.next()
if (this.eat(tokTypes.star)) {
  node.source = this.eatContextual("from") ? this.parseExprAtom() : this.dummyString()
  return this.finishNode(node, "ExportAllDeclaration")
}
if (this.eat(tokTypes._default)) {
  // export default (function foo() {}) // This is FunctionExpression.
  var isAsync
  if (this.tok.type === tokTypes._function || (isAsync = this.toks.isAsyncFunction())) {
    var fNode = this.startNode()
    this.next()
    if (isAsync) this.next()
    node.declaration = this.parseFunction(fNode, null, isAsync)
  } else if (this.tok.type === tokTypes._class) {
    node.declaration = this.parseClass(null)
  } else {
    node.declaration = this.parseMaybeAssign()
    this.semicolon()
  }
  return this.finishNode(node, "ExportDefaultDeclaration")
}
if (this.tok.type.keyword || this.toks.isLet() || this.toks.isAsyncFunction()) {
  node.declaration = this.parseStatement()
  node.specifiers = []
  node.source = null
} else {
  node.declaration = null
  node.specifiers = this.parseExportSpecifierList()
  node.source = this.eatContextual("from") ? this.parseExprAtom() : null
  this.semicolon()
}
return this.finishNode(node, "ExportNamedDeclaration")

}

lp$1.parseImport = function() {

var node = this.startNode()
this.next()
if (this.tok.type === tokTypes.string) {
  node.specifiers = []
  node.source = this.parseExprAtom()
  node.kind = ''
} else {
  var elt
  if (this.tok.type === tokTypes.name && this.tok.value !== "from") {
    elt = this.startNode()
    elt.local = this.parseIdent()
    this.finishNode(elt, "ImportDefaultSpecifier")
    this.eat(tokTypes.comma)
  }
  node.specifiers = this.parseImportSpecifierList()
  node.source = this.eatContextual("from") && this.tok.type == tokTypes.string ? this.parseExprAtom() : this.dummyString()
  if (elt) node.specifiers.unshift(elt)
}
this.semicolon()
return this.finishNode(node, "ImportDeclaration")

}

lp$1.parseImportSpecifierList = function() {

var this$1 = this;

var elts = []
if (this.tok.type === tokTypes.star) {
  var elt = this.startNode()
  this.next()
  elt.local = this.eatContextual("as") ? this.parseIdent() : this.dummyIdent()
  elts.push(this.finishNode(elt, "ImportNamespaceSpecifier"))
} else {
  var indent = this.curIndent, line = this.curLineStart, continuedLine = this.nextLineStart
  this.pushCx()
  this.eat(tokTypes.braceL)
  if (this.curLineStart > continuedLine) continuedLine = this.curLineStart
  while (!this.closes(tokTypes.braceR, indent + (this.curLineStart <= continuedLine ? 1 : 0), line)) {
    var elt$1 = this$1.startNode()
    if (this$1.eat(tokTypes.star)) {
      elt$1.local = this$1.eatContextual("as") ? this$1.parseIdent() : this$1.dummyIdent()
      this$1.finishNode(elt$1, "ImportNamespaceSpecifier")
    } else {
      if (this$1.isContextual("from")) break
      elt$1.imported = this$1.parseIdent()
      if (isDummy(elt$1.imported)) break
      elt$1.local = this$1.eatContextual("as") ? this$1.parseIdent() : elt$1.imported
      this$1.finishNode(elt$1, "ImportSpecifier")
    }
    elts.push(elt$1)
    this$1.eat(tokTypes.comma)
  }
  this.eat(tokTypes.braceR)
  this.popCx()
}
return elts

}

lp$1.parseExportSpecifierList = function() {

var this$1 = this;

var elts = []
var indent = this.curIndent, line = this.curLineStart, continuedLine = this.nextLineStart
this.pushCx()
this.eat(tokTypes.braceL)
if (this.curLineStart > continuedLine) continuedLine = this.curLineStart
while (!this.closes(tokTypes.braceR, indent + (this.curLineStart <= continuedLine ? 1 : 0), line)) {
  if (this$1.isContextual("from")) break
  var elt = this$1.startNode()
  elt.local = this$1.parseIdent()
  if (isDummy(elt.local)) break
  elt.exported = this$1.eatContextual("as") ? this$1.parseIdent() : elt.local
  this$1.finishNode(elt, "ExportSpecifier")
  elts.push(elt)
  this$1.eat(tokTypes.comma)
}
this.eat(tokTypes.braceR)
this.popCx()
return elts

