Object.values and Object.entries are unsound and inconsistent with Object.keys.

Search Terms:
Object.values Object.entries sound soundness unsound inconsistent Object.keys

Code
Proposed change: https://github.com/MicahZoltu/TypeScript/commit/603c36370c7fdcd142b1493ca8cbbb955db73b69

Related Issues:
#12207
#12253

Back in November 2016, a PR (#12207) was submitted to make the types of Object.entries and Object.values generic. This PR was reviewed and accepted, and as a note it was recommended that Object.keys be updated similarly. The author then submitted a PR to update Object.keys (#12253) but @ahejlsberg made the very valid point that this change was unsound and the PR was closed. The author of both PRs then suggested that perhaps #12207 should be reverted, but this revert never happened.

This issue is to discuss options for rectifying this situation and I propose we make Object.entries and Object.values consistent with the sound behavior of Object.keys. The major issue here is that this IS a breaking change since people may be relying on the currently unsound behavior of Object.values and Object.entries. However, I think having TypeScript be inconsistent on this front indefinitely is not good, and I don't think changing Object.keys to be unsound is the right solution, so at the least this change should be merged into TS 4.x.

Nell’issue non sono identificati file sorgente, test o punti di ingresso. Inizia leggendo il commit proposto, le issue correlate #12207 e #12253 e la discussione su soundness e breaking changes. Il lavoro è completato quando il progetto avrà concordato un comportamento concreto e coerente per Object.values e Object.entries.