sink._addParentTeardownLogic is not a function rxjs node 6.3.2 and 6.2.2

[alan-agius4]

Bug Report

Current Behavior

sink._addParentTeardownLogic is not a function

When using rxjs 6.2.2 and 6.3.2.

npm list rxjs

rxjs-tear-down-logic@1.0.0 
+-- fakes-dependency@1.0.0
| `-- rxjs@6.3.2
`-- rxjs@6.2.2

Reproduction

• https://github.com/alan-agius4/rxjs-teardown-logic-issue
• npm i
• npm start

rxjs 6.3.2

const rxjs = require('rxjs');

const result = new rxjs.Observable(obs => {
	return rxjs.of(undefined).subscribe(obs)
})

module.exports = { result: result }

rxjs 6.2.2

const rxjs = require('rxjs');
const dependency = require('fakes-dependency');
const rxjs_operators = require('rxjs/operators');

rxjs.of(undefined).pipe(
	rxjs_operators.concatMap(() => dependency.result),
).toPromise()

Expected behavior
No Error

Environment

• Runtime: Node v 8.9
• RxJS version: 6.2.2 and 6.3.2

[benlesh]

cc @cartant ... This is an issue with identifying a "trusted subscriber" between two different versions of RxJS. Basically one RxJS's Subscriber gets a Subscriber from the other RxJS (which doesn't have _addParentTeardownLogic)

This is directly related to our discussion yesterday that _addParentTeardownLogic is probably the wrong solution and needs to be removed/replaced.

[benlesh]

#4106 is related to this. It should help resolve the issue.

[alan-agius4]

Confirmed that it has been resolved in 6.3.3