Different versions of RxJS not supported #14579
Description
🐞 Bug report
Command (mark with an x)
- [ ] new
- [ ] build
- [ ] serve
- [ ] test
- [ ] e2e
- [ ] generate
- [ ] add
- [ ] update
- [ ] lint
- [ ] xi18n
- [ ] run
- [ ] config
- [ ] help
- [ ] version
- [ ] doc
Is this a regression?
No
Description
The Angular CLI ecosystem supports only one version of RxJS which is 6.4.0.
I expect different versions of RxJS to be supported because Angular itself supports a broader range of RxJS versions (^6.4.0)
🔬 Minimal Reproduction
https://github.com/ahasall/rxjs-v6.4-v6.5-bug
yarn install
yarn build🔥 Exception or Error
If you use RxJS v6.5.2 and a library that depends on RxJS v6.4.0, you may get a TS2322 error.
For example, when working with the new Architect API, I encounter the following error:
Type 'Observable' is not assignable to type 'BuilderOutputLike' while
export declare type BuilderOutputLike = Observable<BuilderOutput> | Promise<BuilderOutput> | BuilderOutput;🌍 Your Environment
@angular-devkit/architect 0.800.0
@angular-devkit/build-angular 0.800.0
@angular-devkit/build-ng-packagr 0.800.0
@angular-devkit/build-optimizer 0.800.0
@angular-devkit/build-webpack 0.800.0
@angular-devkit/core 8.0.0
@angular-devkit/schematics 8.0.0
@ngtools/json-schema 1.1.0
@ngtools/webpack 8.0.0
@schematics/angular 8.0.0
@schematics/update 0.800.0
ng-packagr 5.2.0
rxjs 6.5.2
typescript 3.5.1
webpack 4.30.0
Anything else relevant?
A workaround for people encountering this issue is to downgrade their version of RxJS to 6.4.0