Angular signal input migration fails with "extends": "@tsconfig/strictest/tsconfig.json" in tsconfig #59348
Description
Which @angular/* package(s) are the source of the bug?
core
Is this a regression?
Yes
Description
When running the Angular Migration to signal inputs
ng generate @angular/core:signal-input-migration
the operations fails with the following error:
Tsconfig could not be parsed or is invalid:
File '@tsconfig/strictest/tsconfig.json' not found.
After removing the line
"extends": "@tsconfig/strictest/tsconfig.json"
from tsconfig.common.json, the operations completes successfully.
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: 19.0.6
Node: 22.12.0
Package Manager: npm 10.9.0
OS: win32 x64
Angular: 19.0.5
... animations, common, compiler, compiler-cli, core, forms
... language-service, platform-browser, platform-browser-dynamic
... router
Package Version
--------------------------------------------------------------
@angular-devkit/architect 0.1900.6
@angular-devkit/build-angular 19.0.6
@angular-devkit/core 19.0.6
@angular-devkit/schematics 19.0.6
@angular/cdk 19.0.4
@angular/cli 19.0.6
@angular/material 19.0.4
@angular/material-date-fns-adapter 19.0.4
@schematics/angular 19.0.6
rxjs 7.8.1
typescript 5.6.3
zone.js 0.15.0
Anything else?
No response