Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/36345
`exactOptionalPropertyTypes` is a TypeScript 4.4+ option set by users which changes behavior of optional properties, to disable accepting explicit `undefined`.
This is not enabled when using `--strict`, and is stricter than Flow, leading to most of the typings having an `| undefined` unique to TypeScript (added with https://github.com/DefinitelyTyped/DefinitelyTyped/commit/694c663a9486dbe7794d5eb894a691ee9ded318a).
We have not always followed this (I have myself previously assumed the two are equivalent). We can enforce that the convention is followed with a plugin `eslint-plugin-redundant-undefined`. This forces us to declare that every optional property accepts an explicit undefined (which Flow would allow). Alternatively, if we do not want to support this, we can enable the existing dtslint rule `no-redundant-undefined`.
Changelog:
[General][Fixed] - Enforce compatibility with `exactOptionalPropertyTypes`
Reviewed By: lunaleaps
Differential Revision: D43700862
fbshipit-source-id: 996094762b28918177521a9471d868ba87f0f263
Summary:
Add minimum necessary .d.ts files to react-native-codegen.
I found .d.ts files will be copied to `lib` so I guess no additional script is needed.
## Changelog
[GENERAL] [CHANGED] - Add minimum necessary .d.ts files to react-native-codegen
Pull Request resolved: https://github.com/facebook/react-native/pull/36102
Test Plan: `npm run build` in `packages/react-native-codegen` and see all .d.ts files appear in `lib`.
Reviewed By: cortinico
Differential Revision: D43157233
Pulled By: cipolleschi
fbshipit-source-id: 6f122f0f4cda693ba22af6dd534e9d34d069ecac
Nick Gerleman
Zihan Chen (MSFT)