'use strict';
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var $ = require('../internals/export');
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var aCallable = require('../internals/a-callable');
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var aWeakMap = require('../internals/a-weak-map');
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var aWeakKey = require('../internals/a-weak-key');
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var WeakMapHelpers = require('../internals/weak-map-helpers');
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var IS_PURE = require('../internals/is-pure');
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var get = WeakMapHelpers.get;
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var has = WeakMapHelpers.has;
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var set = WeakMapHelpers.set;
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var FORCED = IS_PURE || !function () {
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try {
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// eslint-disable-next-line es/no-weak-map, no-throw-literal -- testing
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if (WeakMap.prototype.getOrInsertComputed) new WeakMap().getOrInsertComputed(1, function () { throw 1; });
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} catch (error) {
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// FF144 Nightly - Beta 3 bug
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// https://bugzilla.mozilla.org/show_bug.cgi?id=1988369
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return error instanceof TypeError;
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}
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}();
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// `WeakMap.prototype.getOrInsertComputed` method
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// https://github.com/tc39/proposal-upsert
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$({ target: 'WeakMap', proto: true, real: true, forced: FORCED }, {
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getOrInsertComputed: function getOrInsertComputed(key, callbackfn) {
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aWeakMap(this);
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aWeakKey(key);
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aCallable(callbackfn);
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if (has(this, key)) return get(this, key);
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var value = callbackfn(key);
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set(this, key, value);
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return value;
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}
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});
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