Class 'Subject' incorrectly extends base class 'Observable'

Question

For the sake of preventing downvotes, I will lorem-ipsum-elaborate on this error message:

I am using angular4 and out of the blue (well actually it's rather grey today) this error occured. Can anybody help? I already found similar issues on github, but no answers as to resolve the situation (I have tried "npm update" and "npm install")

Typescript version is 2.4.0

Additional error-messages are:

Class 'WebSocketSubject' incorrectly extends base class 'AnonymousSubject'

Types of property 'lift' are incompatible.

The location of the original error mnessage is given as "./node_modules/rxjs/Subject.d.ts"

This problem may be related to this: https://github.com/ReactiveX/rxjs/issues/2539 — Haseoh, Jul 04 '17 at 09:10

Tobias Gassmann · Accepted Answer · 2017-07-05T12:22:39.503

7

Think I solved it by the help of Haseoh's comment:

in the compiler-options for typescript (tsconfig.json) set

    "skipLibCheck": true

this is obviously a hack, but it solves my issue and I have grown accustomed to this kind of life since I started using angular2

edited Jul 05 '17 at 12:22

answered Jul 04 '17 at 09:18

Tobias Gassmann

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Yup, this is legit hack. It seems we have to wait for official fix :) – Haseoh Jul 04 '17 at 09:21
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I believe the preferred work-around is `noStrictGenericChecks`. – Jul 04 '17 at 09:27
("skipLibCheck": true ) It's really working, Thanks – Hemant Soni Sep 22 '17 at 12:51

Class 'Subject' incorrectly extends base class 'Observable'

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