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proc
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self
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root
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usr
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lib
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node_modules
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npm
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node_modules
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is-callable
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Upload File:
files >> //proc/self/root/usr/lib/node_modules/npm/node_modules/is-callable/index.js
'use strict'; var fnToStr = Function.prototype.toString; 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' && typeof Symbol.toStringTag === 'symbol'; module.exports = function isCallable(value) { 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; };
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