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| 'use strict';
| var $ = require('../internals/export');
| var aMap = require('../internals/a-map');
| var MapHelpers = require('../internals/map-helpers');
|
| var get = MapHelpers.get;
| var has = MapHelpers.has;
| var set = MapHelpers.set;
|
| // `Map.prototype.getOrInsert` method
| // https://github.com/tc39/proposal-upsert
| $({ target: 'Map', proto: true, real: true, forced: true }, {
| getOrInsert: function getOrInsert(key, value) {
| if (has(aMap(this), key)) return get(this, key);
| set(this, key, value);
| return value;
| }
| });
|
|
