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- 'use strict';
- // TODO: remove from `core-js@4`
- var $ = require('../internals/export');
- var upsert = require('../internals/map-upsert');
-
- // `WeakMap.prototype.upsert` method (replaced by `WeakMap.prototype.emplace`)
- // https://github.com/tc39/proposal-upsert
- $({ target: 'WeakMap', proto: true, real: true, forced: true }, {
- upsert: upsert
- });
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