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 hasWeakMap = typeof WeakMap === 'function' && WeakMap.prototype; var weakMapHas = hasWeakMap ? WeakMap.prototype.has : null; var hasWeakSet = typeof WeakSet === 'function' && WeakSet.prototype; var weakSetHas = hasWeakSet ? WeakSet.prototype.has : null; var booleanValueOf = Boolean.prototype.valueOf; var objectToString = Object.prototype.toString; var functionToString = Function.prototype.toString; var match = String.prototype.match; 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, options, depth, seen) { var opts = options || {}; if (has(opts, 'quoteStyle') && (opts.quoteStyle !== 'single' && opts.quoteStyle !== 'double')) { throw new TypeError('option "quoteStyle" must be "single" or "double"'); } if ( has(opts, 'maxStringLength') && (typeof opts.maxStringLength === 'number' ? opts.maxStringLength < 0 && opts.maxStringLength !== Infinity : opts.maxStringLength !== null ) ) { throw new TypeError('option "maxStringLength", if provided, must be a positive integer, Infinity, or `null`'); } var customInspect = has(opts, 'customInspect') ? opts.customInspect : true; if (typeof customInspect !== 'boolean') { throw new TypeError('option "customInspect", if provided, must be `true` or `false`'); } if ( has(opts, 'indent') && opts.indent !== null && opts.indent !== '\t' && !(parseInt(opts.indent, 10) === opts.indent && opts.indent > 0) ) { throw new TypeError('options "indent" must be "\\t", an integer > 0, or `null`'); } 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') { // eslint-disable-line valid-typeof 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 isArray(obj) ? '[Array]' : '[Object]'; } var indent = getIndent(opts, depth); if (typeof seen === 'undefined') { seen = []; } else if (indexOf(seen, obj) >= 0) { return '[Circular]'; } function inspect(value, from, noIndent) { if (from) { seen = seen.slice(); seen.push(from); } if (noIndent) { var newOpts = { depth: opts.depth }; if (has(opts, 'quoteStyle')) { newOpts.quoteStyle = opts.quoteStyle; } return inspect_(value, newOpts, depth + 1, seen); } return inspect_(value, opts, depth + 1, seen); } if (typeof obj === 'function') { var name = nameOf(obj); return '[Function' + (name ? ': ' + name : ' (anonymous)') + ']'; } 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 += ''; return s; } if (isArray(obj)) { if (obj.length === 0) { return '[]'; } var xs = arrObjKeys(obj, inspect); if (indent && !singleLineValues(xs)) { return '[' + indentedJoin(xs, indent) + ']'; } return '[ ' + xs.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' && customInspect) { if (inspectSymbol && typeof obj[inspectSymbol] === 'function') { return obj[inspectSymbol](); } else if (typeof obj.inspect === 'function') { return obj.inspect(); } } if (isMap(obj)) { var mapParts = []; mapForEach.call(obj, function (value, key) { mapParts.push(inspect(key, obj, true) + ' => ' + inspect(value, obj)); }); return collectionOf('Map', mapSize.call(obj), mapParts, indent); } if (isSet(obj)) { var setParts = []; setForEach.call(obj, function (value) { setParts.push(inspect(value, obj)); }); return collectionOf('Set', setSize.call(obj), setParts, indent); } if (isWeakMap(obj)) { return weakCollectionOf('WeakMap'); } if (isWeakSet(obj)) { return weakCollectionOf('WeakSet'); } 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 ys = arrObjKeys(obj, inspect); if (ys.length === 0) { return '{}'; } if (indent) { return '{' + indentedJoin(ys, indent) + '}'; } return '{ ' + ys.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, '"'); } 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 = match.call(functionToString.call(f), /^function\s*([\w$]+)/); if (m) { return m[1]; } return null; } 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 || !x || typeof x !== 'object') { 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 isWeakMap(x) { if (!weakMapHas || !x || typeof x !== 'object') { return false; } try { weakMapHas.call(x, weakMapHas); try { weakSetHas.call(x, weakSetHas); } catch (s) { return true; } return x instanceof WeakMap; // core-js workaround, pre-v2.5.0 } catch (e) {} return false; } function isSet(x) { if (!setSize || !x || typeof x !== 'object') { 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 isWeakSet(x) { if (!weakSetHas || !x || typeof x !== 'object') { return false; } try { weakSetHas.call(x, weakSetHas); try { weakMapHas.call(x, weakMapHas); } catch (s) { return true; } return x instanceof WeakSet; // 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) { if (str.length > opts.maxStringLength) { var remaining = str.length - opts.maxStringLength; var trailer = '... ' + remaining + ' more character' + (remaining > 1 ? 's' : ''); return inspectString(str.slice(0, opts.maxStringLength), opts) + trailer; } // eslint-disable-next-line no-control-regex var s = str.replace(/(['\\])/g, '\\$1').replace(/[\x00-\x1f]/g, lowbyte); return wrapQuotes(s, 'single', opts); } function lowbyte(c) { 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 weakCollectionOf(type) { return type + ' { ? }'; } function collectionOf(type, size, entries, indent) { var joinedEntries = indent ? indentedJoin(entries, indent) : entries.join(', '); return type + ' (' + size + ') {' + joinedEntries + '}'; } function singleLineValues(xs) { for (var i = 0; i < xs.length; i++) { if (indexOf(xs[i], '\n') >= 0) { return false; } } return true; } function getIndent(opts, depth) { var baseIndent; if (opts.indent === '\t') { baseIndent = '\t'; } else if (typeof opts.indent === 'number' && opts.indent > 0) { baseIndent = Array(opts.indent + 1).join(' '); } else { return null; } return { base: baseIndent, prev: Array(depth + 1).join(baseIndent) }; } function indentedJoin(xs, indent) { if (xs.length === 0) { return ''; } var lineJoiner = '\n' + indent.prev + indent.base; return lineJoiner + xs.join(',' + lineJoiner) + '\n' + indent.prev; } 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) { // eslint-disable-line no-restricted-syntax if (!has(obj, key)) { continue; } // eslint-disable-line no-restricted-syntax, no-continue if (isArr && String(Number(key)) === key && key < obj.length) { continue; } // eslint-disable-line no-restricted-syntax, no-continue if ((/[^\w$]/).test(key)) { xs.push(inspect(key, obj) + ': ' + inspect(obj[key], obj)); } else { xs.push(key + ': ' + inspect(obj[key], obj)); } } return xs; }