esnext.map.some.js

'use strict';
var $ = require('../internals/export');
var bind = require('../internals/function-bind-context');
var aMap = require('../internals/a-map');
var iterate = require('../internals/map-iterate');

// `Map.prototype.some` method
// https://github.com/tc39/proposal-collection-methods
$({ target: 'Map', proto: true, real: true, forced: true }, {
  some: function some(callbackfn /* , thisArg */) {
    var map = aMap(this);
    var boundFunction = bind(callbackfn, arguments.length > 1 ? arguments[1] : undefined);
    return iterate(map, function (value, key) {
      if (boundFunction(value, key, map)) return true;
    }, true) === true;
  }
});