How long does it take for methods that become standardized to move to actual?

[SirzBenjie]

Hello,
Thanks for all the work on the project.

I'm just wondering, how long does it take for something to move out of proposals and become standardized? I'm new-ish to the Javascript ecosystem (only about 2yrs of it), and I notice that, for example, the set methods are still in proposals instead of actual even though they were standardized in 2024. Is this due to the version of them? Are they not yet really standardized?

[zloirock]

/actual/ core-js namespace means all standardized features from ECMAScript, the rest web standards, and also stage 3 ECMAScript proposals.

Proposals are divided into stages. Stage 4 means that the proposal is finished and accepted into the standard. Advance to stage 4 doesn't mean that an entry from /proposals/ should be removed - it's a breaking change for those who use it, and it could usefull for different cases. Even Array.prototype.includes which was standardized for ES2016 has an entry in /proposals/.

So, for example, the set methods available in all - /es/, /stable/, /actual/, /full/ namespaces, and have an entry in /proposals/.