var hasMap = typeof Map === 'function' && Map.prototype; var mapSizeDescriptor = Object.getOwnPropertyDescriptor && hasMap ? Object.getOwnPropertyDescriptor(Map.prototype, 'size') : null; var mapSize = hasMap && mapSizeDescriptor && typeof mapSizeDescriptor.get === 'function' ? mapSizeDescriptor.get : null; var mapForEach = hasMap && Map.prototype.forEach; var hasSet = typeof Set === 'function' && Set.prototype; var setSizeDescriptor = Object.getOwnPropertyDescriptor && hasSet ? Object.getOwnPropertyDescriptor(Set.prototype, 'size') : null; var setSize = hasSet && setSizeDescriptor && typeof setSizeDescriptor.get === 'function' ? setSizeDescriptor.get : null; var setForEach = hasSet && Set.prototype.forEach; var booleanValueOf = Boolean.prototype.valueOf; var objectToString = Object.prototype.toString; var bigIntValueOf = typeof BigInt === 'function' ? BigInt.prototype.valueOf : null;

var inspectCustom = require('./util.inspect').custom; var inspectSymbol = (inspectCustom && isSymbol(inspectCustom)) ? inspectCustom : null;

module.exports = function inspect_ (obj, opts, depth, seen) {

if (!opts) opts = {};

if (has(opts, 'quoteStyle') && (opts.quoteStyle !== 'single' && opts.quoteStyle !== 'double')) {
    throw new TypeError('option "quoteStyle" must be "single" or "double"');
}

if (typeof obj === 'undefined') {
    return 'undefined';
}
if (obj === null) {
    return 'null';
}
if (typeof obj === 'boolean') {
    return obj ? 'true' : 'false';
}

if (typeof obj === 'string') {
    return inspectString(obj, opts);
}
if (typeof obj === 'number') {
  if (obj === 0) {
    return Infinity / obj > 0 ? '0' : '-0';
  }
  return String(obj);
}
if (typeof obj === 'bigint') {
  return String(obj) + 'n';
}

var maxDepth = typeof opts.depth === 'undefined' ? 5 : opts.depth;
if (typeof depth === 'undefined') depth = 0;
if (depth >= maxDepth && maxDepth > 0 && typeof obj === 'object') {
    return '[Object]';
}

if (typeof seen === 'undefined') seen = [];
else if (indexOf(seen, obj) >= 0) {
    return '[Circular]';
}

function inspect (value, from) {
    if (from) {
        seen = seen.slice();
        seen.push(from);
    }
    return inspect_(value, opts, depth + 1, seen);
}

if (typeof obj === 'function') {
    var name = nameOf(obj);
    return '[Function' + (name ? ': ' + name : '') + ']';
}
if (isSymbol(obj)) {
    var symString = Symbol.prototype.toString.call(obj);
    return typeof obj === 'object' ? markBoxed(symString) : symString;
}
if (isElement(obj)) {
    var s = '<' + String(obj.nodeName).toLowerCase();
    var attrs = obj.attributes || [];
    for (var i = 0; i < attrs.length; i++) {
        s += ' ' + attrs[i].name + '=' + wrapQuotes(quote(attrs[i].value), 'double', opts);
    }
    s += '>';
    if (obj.childNodes && obj.childNodes.length) s += '...';
    s += '</' + String(obj.nodeName).toLowerCase() + '>';
    return s;
}
if (isArray(obj)) {
    if (obj.length === 0) return '[]';
    return '[ ' + arrObjKeys(obj, inspect).join(', ') + ' ]';
}
if (isError(obj)) {
    var parts = arrObjKeys(obj, inspect);
    if (parts.length === 0) return '[' + String(obj) + ']';
    return '{ [' + String(obj) + '] ' + parts.join(', ') + ' }';
}
if (typeof obj === 'object') {
    if (inspectSymbol && typeof obj[inspectSymbol] === 'function') {
        return obj[inspectSymbol]();
    } else if (typeof obj.inspect === 'function') {
        return obj.inspect();
    }
}
if (isMap(obj)) {
    var parts = [];
    mapForEach.call(obj, function (value, key) {
        parts.push(inspect(key, obj) + ' => ' + inspect(value, obj));
    });
    return collectionOf('Map', mapSize.call(obj), parts);
}
if (isSet(obj)) {
    var parts = [];
    setForEach.call(obj, function (value ) {
        parts.push(inspect(value, obj));
    });
    return collectionOf('Set', setSize.call(obj), parts);
}
if (isNumber(obj)) {
    return markBoxed(inspect(Number(obj)));
}
if (isBigInt(obj)) {
    return markBoxed(inspect(bigIntValueOf.call(obj)));
}
if (isBoolean(obj)) {
    return markBoxed(booleanValueOf.call(obj));
}
if (isString(obj)) {
    return markBoxed(inspect(String(obj)));
}
if (!isDate(obj) && !isRegExp(obj)) {
    var xs = arrObjKeys(obj, inspect);
    if (xs.length === 0) return '{}';
    return '{ ' + xs.join(', ') + ' }';
}
return String(obj);

