258 lines
8.0 KiB
JavaScript
258 lines
8.0 KiB
JavaScript
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var hasMap = typeof Map === 'function' && Map.prototype;
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var mapSizeDescriptor = Object.getOwnPropertyDescriptor && hasMap ? Object.getOwnPropertyDescriptor(Map.prototype, 'size') : null;
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var mapSize = hasMap && mapSizeDescriptor && typeof mapSizeDescriptor.get === 'function' ? mapSizeDescriptor.get : null;
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var mapForEach = hasMap && Map.prototype.forEach;
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var hasSet = typeof Set === 'function' && Set.prototype;
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var setSizeDescriptor = Object.getOwnPropertyDescriptor && hasSet ? Object.getOwnPropertyDescriptor(Set.prototype, 'size') : null;
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var setSize = hasSet && setSizeDescriptor && typeof setSizeDescriptor.get === 'function' ? setSizeDescriptor.get : null;
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var setForEach = hasSet && Set.prototype.forEach;
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var booleanValueOf = Boolean.prototype.valueOf;
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var objectToString = Object.prototype.toString;
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var bigIntValueOf = typeof BigInt === 'function' ? BigInt.prototype.valueOf : null;
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var inspectCustom = require('./util.inspect').custom;
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var inspectSymbol = (inspectCustom && isSymbol(inspectCustom)) ? inspectCustom : null;
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module.exports = function inspect_ (obj, opts, depth, seen) {
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if (!opts) opts = {};
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if (has(opts, 'quoteStyle') && (opts.quoteStyle !== 'single' && opts.quoteStyle !== 'double')) {
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throw new TypeError('option "quoteStyle" must be "single" or "double"');
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}
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if (typeof obj === 'undefined') {
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return 'undefined';
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}
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if (obj === null) {
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return 'null';
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}
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if (typeof obj === 'boolean') {
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return obj ? 'true' : 'false';
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}
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if (typeof obj === 'string') {
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return inspectString(obj, opts);
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}
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if (typeof obj === 'number') {
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if (obj === 0) {
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return Infinity / obj > 0 ? '0' : '-0';
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}
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return String(obj);
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}
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if (typeof obj === 'bigint') {
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return String(obj) + 'n';
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}
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var maxDepth = typeof opts.depth === 'undefined' ? 5 : opts.depth;
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if (typeof depth === 'undefined') depth = 0;
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if (depth >= maxDepth && maxDepth > 0 && typeof obj === 'object') {
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return '[Object]';
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}
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if (typeof seen === 'undefined') seen = [];
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else if (indexOf(seen, obj) >= 0) {
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return '[Circular]';
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}
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function inspect (value, from) {
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if (from) {
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seen = seen.slice();
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seen.push(from);
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}
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return inspect_(value, opts, depth + 1, seen);
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}
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if (typeof obj === 'function') {
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var name = nameOf(obj);
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return '[Function' + (name ? ': ' + name : '') + ']';
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}
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if (isSymbol(obj)) {
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var symString = Symbol.prototype.toString.call(obj);
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return typeof obj === 'object' ? markBoxed(symString) : symString;
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}
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if (isElement(obj)) {
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var s = '<' + String(obj.nodeName).toLowerCase();
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var attrs = obj.attributes || [];
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for (var i = 0; i < attrs.length; i++) {
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s += ' ' + attrs[i].name + '=' + wrapQuotes(quote(attrs[i].value), 'double', opts);
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}
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s += '>';
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if (obj.childNodes && obj.childNodes.length) s += '...';
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s += '</' + String(obj.nodeName).toLowerCase() + '>';
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return s;
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}
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if (isArray(obj)) {
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if (obj.length === 0) return '[]';
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return '[ ' + arrObjKeys(obj, inspect).join(', ') + ' ]';
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}
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if (isError(obj)) {
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var parts = arrObjKeys(obj, inspect);
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if (parts.length === 0) return '[' + String(obj) + ']';
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return '{ [' + String(obj) + '] ' + parts.join(', ') + ' }';
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}
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if (typeof obj === 'object') {
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if (inspectSymbol && typeof obj[inspectSymbol] === 'function') {
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return obj[inspectSymbol]();
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} else if (typeof obj.inspect === 'function') {
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return obj.inspect();
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}
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}
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if (isMap(obj)) {
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var parts = [];
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mapForEach.call(obj, function (value, key) {
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parts.push(inspect(key, obj) + ' => ' + inspect(value, obj));
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});
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return collectionOf('Map', mapSize.call(obj), parts);
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}
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if (isSet(obj)) {
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var parts = [];
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setForEach.call(obj, function (value ) {
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parts.push(inspect(value, obj));
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});
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return collectionOf('Set', setSize.call(obj), parts);
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}
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if (isNumber(obj)) {
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return markBoxed(inspect(Number(obj)));
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}
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if (isBigInt(obj)) {
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return markBoxed(inspect(bigIntValueOf.call(obj)));
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}
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if (isBoolean(obj)) {
