var uncurryThis = require('../internals/function-uncurry-this');
var iterateSimple = require('../internals/iterate-simple');
var MapHelpers = require('../internals/map-helpers');

var Map = MapHelpers.Map;
var MapPrototype = MapHelpers.proto;
var forEach = uncurryThis(MapPrototype.forEach);
var entries = uncurryThis(MapPrototype.entries);
var next = entries(new Map()).next;

module.exports = function (map, fn, interruptible) {
  return interruptible ? iterateSimple(entries(map), function (entry) {
    return fn(entry[1], entry[0]);
  }, next) : forEach(map, fn);
};