Summary:
Extending a tsconfig seems simpler than adding `compilerOptions` with `customConditions`.
### Before
```jsonc
{
"extends": "react-native/typescript-config",
"compilerOptions": {
// ...
"customConditions": ["react-native-strict-api", "react-native"]
}
}
```
### After
```jsonc
{
"extends": "react-native/typescript-config/strict"
// ...
}
```
## Changelog:
[GENERAL] [ADDED] - Add `react-native/typescript-config/strict` export enabling the `react-native-strict-api` custom condition.
Pull Request resolved: https://github.com/facebook/react-native/pull/53564
Test Plan:
### `package.json`
```
{
"name": "react-native-ts-test",
"private": true,
"version": "0.1.0",
"scripts": {
"build": "tsc --noEmit"
},
"devDependencies": {
"react-native/typescript-config": "^0.81.1",
"typescript": "^5.9.2",
"jest": "^30.1.2"
},
"dependencies": {
"react-native": "^0.81.1"
}
}
```
### `tsconfig.json`
```
{
"extends": "react-native/typescript-config/strict",
"include": ["src/index.ts"]
}
```
### `src/index.ts`
```
import { View } from "react-native";
```
Run `npx resolution-explorer` and select "react-native from src/index.ts to node_modules/react-native/types_generated/index.d.ts" to verify the types are resolved correctly.
```
Explicitly specified module resolution kind: 'Bundler'.
Resolving in CJS mode with conditions 'import', 'types', 'react-native-strict-api'.
File '/Users/kraen.hansen/Repositories/react-native-ts-test/src/package.json' does not exist.
Found 'package.json' at '/Users/kraen.hansen/Repositories/react-native-ts-test/package.json'.
Loading module 'react-native' from 'node_modules' folder, target file types: TypeScript, JavaScript, Declaration, JSON.
Searching all ancestor node_modules directories for preferred extensions: TypeScript, Declaration.
Directory '/Users/kraen.hansen/Repositories/react-native-ts-test/src/node_modules' does not exist, skipping all lookups in it.
Found 'package.json' at '/Users/kraen.hansen/Repositories/react-native-ts-test/node_modules/react-native/package.json'.
Entering conditional exports.
Matched 'exports' condition 'react-native-strict-api'.
Using 'exports' subpath '.' with target './types_generated/index.d.ts'.
File '/Users/kraen.hansen/Repositories/react-native-ts-test/node_modules/react-native/types_generated/index.d.ts' exists - use it as a name resolution result.
'package.json' has a 'peerDependencies' field.
Resolving real path for '/Users/kraen.hansen/Repositories/react-native-ts-test/node_modules/react-native', result
'/Users/kraen.hansen/Repositories/react-native-ts-test/node_modules/react-native'.
Failed to find peerDependency 'types/react'.
Found 'package.json' at '/Users/kraen.hansen/Repositories/react-native-ts-test/node_modules/react/package.json'.
Found peerDependency 'react' with '19.1.1' version.
Resolved under condition 'react-native-strict-api'.
Exiting conditional exports.
Resolving real path for '/Users/kraen.hansen/Repositories/react-native-ts-test/node_modules/react-native/types_generated/index.d.ts', result
'/Users/kraen.hansen/Repositories/react-native-ts-test/node_modules/react-native/types_generated/index.d.ts'.
======== Module name 'react-native' was successfully resolved to
'/Users/kraen.hansen/Repositories/react-native-ts-test/node_modules/react-native/types_generated/index.d.ts' with Package ID
'react-native/types_generated/index.d.ts@0.81.1+react@19.1.1'. ========
```
Reviewed By: robhogan
Differential Revision: D82791201
Pulled By: philIip
fbshipit-source-id: f58d3b8fcf3d7f18dd29eef18a3c8c0cb57d1d78
Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/37345
This moves from `tsconfig/react-native`, a centralized repository of tsconfigs, to `react-native/typescript-config`, a package maintained as part of the RN monorepo.
We end up wanting to make changes where the versions are coupled, so this publishes them as part of the same repo, etc. It also means Meta engineers can more freely make changes to it with normal approval processes.
Changelog:
[General][Added] - Add react-native/typescript-config
Reviewed By: cortinico
Differential Revision: D45721088
fbshipit-source-id: b949bffb14014695abf3b9b359d3f5e30bfc8919
Kræn Hansen
Nick Gerleman