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123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282283284285286287288289290291292293294295296297298299300301302303304305306307308309310311312313314315316317318319320321322323324325326327328329330331332333334335336337338339340341342343344345346347348349350351352353354355356357358359360361362363364365366367368369370371372373374375376377378379/* ! * type-detect * Copyright(c) 2013 jake luer <jake@alogicalparadox.com> * MIT Licensed */const promiseExists = typeof Promise === 'function';
/* eslint-disable no-undef */const globalObject = typeof self === 'object' ? self : global; // eslint-disable-line id-blacklist
const symbolExists = typeof Symbol !== 'undefined';const mapExists = typeof Map !== 'undefined';const setExists = typeof Set !== 'undefined';const weakMapExists = typeof WeakMap !== 'undefined';const weakSetExists = typeof WeakSet !== 'undefined';const dataViewExists = typeof DataView !== 'undefined';const symbolIteratorExists = symbolExists && typeof Symbol.iterator !== 'undefined';const symbolToStringTagExists = symbolExists && typeof Symbol.toStringTag !== 'undefined';const setEntriesExists = setExists && typeof Set.prototype.entries === 'function';const mapEntriesExists = mapExists && typeof Map.prototype.entries === 'function';const setIteratorPrototype = setEntriesExists && Object.getPrototypeOf(new Set().entries());const mapIteratorPrototype = mapEntriesExists && Object.getPrototypeOf(new Map().entries());const arrayIteratorExists = symbolIteratorExists && typeof Array.prototype[Symbol.iterator] === 'function';const arrayIteratorPrototype = arrayIteratorExists && Object.getPrototypeOf([][Symbol.iterator]());const stringIteratorExists = symbolIteratorExists && typeof String.prototype[Symbol.iterator] === 'function';const stringIteratorPrototype = stringIteratorExists && Object.getPrototypeOf(''[Symbol.iterator]());const toStringLeftSliceLength = 8;const toStringRightSliceLength = -1;/** * ### typeOf (obj) * * Uses `Object.prototype.toString` to determine the type of an object, * normalising behaviour across engine versions & well optimised. * * @param {Mixed} object * @return {String} object type * @api public */export default function typeDetect(obj) { /* ! Speed optimisation * Pre: * string literal x 3,039,035 ops/sec ±1.62% (78 runs sampled) * boolean literal x 1,424,138 ops/sec ±4.54% (75 runs sampled) * number literal x 1,653,153 ops/sec ±1.91% (82 runs sampled) * undefined x 9,978,660 ops/sec ±1.92% (75 runs sampled) * function x 2,556,769 ops/sec ±1.73% (77 runs sampled) * Post: * string literal x 38,564,796 ops/sec ±1.15% (79 runs sampled) * boolean literal x 31,148,940 ops/sec ±1.10% (79 runs sampled) * number literal x 32,679,330 ops/sec ±1.90% (78 runs sampled) * undefined x 32,363,368 ops/sec ±1.07% (82 runs sampled) * function x 31,296,870 ops/sec ±0.96% (83 runs sampled) */ const typeofObj = typeof obj; if (typeofObj !== 'object') { return typeofObj; }
/* ! Speed optimisation * Pre: * null x 28,645,765 ops/sec ±1.17% (82 runs sampled) * Post: * null x 36,428,962 ops/sec ±1.37% (84 runs sampled) */ if (obj === null) { return 'null'; }