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return markBoxed(booleanValueOf.call(obj));
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}
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if (isString(obj)) {
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return markBoxed(inspect(String(obj)));
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}
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if (!isDate(obj) && !isRegExp(obj)) {
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var xs = arrObjKeys(obj, inspect);
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if (xs.length === 0) return '{}';
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return '{ ' + xs.join(', ') + ' }';
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}
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return String(obj);
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};
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function wrapQuotes (s, defaultStyle, opts) {
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var quoteChar = (opts.quoteStyle || defaultStyle) === 'double' ? '"' : "'";
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return quoteChar + s + quoteChar;
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}
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function quote (s) {
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return String(s).replace(/"/g, '"');
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}
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function isArray (obj) { return toStr(obj) === '[object Array]'; }
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function isDate (obj) { return toStr(obj) === '[object Date]'; }
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function isRegExp (obj) { return toStr(obj) === '[object RegExp]'; }
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function isError (obj) { return toStr(obj) === '[object Error]'; }
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function isSymbol (obj) { return toStr(obj) === '[object Symbol]'; }
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function isString (obj) { return toStr(obj) === '[object String]'; }
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function isNumber (obj) { return toStr(obj) === '[object Number]'; }
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function isBigInt (obj) { return toStr(obj) === '[object BigInt]'; }
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function isBoolean (obj) { return toStr(obj) === '[object Boolean]'; }
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var hasOwn = Object.prototype.hasOwnProperty || function (key) { return key in this; };
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function has (obj, key) {
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return hasOwn.call(obj, key);
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}
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function toStr (obj) {
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return objectToString.call(obj);
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}
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function nameOf (f) {
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if (f.name) return f.name;
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var m = String(f).match(/^function\s*([\w$]+)/);
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if (m) return m[1];
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}
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function indexOf (xs, x) {
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if (xs.indexOf) return xs.indexOf(x);
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for (var i = 0, l = xs.length; i < l; i++) {
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if (xs[i] === x) return i;
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}
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return -1;
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}
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function isMap (x) {
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if (!mapSize) {
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return false;
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}
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try {
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mapSize.call(x);
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try {
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setSize.call(x);
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} catch (s) {
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return true;
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}
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return x instanceof Map; // core-js workaround, pre-v2.5.0
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} catch (e) {}
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return false;
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}
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function isSet (x) {
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if (!setSize) {
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return false;
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}
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try {
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setSize.call(x);
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try {
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mapSize.call(x);
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} catch (m) {
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return true;
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}
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return x instanceof Set; // core-js workaround, pre-v2.5.0
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} catch (e) {}
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return false;
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}
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function isElement (x) {
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if (!x || typeof x !== 'object') return false;
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if (typeof HTMLElement !== 'undefined' && x instanceof HTMLElement) {
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return true;
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}
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return typeof x.nodeName === 'string'
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&& typeof x.getAttribute === 'function'
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;
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}
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function inspectString (str, opts) {
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var s = str.replace(/(['\\])/g, '\\$1').replace(/[\x00-\x1f]/g, lowbyte);
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return wrapQuotes(s, 'single', opts);
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}
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function lowbyte (c) {
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var n = c.charCodeAt(0);
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var x = { 8: 'b', 9: 't', 10: 'n', 12: 'f', 13: 'r' }[n];
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if (x) return '\\' + x;
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return '\\x' + (n < 0x10 ? '0' : '') + n.toString(16);
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}
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function markBoxed (str) {
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return 'Object(' + str + ')';
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}
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function collectionOf (type, size, entries) {
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return type + ' (' + size + ') {' + entries.join(', ') + '}';
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}
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function arrObjKeys (obj, inspect) {
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var isArr = isArray(obj);
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var xs = [];
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if (isArr) {
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xs.length = obj.length;
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for (var i = 0; i < obj.length; i++) {
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xs[i] = has(obj, i) ? inspect(obj[i], obj) : '';
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}
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}
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for (var key in obj) {
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if (!has(obj, key)) continue;
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if (isArr && String(Number(key)) === key && key < obj.length) continue;
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if (/[^\w$]/.test(key)) {
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xs.push(inspect(key, obj) + ': ' + inspect(obj[key], obj));
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} else {
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xs.push(key + ': ' + inspect(obj[key], obj));
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}
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}
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return xs;
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}
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