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index.js 261B

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  1. 'use strict';
  2. var toString = Object.prototype.toString;
  3. module.exports = function (x) {
  4. var prototype;
  5. return toString.call(x) === '[object Object]' && (prototype = Object.getPrototypeOf(x), prototype === null || prototype === Object.getPrototypeOf({}));
  6. };