/* ! Spec Conformance * Test: `Object.prototype.toString.call(window)`` * - Node === "[object global]" * - Chrome === "[object global]" * - Firefox === "[object Window]" * - PhantomJS === "[object Window]" * - Safari === "[object Window]" * - IE 11 === "[object Window]" * - IE Edge === "[object Window]" * Test: `Object.prototype.toString.call(this)`` * - Chrome Worker === "[object global]" * - Firefox Worker === "[object DedicatedWorkerGlobalScope]" * - Safari Worker === "[object DedicatedWorkerGlobalScope]" * - IE 11 Worker === "[object WorkerGlobalScope]" * - IE Edge Worker === "[object WorkerGlobalScope]" */ if (obj === globalObject) { return 'global'; }
/* ! Speed optimisation * Pre: * array literal x 2,888,352 ops/sec ±0.67% (82 runs sampled) * Post: * array literal x 22,479,650 ops/sec ±0.96% (81 runs sampled) */ if ( Array.isArray(obj) && (symbolToStringTagExists === false || !(Symbol.toStringTag in obj)) ) { return 'Array'; }
// Not caching existence of `window` and related properties due to potential // for `window` to be unset before tests in quasi-browser environments. if (typeof window === 'object' && window !== null) { /* ! Spec Conformance * (https://html.spec.whatwg.org/multipage/browsers.html#location) * WhatWG HTML$7.7.3 - The `Location` interface * Test: `Object.prototype.toString.call(window.location)`` * - IE <=11 === "[object Object]" * - IE Edge <=13 === "[object Object]" */ if (typeof window.location === 'object' && obj === window.location) { return 'Location'; }
/* ! Spec Conformance * (https://html.spec.whatwg.org/#document) * WhatWG HTML$3.1.1 - The `Document` object * Note: Most browsers currently adher to the W3C DOM Level 2 spec * (https://www.w3.org/TR/DOM-Level-2-HTML/html.html#ID-26809268) * which suggests that browsers should use HTMLTableCellElement for * both TD and TH elements. WhatWG separates these. * WhatWG HTML states: * > For historical reasons, Window objects must also have a * > writable, configurable, non-enumerable property named * > HTMLDocument whose value is the Document interface object. * Test: `Object.prototype.toString.call(document)`` * - Chrome === "[object HTMLDocument]" * - Firefox === "[object HTMLDocument]" * - Safari === "[object HTMLDocument]" * - IE <=10 === "[object Document]" * - IE 11 === "[object HTMLDocument]" * - IE Edge <=13 === "[object HTMLDocument]" */ if (typeof window.document === 'object' && obj === window.document) { return 'Document'; }
if (typeof window.navigator === 'object') { /* ! Spec Conformance * (https://html.spec.whatwg.org/multipage/webappapis.html#mimetypearray) * WhatWG HTML$8.6.1.5 - Plugins - Interface MimeTypeArray * Test: `Object.prototype.toString.call(navigator.mimeTypes)`` * - IE <=10 === "[object MSMimeTypesCollection]" */ if (typeof window.navigator.mimeTypes === 'object' && obj === window.navigator.mimeTypes) { return 'MimeTypeArray'; }
/* ! Spec Conformance * (https://html.spec.whatwg.org/multipage/webappapis.html#pluginarray) * WhatWG HTML$8.6.1.5 - Plugins - Interface PluginArray * Test: `Object.prototype.toString.call(navigator.plugins)`` * - IE <=10 === "[object MSPluginsCollection]" */ if (typeof window.navigator.plugins === 'object' && obj === window.navigator.plugins) { return 'PluginArray'; } }
if ((typeof window.HTMLElement === 'function' || typeof window.HTMLElement === 'object') && obj instanceof window.HTMLElement) { /* ! Spec Conformance * (https://html.spec.whatwg.org/multipage/webappapis.html#pluginarray) * WhatWG HTML$4.4.4 - The `blockquote` element - Interface `HTMLQuoteElement` * Test: `Object.prototype.toString.call(document.createElement('blockquote'))`` * - IE <=10 === "[object HTMLBlockElement]" */ if (obj.tagName === 'BLOCKQUOTE') { return 'HTMLQuoteElement'; }
