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Direktori : /proc/self/root/var/www/html/node_modules/is-callable/ |
Current File : //proc/self/root/var/www/html/node_modules/is-callable/index.js |
'use strict'; var fnToStr = Function.prototype.toString; var reflectApply = typeof Reflect === 'object' && Reflect !== null && Reflect.apply; var badArrayLike; var isCallableMarker; if (typeof reflectApply === 'function' && typeof Object.defineProperty === 'function') { try { badArrayLike = Object.defineProperty({}, 'length', { get: function () { throw isCallableMarker; } }); isCallableMarker = {}; // eslint-disable-next-line no-throw-literal reflectApply(function () { throw 42; }, null, badArrayLike); } catch (_) { if (_ !== isCallableMarker) { reflectApply = null; } } } else { reflectApply = null; } var constructorRegex = /^\s*class\b/; var isES6ClassFn = function isES6ClassFunction(value) { try { var fnStr = fnToStr.call(value); return constructorRegex.test(fnStr); } catch (e) { return false; // not a function } }; var tryFunctionObject = function tryFunctionToStr(value) { try { if (isES6ClassFn(value)) { return false; } fnToStr.call(value); return true; } catch (e) { return false; } }; var toStr = Object.prototype.toString; var fnClass = '[object Function]'; var genClass = '[object GeneratorFunction]'; var hasToStringTag = typeof Symbol === 'function' && !!Symbol.toStringTag; // better: use `has-tostringtag` /* globals document: false */ var documentDotAll = typeof document === 'object' && typeof document.all === 'undefined' && document.all !== undefined ? document.all : {}; module.exports = reflectApply ? function isCallable(value) { if (value === documentDotAll) { return true; } if (!value) { return false; } if (typeof value !== 'function' && typeof value !== 'object') { return false; } if (typeof value === 'function' && !value.prototype) { return true; } try { reflectApply(value, null, badArrayLike); } catch (e) { if (e !== isCallableMarker) { return false; } } return !isES6ClassFn(value); } : function isCallable(value) { if (value === documentDotAll) { return true; } if (!value) { return false; } if (typeof value !== 'function' && typeof value !== 'object') { return false; } if (typeof value === 'function' && !value.prototype) { return true; } if (hasToStringTag) { return tryFunctionObject(value); } if (isES6ClassFn(value)) { return false; } var strClass = toStr.call(value); return strClass === fnClass || strClass === genClass; };