bug(typings): typescript isolatedModules option not working anymore with 14.0.0 #46240
Description
Which @angular/* package(s) are the source of the bug?
router
Is this a regression?
Yes
Description
Previouly I could use "isolatedModules" flag to true in tsconfig without any issue:
"isolatedModules": true,Now I have those errors coming when I use ng serve:
Note that it fails also on cdk/material stuff
Please provide a link to a minimal reproduction of the bug
https://stackblitz.com/edit/angular-9sbnod?file=tsconfig.json
Please provide the exception or error you saw
Error: node_modules/@angular/router/index.d.ts:183:21 - error TS2748: Cannot access ambient const enums when the '--isolatedModules' flag is provided.
183 readonly type = EventType.ActivationEnd;
~~~~~~~~~
Error: node_modules/@angular/router/index.d.ts:201:21 - error TS2748: Cannot access ambient const enums when the '--isolatedModules' flag is provided.
201 readonly type = EventType.ActivationStart;
~~~~~~~~~
Error: node_modules/@angular/router/index.d.ts:592:21 - error TS2748: Cannot access ambient const enums when the '--isolatedModules' flag is provided.
592 readonly type = EventType.ChildActivationEnd;
~~~~~~~~~
Error: node_modules/@angular/router/index.d.ts:6100m:21 - error TS2748: Cannot access ambient const enums when the '--isolatedModules' flag is provided.
610 readonly type = EventType.ChildActivationStart;
~~~~~~~~~
Error: node_modules/@angular/router/index.d.ts:998:21 - error TS2748: Cannot access ambient const enums when the '--isolatedModules' flag is provided.
998 readonly type = EventType.GuardsCheckEnd;
~~~~~~~~~
Error: node_modules/@angular/router/index.d.ts:1025:21 - error TS2748: Cannot access ambient const enums when the '--isolatedModules' flag is provided.
1025 readonly type = EventType.GuardsCheckStart;
~~~~~~~~~
Error: node_modules/@angular/router/index.d.ts:1311:21 - error TS2748: Cannot access ambient const enums when the '--isolatedModules' flag is provided.
1311 readonly type = EventType.NavigationCancel;
~~~~~~~~~
Error: node_modules/@angular/router/index.d.ts:1335:21 - error TS2748: Cannot access ambient const enums when the '--isolatedModules' flag is provided.
1335 readonly type = EventType.NavigationEnd;
~~~~~~~~~
Error: node_modules/@angular/router/index.d.ts:1359:21 - error TS2748: Cannot access ambient const enums when the '--isolatedModules' flag is provided.
1359 readonly type = EventType.NavigationError;
~~~~~~~~~
Error: node_modules/@angular/router/index.d.ts:1396:21 - merror TS2748: Cannot access ambient const enums when the '--isolatedModules' flag is provided.
1396 readonly type = EventType.NavigationStart;
~~~~~~~~~
Error: node_modules/@angular/router/index.d.ts:1745:21 - error TS2748: Cannot access ambient const enums when the '--isolatedModules' flag is provided.
1745 readonly type = EventType.ResolveEnd;
~~~~~~~~~
Error: node_modules/@angular/router/index.d.ts:1773:21 - error TS2748: Cannot access ambient const enums when the '--isolatedModules' flag is provided.
1773 readonly type = EventType.ResolveStart;
~~~~~~~~~
Error: node_modules/@angular/router/index.d.ts:2146:21 - error TS2748: Cannot access ambient const enums when the '--isolatedModules' flag is provided.
2146 readonly type = EventType.RouteConfigLoadEnd;
~~~~~~~~~
Error: node_modules/@angular/router/index.d.ts:2163:21 - error TS2748: Cannot access ambient const enums when the '--isolatedModules' flag is provided.
2163 readonly type = EventType.RouteConfigLoadStart;
~~~~~~~~~
Error: node_modules/@angular/router/index.d.ts:3423:21 - error TS2748: Cannot access ambient const enums when the '--isolatedModules' flag is provided.
3423 readonly type = EventType.RoutesRecognized;
~~~~~~~~~
Error: node_modules/@angular/router/index.d.ts:3458:21 - error TS2748: Cannot access ambient const enums when the '--isolatedModules' flag is provided.
3458 readonly type = EventType.Scroll;
~~~~~~~~~
Please provide the environment you discovered this bug in (run ng version)
Angular CLI: 14.0.0
Node: 16.15.0
Package Manager: npm 8.5.5
OS: Windows 10 (WSL 2 on Ubuntu)
Angular: 14.0.0
- router
(- cdk/material also)
Typescript: 4.6.3
Anything else?
I think It can be reproduced on any project using router (or cdk/material) by putting "isolatedModules": true, in compilerOptions in tsconfig.
It was working perfectly fine previously on Angular 13.3.1.
I know that it was not said in documentation that it should work with this flag activated but there was previously not any contraindication as far as I know so it would be nice if it can continue to work with this flag.
Note that, as a workaround, I can set "skipLibCheck": true, in compilerOptions but I would prefer that it work without this flag if possible.