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Dev server is not terminated in case of TypeScript version mismatch聽#18392
Description
馃悶 Bug report
Command
- serve
Is this a regression?
No, I've seen it in older version of Angular CLI.
Description
After updating TypeScript version to the one that is not supported by Angular Compiler, there is an error that is being thrown in terminal after running ng serve, but the dev server is not terminated, thus leading to some confusion on whether the error is actually fatal or not. Trying to access the webpage (root/index one) results in a error as well (Cannot GET /).
馃敩 Minimal Reproduction
- Create an app using
ng new - Change the version of the "typescript" package to the one outside of the supported range (like
4.0.0-beta) inpackage.json - Run
ng serve
馃敟 Exception or Error
ERROR in The Angular Compiler requires TypeScript >=3.9.2 and <4.0.0 but 4.0.0-beta was found instead.
** Angular Live Development Server is listening on localhost:4200, open your browser on http://localhost:4200/ **
馃實 Your Environment
Angular CLI: 9.1.8
Node: 13.3.0
OS: darwin x64
Angular: 10.0.5
... animations, common, compiler, compiler-cli, core, forms
... language-service, platform-browser, platform-browser-dynamic
... router
Ivy Workspace: Yes
Package Version
-----------------------------------------------------------
@angular-devkit/architect 0.1000.4
@angular-devkit/build-angular 0.1000.4
@angular-devkit/build-optimizer 0.1000.4
@angular-devkit/build-webpack 0.1000.4
@angular-devkit/core 10.0.4
@angular-devkit/schematics 10.0.4
@angular/cli 10.0.4
@ngtools/webpack 10.0.4
@schematics/angular 10.0.4
@schematics/update 0.1000.4
rxjs 6.5.5
typescript 4.0.0-beta
webpack 4.43.0
Activity
angular-automatic-lock-bot commentedon Dec 6, 2020
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