Add Map and WeakMap upsert methods #1156
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Implement the new methods from https://github.com/tc39/proposal-upsert: - Map.prototype.getOrInsert - Map.prototype.getOrInsertComputed - WeakMap.prototype.getOrInsert - WeakMap.prototype.getOrInsertComputed
saghul
approved these changes
Sep 23, 2025
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Implement the new methods from https://github.com/tc39/proposal-upsert: