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@john8329
Please provide the environment you discovered this bug in (run
Description
Which @angular/* package(s) are the source of the bug?
upgrade
Is this a regression?
Yes
Description
After upgrading to Angular 19, one of the migrations was to set "moduleResolution": "bundler", in tsconfig.json. This broke basic type inference in all RxJS Observables. The only reasonable solution I found was to upgrade to the unsupported version "rxjs": "~7.5.0",. Perhaps Angular should recommend that in the documentation?
Oddly I didn't find anything related to this anywhere. I can reproduce this systematically just by changing rxjs' version. Perhaps it could be also due to some other setting in tsconfig, so I'm adding it too.
Thanks
Please provide a link to a minimal reproduction of the bug
No response
Please provide the exception or error you saw
Please provide the environment you discovered this bug in (run ng version)
Angular CLI: 19.2.15
Node: 22.15.0
Package Manager: yarn 4.6.0
OS: darwin arm64
Angular: 19.2.14
... animations, common, compiler, compiler-cli, core, forms
... language-service, platform-browser, platform-browser-dynamic
... router, service-worker
Package Version
------------------------------------------------------
@angular-devkit/architect 0.1802.20
@angular-devkit/core 18.2.20
@angular-devkit/schematics 19.2.15
@angular/build 19.2.15
@angular/cdk 18.2.14
@angular/cli 19.2.15
@schematics/angular 19.2.15
rxjs 7.4.0
typescript 5.8.3
zone.js 0.15.1
Anything else?
{
"compileOnSave": false,
"compilerOptions": {
"baseUrl": "./",
"forceConsistentCasingInFileNames": true,
"strict": true,
"noImplicitReturns": true,
"esModuleInterop": true,
"noImplicitAny": false,
"noFallthroughCasesInSwitch": false,
"sourceMap": true,
"declaration": false,
"experimentalDecorators": true,
"inlineSources": true,
"resolveJsonModule": true,
"moduleResolution": "bundler",
"importHelpers": true,
"target": "ES2022",
"module": "esnext",
"lib": [
"ES2022",
"dom"
],
"paths": {},
"useDefineForClassFields": false
},
"exclude": [
"**/*.spec.ts",
"src/**/*.e2e.ts"
],
"angularCompilerOptions": {
"strictInjectionParameters": true,
"strictInputAccessModifiers": true,
"strictTemplates": true,
"trace": false
}
}
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