basant307/AI_Governance_Project

1'use strict';2 3var fnToStr = Function.prototype.toString;4var reflectApply = typeof Reflect === 'object' && Reflect !== null && Reflect.apply;5var badArrayLike;6var isCallableMarker;7if (typeof reflectApply === 'function' && typeof Object.defineProperty === 'function') {8	try {9		badArrayLike = Object.defineProperty({}, 'length', {10			get: function () {11				throw isCallableMarker;12			}13		});14		isCallableMarker = {};15		// eslint-disable-next-line no-throw-literal16		reflectApply(function () { throw 42; }, null, badArrayLike);17	} catch (_) {18		if (_ !== isCallableMarker) {19			reflectApply = null;20		}21	}22} else {23	reflectApply = null;24}25 26var constructorRegex = /^\s*class\b/;27var isES6ClassFn = function isES6ClassFunction(value) {28	try {29		var fnStr = fnToStr.call(value);30		return constructorRegex.test(fnStr);31	} catch (e) {32		return false; // not a function33	}34};35 36var tryFunctionObject = function tryFunctionToStr(value) {37	try {38		if (isES6ClassFn(value)) { return false; }39		fnToStr.call(value);40		return true;41	} catch (e) {42		return false;43	}44};45var toStr = Object.prototype.toString;46var objectClass = '[object Object]';47var fnClass = '[object Function]';48var genClass = '[object GeneratorFunction]';49var ddaClass = '[object HTMLAllCollection]'; // IE 1150var ddaClass2 = '[object HTML document.all class]';51var ddaClass3 = '[object HTMLCollection]'; // IE 9-1052var hasToStringTag = typeof Symbol === 'function' && !!Symbol.toStringTag; // better: use `has-tostringtag`53 54var isIE68 = !(0 in [,]); // eslint-disable-line no-sparse-arrays, comma-spacing55 56var isDDA = function isDocumentDotAll() { return false; };57if (typeof document === 'object') {58	// Firefox 3 canonicalizes DDA to undefined when it's not accessed directly59	var all = document.all;60	if (toStr.call(all) === toStr.call(document.all)) {61		isDDA = function isDocumentDotAll(value) {62			/* globals document: false */63			// in IE 6-8, typeof document.all is "object" and it's truthy64			if ((isIE68 || !value) && (typeof value === 'undefined' || typeof value === 'object')) {65				try {66					var str = toStr.call(value);67					return (68						str === ddaClass69						|| str === ddaClass270						|| str === ddaClass3 // opera 12.1671						|| str === objectClass // IE 6-872					) && value('') == null; // eslint-disable-line eqeqeq73				} catch (e) { /**/ }74			}75			return false;76		};77	}78}79 80module.exports = reflectApply81	? function isCallable(value) {82		if (isDDA(value)) { return true; }83		if (!value) { return false; }84		if (typeof value !== 'function' && typeof value !== 'object') { return false; }85		try {86			reflectApply(value, null, badArrayLike);87		} catch (e) {88			if (e !== isCallableMarker) { return false; }89		}90		return !isES6ClassFn(value) && tryFunctionObject(value);91	}92	: function isCallable(value) {93		if (isDDA(value)) { return true; }94		if (!value) { return false; }95		if (typeof value !== 'function' && typeof value !== 'object') { return false; }96		if (hasToStringTag) { return tryFunctionObject(value); }97		if (isES6ClassFn(value)) { return false; }98		var strClass = toStr.call(value);99		if (strClass !== fnClass && strClass !== genClass && !(/^\[object HTML/).test(strClass)) { return false; }100		return tryFunctionObject(value);101	};102