emoji-mart-lazyload/src/polyfills/inherits.js

const _Object = Object

module.exports = function inherits(subClass, superClass) {
  if (typeof superClass !== "function" && superClass !== null) {
    throw new TypeError("Super expression must either be null or a function, not " + typeof superClass);
  }

  subClass.prototype = _Object.create(superClass && superClass.prototype, {
    constructor: {
      value: subClass,
      enumerable: false,
      writable: true,
      configurable: true
    }
  });
  if (superClass) {
    _Object.setPrototypeOf ? _Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass;
  }
};