}

var lp$2 = LooseParser.prototype

lp$2.checkLVal = function(expr) {

if (!expr) return expr
switch (expr.type) {
case "Identifier":
case "MemberExpression":
  return expr

case "ParenthesizedExpression":
  expr.expression = this.checkLVal(expr.expression)
  return expr

default:
  return this.dummyIdent()
}

}

lp$2.parseExpression = function(noIn) {

var this$1 = this;

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

}

lp$2.parseParenExpression = function() {

this.pushCx()
this.expect(tokTypes.parenL)
var val = this.parseExpression()
this.popCx()
this.expect(tokTypes.parenR)
return val

}

lp$2.parseMaybeAssign = function(noIn) {

if (this.toks.isContextual("yield")) {
  var node = this.startNode()
  this.next()
  if (this.semicolon() || this.canInsertSemicolon() || (this.tok.type != tokTypes.star && !this.tok.type.startsExpr)) {
    node.delegate = false
    node.argument = null
  } else {
    node.delegate = this.eat(tokTypes.star)
    node.argument = this.parseMaybeAssign()
  }
  return this.finishNode(node, "YieldExpression")
}

var start = this.storeCurrentPos()
var left = this.parseMaybeConditional(noIn)
if (this.tok.type.isAssign) {
  var node$1 = this.startNodeAt(start)
  node$1.operator = this.tok.value
  node$1.left = this.tok.type === tokTypes.eq ? this.toAssignable(left) : this.checkLVal(left)
  this.next()
  node$1.right = this.parseMaybeAssign(noIn)
  return this.finishNode(node$1, "AssignmentExpression")
}
return left

}

lp$2.parseMaybeConditional = function(noIn) {

var start = this.storeCurrentPos()
var expr = this.parseExprOps(noIn)
if (this.eat(tokTypes.question)) {
  var node = this.startNodeAt(start)
  node.test = expr
  node.consequent = this.parseMaybeAssign()
  node.alternate = this.expect(tokTypes.colon) ? this.parseMaybeAssign(noIn) : this.dummyIdent()
  return this.finishNode(node, "ConditionalExpression")
}
return expr

}

lp$2.parseExprOps = function(noIn) {

var start = this.storeCurrentPos()
var indent = this.curIndent, line = this.curLineStart
return this.parseExprOp(this.parseMaybeUnary(false), start, -1, noIn, indent, line)

}

lp$2.parseExprOp = function(left, start, minPrec, noIn, indent, line) {

if (this.curLineStart != line && this.curIndent < indent && this.tokenStartsLine()) return left
var prec = this.tok.type.binop
if (prec != null && (!noIn || this.tok.type !== tokTypes._in)) {
  if (prec > minPrec) {
    var node = this.startNodeAt(start)
    node.left = left
    node.operator = this.tok.value
    this.next()
    if (this.curLineStart != line && this.curIndent < indent && this.tokenStartsLine()) {
      node.right = this.dummyIdent()
    } else {
      var rightStart = this.storeCurrentPos()
      node.right = this.parseExprOp(this.parseMaybeUnary(false), rightStart, prec, noIn, indent, line)
    }
    this.finishNode(node, /&&|\|\|/.test(node.operator) ? "LogicalExpression" : "BinaryExpression")
    return this.parseExprOp(node, start, minPrec, noIn, indent, line)
  }
}
return left

