But these proposals need to be tried out in an implementation to see how well they actually work in practice.įor instance, the proposal to be able to work backward through an array starting with the last element the way you can in Python is currently implemented as a polyfill, in an attempt to discover if it clashes with any commonly used JavaScript frameworks. And you can get an idea of what other features may make it into ECMAScript 2022 by looking at which have reached stage three, where the spec has been signed off and the tests have been passed. That will include all the new feature proposals that have reached stage four by March 2022 - proposals that have been signed off by the ECMAScript editors, passed the test suite and shipped in at least two implementations.Ī handful of proposals are already at that stage. JavaScript continues to evolve, and the next annual update to ECMAScript, which formally standardizes the JavaScript language, will be approved in July 2022. Editor’s Note: This article has been updated to clarify which private class proposals have already reached stage four.
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