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

const _Object = Object

export default _Object.assign ||
  function(target) {
    for (var i = 1; i < arguments.length; i++) {
      var source = arguments[i]

      for (var key in source) {
        if (Object.prototype.hasOwnProperty.call(source, key)) {
          target[key] = source[key]
        }
      }
    }

    return target
  }