Open
Description
Which @angular/* package(s) are the source of the bug?
router
Is this a regression?
No
Description
On ActivatedRoute the params member of type Params is readonly, but its type doesn't specify that it is readonly, See Router shared.ts.
Check https://github.com/cubimon/angular-readonly-params/blob/master/src/app/app.component.ts, go to http://localhost:4200/test;a=b
Please provide a link to a minimal reproduction of the bug
https://github.com/cubimon/angular-readonly-params/blob/master/src/app/app.component.ts
Please provide the exception or error you saw
TypeError: Cannot assign to read only property 'id' of object '[object Object]'
Please provide the environment you discovered this bug in (run ng version)
Angular CLI: 18.2.14
Node: 18.20.6
Package Manager: npm 10.8.2
OS: win32 x64
Angular: 18.2.13
... animations, common, compiler, compiler-cli, core, forms
... platform-browser, platform-browser-dynamic, router
Package Version
---------------------------------------------------------
@angular-devkit/architect 0.1802.14
@angular-devkit/build-angular 18.2.14
@angular-devkit/core 18.2.14
@angular-devkit/schematics 18.2.14
@angular/cli 18.2.14
@schematics/angular 18.2.14
rxjs 7.8.1
typescript 5.5.4
zone.js 0.14.10
Anything else?
This is a minor issue that could be easily resolved by using readonly Keyword