}

lp$2.parseMaybeUnary = function(sawUnary) {

var this$1 = this;

var start = this.storeCurrentPos(), expr
if (this.options.ecmaVersion >= 8 && this.inAsync && this.toks.isContextual("await")) {
  expr = this.parseAwait()
  sawUnary = true
} else if (this.tok.type.prefix) {
  var node = this.startNode(), update = this.tok.type === tokTypes.incDec
  if (!update) sawUnary = true
  node.operator = this.tok.value
  node.prefix = true
  this.next()
  node.argument = this.parseMaybeUnary(true)
  if (update) node.argument = this.checkLVal(node.argument)
  expr = this.finishNode(node, update ? "UpdateExpression" : "UnaryExpression")
} else if (this.tok.type === tokTypes.ellipsis) {
  var node$1 = this.startNode()
  this.next()
  node$1.argument = this.parseMaybeUnary(sawUnary)
  expr = this.finishNode(node$1, "SpreadElement")
} else {
  expr = this.parseExprSubscripts()
  while (this.tok.type.postfix && !this.canInsertSemicolon()) {
    var node$2 = this$1.startNodeAt(start)
    node$2.operator = this$1.tok.value
    node$2.prefix = false
    node$2.argument = this$1.checkLVal(expr)
    this$1.next()
    expr = this$1.finishNode(node$2, "UpdateExpression")
  }
}

if (!sawUnary && this.eat(tokTypes.starstar)) {
  var node$3 = this.startNodeAt(start)
  node$3.operator = "**"
  node$3.left = expr
  node$3.right = this.parseMaybeUnary(false)
  return this.finishNode(node$3, "BinaryExpression")
}

return expr

}

lp$2.parseExprSubscripts = function() {

var start = this.storeCurrentPos()
return this.parseSubscripts(this.parseExprAtom(), start, false, this.curIndent, this.curLineStart)

}

lp$2.parseSubscripts = function(base, start, noCalls, startIndent, line) {

var this$1 = this;

for (;;) {
  if (this$1.curLineStart != line && this$1.curIndent <= startIndent && this$1.tokenStartsLine()) {
    if (this$1.tok.type == tokTypes.dot && this$1.curIndent == startIndent)
      --startIndent
    else
      return base
  }

  var maybeAsyncArrow = base.type === "Identifier" && base.name === "async" && !this$1.canInsertSemicolon()

  if (this$1.eat(tokTypes.dot)) {
    var node = this$1.startNodeAt(start)
    node.object = base
    if (this$1.curLineStart != line && this$1.curIndent <= startIndent && this$1.tokenStartsLine())
      node.property = this$1.dummyIdent()
    else
      node.property = this$1.parsePropertyAccessor() || this$1.dummyIdent()
    node.computed = false
    base = this$1.finishNode(node, "MemberExpression")
  } else if (this$1.tok.type == tokTypes.bracketL) {
    this$1.pushCx()
    this$1.next()
    var node$1 = this$1.startNodeAt(start)
    node$1.object = base
    node$1.property = this$1.parseExpression()
    node$1.computed = true
    this$1.popCx()
    this$1.expect(tokTypes.bracketR)
    base = this$1.finishNode(node$1, "MemberExpression")
  } else if (!noCalls && this$1.tok.type == tokTypes.parenL) {
    var exprList = this$1.parseExprList(tokTypes.parenR)
    if (maybeAsyncArrow && this$1.eat(tokTypes.arrow))
      return this$1.parseArrowExpression(this$1.startNodeAt(start), exprList, true)
    var node$2 = this$1.startNodeAt(start)
    node$2.callee = base
    node$2.arguments = exprList
    base = this$1.finishNode(node$2, "CallExpression")
  } else if (this$1.tok.type == tokTypes.backQuote) {
    var node$3 = this$1.startNodeAt(start)
    node$3.tag = base
    node$3.quasi = this$1.parseTemplate()
    base = this$1.finishNode(node$3, "TaggedTemplateExpression")
  } else {
    return base
  }
}

