basant307/AI_Governance_Project

1'use strict';2 3/* !4 * Chai - getFuncName utility5 * Copyright(c) 2012-2016 Jake Luer <jake@alogicalparadox.com>6 * MIT Licensed7 */8 9/**10 * ### .getFuncName(constructorFn)11 *12 * Returns the name of a function.13 * When a non-function instance is passed, returns `null`.14 * This also includes a polyfill function if `aFunc.name` is not defined.15 *16 * @name getFuncName17 * @param {Function} funct18 * @namespace Utils19 * @api public20 */21 22var toString = Function.prototype.toString;23var functionNameMatch = /\s*function(?:\s|\s*\/\*[^(?:*\/)]+\*\/\s*)*([^\s\(\/]+)/;24var maxFunctionSourceLength = 512;25function getFuncName(aFunc) {26  if (typeof aFunc !== 'function') {27    return null;28  }29 30  var name = '';31  if (typeof Function.prototype.name === 'undefined' && typeof aFunc.name === 'undefined') {32    // eslint-disable-next-line prefer-reflect33    var functionSource = toString.call(aFunc);34    // To avoid unconstrained resource consumption due to pathalogically large function names,35    // we limit the available return value to be less than 512 characters.36    if (functionSource.indexOf('(') > maxFunctionSourceLength) {37      return name;38    }39    // Here we run a polyfill if Function does not support the `name` property and if aFunc.name is not defined40    var match = functionSource.match(functionNameMatch);41    if (match) {42      name = match[1];43    }44  } else {45    // If we've got a `name` property we just use it46    name = aFunc.name;47  }48 49  return name;50}51 52module.exports = getFuncName;53