};

function wrapQuotes (s, defaultStyle, opts) {

var quoteChar = (opts.quoteStyle || defaultStyle) === 'double' ? '"' : "'";
return quoteChar + s + quoteChar;

}

function quote (s) {

return String(s).replace(/"/g, '&quot;');

}

function isArray (obj) { return toStr(obj) === '[object Array]'; } function isDate (obj) { return toStr(obj) === '[object Date]'; } function isRegExp (obj) { return toStr(obj) === '[object RegExp]'; } function isError (obj) { return toStr(obj) === '[object Error]'; } function isSymbol (obj) { return toStr(obj) === '[object Symbol]'; } function isString (obj) { return toStr(obj) === '[object String]'; } function isNumber (obj) { return toStr(obj) === '[object Number]'; } function isBigInt (obj) { return toStr(obj) === '[object BigInt]'; } function isBoolean (obj) { return toStr(obj) === '[object Boolean]'; }

var hasOwn = Object.prototype.hasOwnProperty || function (key) { return key in this; }; function has (obj, key) {

return hasOwn.call(obj, key);

}

function toStr (obj) {

return objectToString.call(obj);

}

function nameOf (f) {

if (f.name) return f.name;
var m = String(f).match(/^function\s*([\w$]+)/);
if (m) return m[1];

}

function indexOf (xs, x) {

if (xs.indexOf) return xs.indexOf(x);
for (var i = 0, l = xs.length; i < l; i++) {
    if (xs[i] === x) return i;
}
return -1;

}

function isMap (x) {

if (!mapSize) {
    return false;
}
try {
    mapSize.call(x);
    try {
        setSize.call(x);
    } catch (s) {
        return true;
    }
    return x instanceof Map; // core-js workaround, pre-v2.5.0
} catch (e) {}
return false;

}

function isSet (x) {

if (!setSize) {
    return false;
}
try {
    setSize.call(x);
    try {
        mapSize.call(x);
    } catch (m) {
        return true;
    }
    return x instanceof Set; // core-js workaround, pre-v2.5.0
} catch (e) {}
return false;

}

function isElement (x) {

if (!x || typeof x !== 'object') return false;
if (typeof HTMLElement !== 'undefined' && x instanceof HTMLElement) {
    return true;
}
return typeof x.nodeName === 'string'
    && typeof x.getAttribute === 'function'
;

}

function inspectString (str, opts) {

var s = str.replace(/(['\\])/g, '\\$1').replace(/[\x00-\x1f]/g, lowbyte);
return wrapQuotes(s, 'single', opts);

}

function lowbyte © {

var n = c.charCodeAt(0);
var x = { 8: 'b', 9: 't', 10: 'n', 12: 'f', 13: 'r' }[n];
if (x) return '\\' + x;
return '\\x' + (n < 0x10 ? '0' : '') + n.toString(16);

}

function markBoxed (str) {

return 'Object(' + str + ')';

}

function collectionOf (type, size, entries) {

return type + ' (' + size + ') {' + entries.join(', ') + '}';

}

function arrObjKeys (obj, inspect) {

var isArr = isArray(obj);
var xs = [];
if (isArr) {
    xs.length = obj.length;
    for (var i = 0; i < obj.length; i++) {
        xs[i] = has(obj, i) ? inspect(obj[i], obj) : '';
    }
}
for (var key in obj) {
    if (!has(obj, key)) continue;
    if (isArr && String(Number(key)) === key && key < obj.length) continue;
    if (/[^\w$]/.test(key)) {
        xs.push(inspect(key, obj) + ': ' + inspect(obj[key], obj));
    } else {
        xs.push(key + ': ' + inspect(obj[key], obj));
    }
}
return xs;

}