}

lp$2.parseExprAtom = function() {

var node
switch (this.tok.type) {
case tokTypes._this:
case tokTypes._super:
  var type = this.tok.type === tokTypes._this ? "ThisExpression" : "Super"
  node = this.startNode()
  this.next()
  return this.finishNode(node, type)

case tokTypes.name:
  var start = this.storeCurrentPos()
  var id = this.parseIdent()
  var isAsync = false
  if (id.name === "async" && !this.canInsertSemicolon()) {
    if (this.eat(tokTypes._function))
      return this.parseFunction(this.startNodeAt(start), false, true)
    if (this.tok.type === tokTypes.name) {
      id = this.parseIdent()
      isAsync = true
    }
  }
  return this.eat(tokTypes.arrow) ? this.parseArrowExpression(this.startNodeAt(start), [id], isAsync) : id

case tokTypes.regexp:
  node = this.startNode()
  var val = this.tok.value
  node.regex = {pattern: val.pattern, flags: val.flags}
  node.value = val.value
  node.raw = this.input.slice(this.tok.start, this.tok.end)
  this.next()
  return this.finishNode(node, "Literal")

case tokTypes.num: case tokTypes.string:
  node = this.startNode()
  node.value = this.tok.value
  node.raw = this.input.slice(this.tok.start, this.tok.end)
  this.next()
  return this.finishNode(node, "Literal")

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

case tokTypes.parenL:
  var parenStart = this.storeCurrentPos()
  this.next()
  var inner = this.parseExpression()
  this.expect(tokTypes.parenR)
  if (this.eat(tokTypes.arrow)) {
    // (a,)=>a // SequenceExpression makes dummy in the last hole. Drop the dummy.
    var params = inner.expressions || [inner]
    if (params.length && isDummy(params[params.length - 1]))
      params.pop()
    return this.parseArrowExpression(this.startNodeAt(parenStart), params)
  }
  if (this.options.preserveParens) {
    var par = this.startNodeAt(parenStart)
    par.expression = inner
    inner = this.finishNode(par, "ParenthesizedExpression")
  }
  return inner

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

case tokTypes.braceL:
  return this.parseObj()

case tokTypes._class:
  return this.parseClass(false)

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

case tokTypes._new:
  return this.parseNew()

case tokTypes.backQuote:
  return this.parseTemplate()

default:
  return this.dummyIdent()
}

}

lp$2.parseNew = function() {

var node = this.startNode(), startIndent = this.curIndent, line = this.curLineStart
var meta = this.parseIdent(true)
if (this.options.ecmaVersion >= 6 && this.eat(tokTypes.dot)) {
  node.meta = meta
  node.property = this.parseIdent(true)
  return this.finishNode(node, "MetaProperty")
}
var start = this.storeCurrentPos()
node.callee = this.parseSubscripts(this.parseExprAtom(), start, true, startIndent, line)
if (this.tok.type == tokTypes.parenL) {
  node.arguments = this.parseExprList(tokTypes.parenR)
} else {
  node.arguments = []
}
return this.finishNode(node, "NewExpression")

}

lp$2.parseTemplateElement = function() {

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

}

lp$2.parseTemplate = function() {

var this$1 = this;

var node = this.startNode()
this.next()
node.expressions = []
var curElt = this.parseTemplateElement()
node.quasis = [curElt]
while (!curElt.tail) {
  this$1.next()
  node.expressions.push(this$1.parseExpression())
  if (this$1.expect(tokTypes.braceR)) {
    curElt = this$1.parseTemplateElement()
  } else {
    curElt = this$1.startNode()
    curElt.value = {cooked: '', raw: ''}
    curElt.tail = true
    this$1.finishNode(curElt, "TemplateElement")
  }
  node.quasis.push(curElt)
}
this.expect(tokTypes.backQuote)
return this.finishNode(node, "TemplateLiteral")

}

lp$2.parseObj = function() {

var this$1 = this;

