@angular/build: TS2307: Cannot find module 'firebase/compat'
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Description
I currently have an Angular 20 application with storage.
I tried to migrate to the new builder system and after running the migration script I get:
>
X [ERROR] TS2307: Cannot find module 'firebase/compat' or its corresponding type declarations. [plugin angular-compiler]
node_modules/.pnpm/@angular+fire@20.0.1_b3d6211399b528bde26c95436c0ed9a1/node_modules/@angular/fire/compat/storage/index.d.ts:9:33:
9 │ import * as firebase_compat from 'firebase/compat';
╵ ~~~~~~~~~~~~~~~~~
With `@angular-devkit/build-angular` it works fine.
Contributor guide
Research direction
Reproduce the Angular 20 migration with @angular/fire compat storage and compare the new builder with @angular-devkit/build-angular. Start from the referenced @angular/fire/compat/storage/index.d.ts import of firebase/compat and the builder migration output. Done means the migrated application builds without TS2307.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- angular, firebase, typescript
- Domain
- build-system
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 35/100