/* ! Spec Conformance * (https://html.spec.whatwg.org/#htmltabledatacellelement) * WhatWG HTML$4.9.9 - The `td` element - Interface `HTMLTableDataCellElement` * Note: Most browsers currently adher to the W3C DOM Level 2 spec * (https://www.w3.org/TR/DOM-Level-2-HTML/html.html#ID-82915075) * which suggests that browsers should use HTMLTableCellElement for * both TD and TH elements. WhatWG separates these. * Test: Object.prototype.toString.call(document.createElement('td')) * - Chrome === "[object HTMLTableCellElement]" * - Firefox === "[object HTMLTableCellElement]" * - Safari === "[object HTMLTableCellElement]" */ if (obj.tagName === 'TD') { return 'HTMLTableDataCellElement'; }
/* ! Spec Conformance * (https://html.spec.whatwg.org/#htmltableheadercellelement) * WhatWG HTML$4.9.9 - The `td` element - Interface `HTMLTableHeaderCellElement` * Note: Most browsers currently adher to the W3C DOM Level 2 spec * (https://www.w3.org/TR/DOM-Level-2-HTML/html.html#ID-82915075) * which suggests that browsers should use HTMLTableCellElement for * both TD and TH elements. WhatWG separates these. * Test: Object.prototype.toString.call(document.createElement('th')) * - Chrome === "[object HTMLTableCellElement]" * - Firefox === "[object HTMLTableCellElement]" * - Safari === "[object HTMLTableCellElement]" */ if (obj.tagName === 'TH') { return 'HTMLTableHeaderCellElement'; } } }
/* ! Speed optimisation * Pre: * Float64Array x 625,644 ops/sec ±1.58% (80 runs sampled) * Float32Array x 1,279,852 ops/sec ±2.91% (77 runs sampled) * Uint32Array x 1,178,185 ops/sec ±1.95% (83 runs sampled) * Uint16Array x 1,008,380 ops/sec ±2.25% (80 runs sampled) * Uint8Array x 1,128,040 ops/sec ±2.11% (81 runs sampled) * Int32Array x 1,170,119 ops/sec ±2.88% (80 runs sampled) * Int16Array x 1,176,348 ops/sec ±5.79% (86 runs sampled) * Int8Array x 1,058,707 ops/sec ±4.94% (77 runs sampled) * Uint8ClampedArray x 1,110,633 ops/sec ±4.20% (80 runs sampled) * Post: * Float64Array x 7,105,671 ops/sec ±13.47% (64 runs sampled) * Float32Array x 5,887,912 ops/sec ±1.46% (82 runs sampled) * Uint32Array x 6,491,661 ops/sec ±1.76% (79 runs sampled) * Uint16Array x 6,559,795 ops/sec ±1.67% (82 runs sampled) * Uint8Array x 6,463,966 ops/sec ±1.43% (85 runs sampled) * Int32Array x 5,641,841 ops/sec ±3.49% (81 runs sampled) * Int16Array x 6,583,511 ops/sec ±1.98% (80 runs sampled) * Int8Array x 6,606,078 ops/sec ±1.74% (81 runs sampled) * Uint8ClampedArray x 6,602,224 ops/sec ±1.77% (83 runs sampled) */ const stringTag = (symbolToStringTagExists && obj[Symbol.toStringTag]); if (typeof stringTag === 'string') { return stringTag; }
const objPrototype = Object.getPrototypeOf(obj); /* ! Speed optimisation * Pre: * regex literal x 1,772,385 ops/sec ±1.85% (77 runs sampled) * regex constructor x 2,143,634 ops/sec ±2.46% (78 runs sampled) * Post: * regex literal x 3,928,009 ops/sec ±0.65% (78 runs sampled) * regex constructor x 3,931,108 ops/sec ±0.58% (84 runs sampled) */ if (objPrototype === RegExp.prototype) { return 'RegExp'; }
/* ! Speed optimisation * Pre: * date x 2,130,074 ops/sec ±4.42% (68 runs sampled) * Post: * date x 3,953,779 ops/sec ±1.35% (77 runs sampled) */ if (objPrototype === Date.prototype) { return 'Date'; }
/* ! Spec Conformance * (http://www.ecma-international.org/ecma-262/6.0/index.html#sec-promise.prototype-@@tostringtag) * ES6$25.4.5.4 - Promise.prototype[@@toStringTag] should be "Promise": * Test: `Object.prototype.toString.call(Promise.resolve())`` * - Chrome <=47 === "[object Object]" * - Edge <=20 === "[object Object]" * - Firefox 29-Latest === "[object Promise]" * - Safari 7.1-Latest === "[object Promise]" */ if (promiseExists && objPrototype === Promise.prototype) { return 'Promise'; }