var node = this.startNode()
node.properties = []
this.pushCx()
var indent = this.curIndent + 1, line = this.curLineStart
this.eat(tokTypes.braceL)
if (this.curIndent + 1 < indent) { indent = this.curIndent; line = this.curLineStart }
while (!this.closes(tokTypes.braceR, indent, line)) {
  var prop = this$1.startNode(), isGenerator, isAsync, start
  if (this$1.options.ecmaVersion >= 6) {
    start = this$1.storeCurrentPos()
    prop.method = false
    prop.shorthand = false
    isGenerator = this$1.eat(tokTypes.star)
  }
  this$1.parsePropertyName(prop)
  if (!prop.computed &&
      prop.key.type === "Identifier" && prop.key.name === "async" && this$1.tok.type !== tokTypes.parenL &&
      this$1.tok.type !== tokTypes.colon && !this$1.canInsertSemicolon()) {
    this$1.parsePropertyName(prop)
    isAsync = true
  } else {
    isAsync = false
  }
  if (isDummy(prop.key)) { if (isDummy(this$1.parseMaybeAssign())) this$1.next(); this$1.eat(tokTypes.comma); continue }
  if (this$1.eat(tokTypes.colon)) {
    prop.kind = "init"
    prop.value = this$1.parseMaybeAssign()
  } else if (this$1.options.ecmaVersion >= 6 && (this$1.tok.type === tokTypes.parenL || this$1.tok.type === tokTypes.braceL)) {
    prop.kind = "init"
    prop.method = true
    prop.value = this$1.parseMethod(isGenerator, isAsync)
  } else if (this$1.options.ecmaVersion >= 5 && prop.key.type === "Identifier" &&
             !prop.computed && (prop.key.name === "get" || prop.key.name === "set") &&
             (this$1.tok.type != tokTypes.comma && this$1.tok.type != tokTypes.braceR)) {
    prop.kind = prop.key.name
    this$1.parsePropertyName(prop)
    prop.value = this$1.parseMethod(false)
  } else {
    prop.kind = "init"
    if (this$1.options.ecmaVersion >= 6) {
      if (this$1.eat(tokTypes.eq)) {
        var assign = this$1.startNodeAt(start)
        assign.operator = "="
        assign.left = prop.key
        assign.right = this$1.parseMaybeAssign()
        prop.value = this$1.finishNode(assign, "AssignmentExpression")
      } else {
        prop.value = prop.key
      }
    } else {
      prop.value = this$1.dummyIdent()
    }
    prop.shorthand = true
  }
  node.properties.push(this$1.finishNode(prop, "Property"))
  this$1.eat(tokTypes.comma)
}
this.popCx()
if (!this.eat(tokTypes.braceR)) {
  // If there is no closing brace, make the node span to the start
  // of the next token (this is useful for Tern)
  this.last.end = this.tok.start
  if (this.options.locations) this.last.loc.end = this.tok.loc.start
}
return this.finishNode(node, "ObjectExpression")

}

lp$2.parsePropertyName = function(prop) {

if (this.options.ecmaVersion >= 6) {
  if (this.eat(tokTypes.bracketL)) {
    prop.computed = true
    prop.key = this.parseExpression()
    this.expect(tokTypes.bracketR)
    return
  } else {
    prop.computed = false
  }
}
var key = (this.tok.type === tokTypes.num || this.tok.type === tokTypes.string) ? this.parseExprAtom() : this.parseIdent()
prop.key = key || this.dummyIdent()

}

lp$2.parsePropertyAccessor = function() {

if (this.tok.type === tokTypes.name || this.tok.type.keyword) return this.parseIdent()

}

lp$2.parseIdent = function() {

var name = this.tok.type === tokTypes.name ? this.tok.value : this.tok.type.keyword
if (!name) return this.dummyIdent()
var node = this.startNode()
this.next()
node.name = name
return this.finishNode(node, "Identifier")

}

lp$2.initFunction = function(node) {

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

}

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

lp$2.toAssignable = function(node, binding) {

var this$1 = this;

if (!node || node.type == "Identifier" || (node.type == "MemberExpression" && !binding)) {
  // Okay
} else if (node.type == "ParenthesizedExpression") {
  node.expression = this.toAssignable(node.expression, binding)
} else if (this.options.ecmaVersion < 6) {
  return this.dummyIdent()
} else if (node.type == "ObjectExpression") {
  node.type = "ObjectPattern"
  var props = node.properties
  for (var i = 0; i < props.length; i++)
    props[i].value = this$1.toAssignable(props[i].value, binding)
} else if (node.type == "ArrayExpression") {
  node.type = "ArrayPattern"
  this.toAssignableList(node.elements, binding)
} else if (node.type == "SpreadElement") {
  node.type = "RestElement"
  node.argument = this.toAssignable(node.argument, binding)
} else if (node.type == "AssignmentExpression") {
  node.type = "AssignmentPattern"
  delete node.operator
} else {
  return this.dummyIdent()
}
return node

