IsConstructor.js 290 B

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  1. 'use strict';
  2. // https://www.ecma-international.org/ecma-262/6.0/#sec-isconstructor
  3. module.exports = function IsConstructor(argument) {
  4. return typeof argument === 'function' && !!argument.prototype; // unfortunately there's no way to truly check this without try/catch `new argument`
  5. };