tc39/proposal-function-once

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Function.prototype.once for JavaScript ECMAScript Stage-1 Proposal. 2022. Co-champions: Hemanth HM; J. S. Choi. Rationale It is often useful to ensure that callbacks execute only once, no matter how many times are those callbacks called. To do this, developers frequently use “once” functions, which wrap around those callbacks and ensure they are called at most once. This proposal would standardize such a once function in the language core. Description The Function.prototype.once method would create...