Typescript: Type 'Subscription' is not assignable to type 'Subscription'

[cozzbie]

TypeScript Version:

2.2.2

Code:

private ts:Subscription
this.ts = Keyboard.onKeyboardShow().subscribe(e => this.onShow(e));

Expected behavior:

Should work with no errors

Actual behavior:
Throws error

Type 'Subscription' is not assignable to type 'Subscription'. Two different types with this name exist, but they are unrelated. Property '_parent' is missing in type 'Subscription'.

Notes:

This just started happening after I upgraded Angular to 2.2.2 and rxjs to 5.1.1

[RyanCavanaugh]

Please provide a self-contained repro. We don't maintain the Angular or rxjs definition files, nor can we see your code

[marek1]

+1

[rodriguesgm]

same to me

[mhegazy]

@marek1 and @rodriguesgm please provide a self-contained repro we can use to investigate, otherwise, i am afraid this issue is not actionable for us.

[mhegazy]

Automatically closing this issue for housekeeping purposes. The issue labels indicate that it is unactionable at the moment or has already been addressed.

[metalraf]

i have same problem with videogular2 im trying to getisHidden status
this.subscriptions.push(this.hidden.isHidden.subscribe(this.onHideControls.bind(this)));

error Type 'Subscription' is not assignable to type 'Subscription'
Property '_parent' is missing in type 'Subsciption'

[vanillabridge]

I solved this problem by downgrading rxjs to 5.0.1

[GonzoBard]

I suddenly had the exact same problem in the code that had worked successfully before.
I just deleted import:
import {Subscription} from 'rxjs/Subscription';
re-imported and the error did not appear

[chalcrow]

Thanks @GonzoBard this was also my issue, following an upgrade from Angular 5.2 to Angular 6. I had the following import:

import { Observable, Subscription } from 'rxjs/Rx';

I had to delete this whole line, save the .ts file, re-add the line and save again, and this fixed the errors (deleting only Subscription from the import didn't work - I had to remove and re-add the whole line).

In _another_ case of this issue I had to replace this:

import { Subscription } from 'rxjs/Subscription';

with:

import { Subscription } from 'rxjs';

I had already followed the Angular upgrade step to 'Remove deprecated RxJS 6 features', by running the following:

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

Does anyone have an explanation for why these actions are required?

[ganqqwerty]

Seems like angular v8 is guilty in that error as well. Downgrading rxjs to "rxjs": "6.4.0" helped me.

[pflugich]

Had the same problem and found this solution on stackoverflow:

So, I'm not sure why this worked but I'm answering my own question just in case someone else runs into this issue.

I uninstalled rxjs
I re-installed rxjs
I deleted my node_modules folder
I deleted my package-lock.json
I ran npm clean cache --force
I ran npm install
Then everything started working again :)

[vitaly-t]

I'm using Angular 8.1, and the same issues cropped up.

Use of the exact following declaration solved the issue:

import {Subscription} from 'rxjs';

This imports the type from Angular declarations, so somehow the conflict isn't there anymore.