Warning: Redundant import of RxJS detected

After upgrading from RxJS 5 to 6, I used the migration tool to update my code:

rxjs-5-to-6-migrate -p tsconfig.json

Upon completion, I encountered a series of messages like this:

WARNING: /path/to/file.ts[3, 1]: duplicate RxJS import

It seems like this warning appears for every file in my project that imports more than one item from rxjs (e.g. 

import {Observable, BehaviorSubject} from "rxjs"
). The migration guide includes multiple imports as an example, so I assumed it should be acceptable. A quick Google search only yielded one single result for the warning message, and it does not seem to address the same issue (none of the files have any deprecated imports).

What exactly does this warning mean, and should I be concerned about it?

angulartypescriptmigrationrxjs

Answer №1

If you encounter issues, try running these commands again for a potential solution:

npm install -g rxjs-tslint
npm install rxjs-tslint
rxjs-5-to-6-migrate -p src/tsconfig.app.json

In the event of the worst-case scenario, you can include the compatibility package:

npm install --save rxjs-compat

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