2 var $ = require('../internals/export');
3 var IS_PURE = require('../internals/is-pure');
4 var anObject = require('../internals/an-object');
5 var bind = require('../internals/function-bind-context');
6 var getMapIterator = require('../internals/get-map-iterator');
7 var iterate = require('../internals/iterate');
9 // `Set.prototype.some` method
10 // https://github.com/tc39/proposal-collection-methods
11 $({ target: 'Map', proto: true, real: true, forced: IS_PURE }, {
12 some: function some(callbackfn /* , thisArg */) {
13 var map = anObject(this);
14 var iterator = getMapIterator(map);
15 var boundFunction = bind(callbackfn, arguments.length > 1 ? arguments[1] : undefined, 3);
16 return iterate(iterator, function (key, value) {
17 if (boundFunction(value, key, map)) return iterate.stop();
18 }, undefined, true, true).stopped;