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Fixes the BreakpointObserver completing subscribers that come after the current one, if one of the preceding subscribers unsubscribes. The issue seems to come from the way we store the listener in order to remove it later on. These changes switch to creating the Observable ourselves, rather than going through fromEventPattern so that we have more control over the event handler.

Fixes #14983.

…n preceding subscriber unsubscribes

Fixes the `BreakpointObserver` completing subscribers that come after the current one, if one of the preceding subscribers unsubscribes. The issue seems to come from the way we store the listener in order to remove it later on. These changes switch to creating the `Observable` ourselves, rather than going through `fromEventPattern` so that we have more control over the event handler.

Fixes angular#14983.
@crisbeto crisbeto added the target: patch This PR is targeted for the next patch release label Jan 28, 2019
@googlebot googlebot added the cla: yes PR author has agreed to Google's Contributor License Agreement label Jan 28, 2019
@crisbeto crisbeto mentioned this pull request Feb 1, 2019
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LGTM

@josephperrott josephperrott added pr: lgtm action: merge The PR is ready for merge by the caretaker labels Feb 7, 2019
@jelbourn jelbourn merged commit 0d054db into angular:master Feb 12, 2019
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action: merge The PR is ready for merge by the caretaker cla: yes PR author has agreed to Google's Contributor License Agreement target: patch This PR is targeted for the next patch release

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BreakPointObserver doesn't emit for last subscription if take(1) was used for a previous one

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