/* ! Speed optimisation * Pre: * set x 2,222,186 ops/sec ±1.31% (82 runs sampled) * Post: * set x 4,545,879 ops/sec ±1.13% (83 runs sampled) */ if (setExists && objPrototype === Set.prototype) { return 'Set'; }
/* ! Speed optimisation * Pre: * map x 2,396,842 ops/sec ±1.59% (81 runs sampled) * Post: * map x 4,183,945 ops/sec ±6.59% (82 runs sampled) */ if (mapExists && objPrototype === Map.prototype) { return 'Map'; }
/* ! Speed optimisation * Pre: * weakset x 1,323,220 ops/sec ±2.17% (76 runs sampled) * Post: * weakset x 4,237,510 ops/sec ±2.01% (77 runs sampled) */ if (weakSetExists && objPrototype === WeakSet.prototype) { return 'WeakSet'; }
/* ! Speed optimisation * Pre: * weakmap x 1,500,260 ops/sec ±2.02% (78 runs sampled) * Post: * weakmap x 3,881,384 ops/sec ±1.45% (82 runs sampled) */ if (weakMapExists && objPrototype === WeakMap.prototype) { return 'WeakMap'; }
/* ! Spec Conformance * (http://www.ecma-international.org/ecma-262/6.0/index.html#sec-dataview.prototype-@@tostringtag) * ES6$24.2.4.21 - DataView.prototype[@@toStringTag] should be "DataView": * Test: `Object.prototype.toString.call(new DataView(new ArrayBuffer(1)))`` * - Edge <=13 === "[object Object]" */ if (dataViewExists && objPrototype === DataView.prototype) { return 'DataView'; }
/* ! Spec Conformance * (http://www.ecma-international.org/ecma-262/6.0/index.html#sec-%mapiteratorprototype%-@@tostringtag) * ES6$23.1.5.2.2 - %MapIteratorPrototype%[@@toStringTag] should be "Map Iterator": * Test: `Object.prototype.toString.call(new Map().entries())`` * - Edge <=13 === "[object Object]" */ if (mapExists && objPrototype === mapIteratorPrototype) { return 'Map Iterator'; }
/* ! Spec Conformance * (http://www.ecma-international.org/ecma-262/6.0/index.html#sec-%setiteratorprototype%-@@tostringtag) * ES6$23.2.5.2.2 - %SetIteratorPrototype%[@@toStringTag] should be "Set Iterator": * Test: `Object.prototype.toString.call(new Set().entries())`` * - Edge <=13 === "[object Object]" */ if (setExists && objPrototype === setIteratorPrototype) { return 'Set Iterator'; }
/* ! Spec Conformance * (http://www.ecma-international.org/ecma-262/6.0/index.html#sec-%arrayiteratorprototype%-@@tostringtag) * ES6$22.1.5.2.2 - %ArrayIteratorPrototype%[@@toStringTag] should be "Array Iterator": * Test: `Object.prototype.toString.call([][Symbol.iterator]())`` * - Edge <=13 === "[object Object]" */ if (arrayIteratorExists && objPrototype === arrayIteratorPrototype) { return 'Array Iterator'; }
/* ! Spec Conformance * (http://www.ecma-international.org/ecma-262/6.0/index.html#sec-%stringiteratorprototype%-@@tostringtag) * ES6$21.1.5.2.2 - %StringIteratorPrototype%[@@toStringTag] should be "String Iterator": * Test: `Object.prototype.toString.call(''[Symbol.iterator]())`` * - Edge <=13 === "[object Object]" */ if (stringIteratorExists && objPrototype === stringIteratorPrototype) { return 'String Iterator'; }
/* ! Speed optimisation * Pre: * object from null x 2,424,320 ops/sec ±1.67% (76 runs sampled) * Post: * object from null x 5,838,000 ops/sec ±0.99% (84 runs sampled) */ if (objPrototype === null) { return 'Object'; }
return Object .prototype .toString .call(obj) .slice(toStringLeftSliceLength, toStringRightSliceLength);}