}

lp$2.toAssignableList = function(exprList, binding) {

var this$1 = this;

for (var i = 0; i < exprList.length; i++)
  exprList[i] = this$1.toAssignable(exprList[i], binding)
return exprList

}

lp$2.parseFunctionParams = function(params) {

params = this.parseExprList(tokTypes.parenR)
return this.toAssignableList(params, true)

}

lp$2.parseMethod = function(isGenerator, isAsync) {

var node = this.startNode(), oldInAsync = this.inAsync
this.initFunction(node)
if (this.options.ecmaVersion >= 6)
  node.generator = !!isGenerator
if (this.options.ecmaVersion >= 8)
  node.async = !!isAsync
this.inAsync = node.async
node.params = this.parseFunctionParams()
node.expression = this.options.ecmaVersion >= 6 && this.tok.type !== tokTypes.braceL
node.body = node.expression ? this.parseMaybeAssign() : this.parseBlock()
this.inAsync = oldInAsync
return this.finishNode(node, "FunctionExpression")

}

lp$2.parseArrowExpression = function(node, params, isAsync) {

var oldInAsync = this.inAsync
this.initFunction(node)
if (this.options.ecmaVersion >= 8)
  node.async = !!isAsync
this.inAsync = node.async
node.params = this.toAssignableList(params, true)
node.expression = this.tok.type !== tokTypes.braceL
node.body = node.expression ? this.parseMaybeAssign() : this.parseBlock()
this.inAsync = oldInAsync
return this.finishNode(node, "ArrowFunctionExpression")

}

lp$2.parseExprList = function(close, allowEmpty) {

var this$1 = this;

this.pushCx()
var indent = this.curIndent, line = this.curLineStart, elts = []
this.next() // Opening bracket
while (!this.closes(close, indent + 1, line)) {
  if (this$1.eat(tokTypes.comma)) {
    elts.push(allowEmpty ? null : this$1.dummyIdent())
    continue
  }
  var elt = this$1.parseMaybeAssign()
  if (isDummy(elt)) {
    if (this$1.closes(close, indent, line)) break
    this$1.next()
  } else {
    elts.push(elt)
  }
  this$1.eat(tokTypes.comma)
}
this.popCx()
if (!this.eat(close)) {
  // If there is no closing brace, make the node span to the start
  // of the next token (this is useful for Tern)
  this.last.end = this.tok.start
  if (this.options.locations) this.last.loc.end = this.tok.loc.start
}
return elts

}

lp$2.parseAwait = function() {

var node = this.startNode()
this.next()
node.argument = this.parseMaybeUnary()
return this.finishNode(node, "AwaitExpression")

}

// Acorn: Loose parser // // This module provides an alternative parser (`parse_dammit`) that // exposes that same interface as `parse`, but will try to parse // anything as JavaScript, repairing syntax error the best it can. // There are circumstances in which it will raise an error and give // up, but they are very rare. The resulting AST will be a mostly // valid JavaScript AST (as per the [Mozilla parser API], except // that: // // - Return outside functions is allowed // // - Label consistency (no conflicts, break only to existing labels) // is not enforced. // // - Bogus Identifier nodes with a name of `“✖”` are inserted whenever // the parser got too confused to return anything meaningful. // // [api]: developer.mozilla.org/en-US/docs/SpiderMonkey/Parser_API // // The expected use for this is to first try `acorn.parse`, and only // if that fails switch to `parse_dammit`. The loose parser might // parse badly indented code incorrectly, so **don't** use it as // your default parser. // // Quite a lot of acorn.js is duplicated here. The alternative was to // add a lot of extra cruft to that file, making it less readable // and slower. Copying and editing the code allowed me to make // invasive changes and simplifications without creating a complicated // tangle.

defaultOptions.tabSize = 4

function parse_dammit(input, options) {

var p = new LooseParser(input, options)
p.next()
return p.parseTopLevel()

}

addLooseExports(parse_dammit, LooseParser, pluginsLoose)

export { parse_dammit, LooseParser, pluginsLoose };