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fix(ngUpgrade): prevent digest already in progress #9054

merged 1 commit into from Jun 7, 2016


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thelgevold commented Jun 7, 2016

**This is a resubmit of #9046

Please check if the PR fulfills these requirements

What kind of change does this PR introduce? (Bug fix, feature, docs update, ...)

  • [x ] Bugfix
  • Feature
  • Code style update (formatting, local variables)
  • Refactoring (no functional changes, no api changes)
  • Build related changes
  • CI related changes
  • Other... Please describe:

What is the current behavior? (You can also link to an open issue here)
Under certain conditions ngUpgrade will throw "digest already in progress" errors. Seems to be related to overlapping digest cycles between ngUpgrade and the Angular 1 application.
Repro here:

What is the new behavior?
By using $evalAsync, digest cycles will no longer overlap since Angular will check if a digest cycle is already in progress before triggering a new one. If a digest is already a progress the ngUpgrade update will just join the existing cycle.

Does this PR introduce a breaking change?

  • Yes
  • No

If this PR contains a breaking change, please describe the impact and migration path for existing applications: ...

Other information:

fix(ngUpgrade): prevent digest already in progress
@googlebot googlebot added the cla: yes label Jun 7, 2016
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thelgevold commented Jun 7, 2016

@mhevery @chuckjaz
Sorry about the failing test in my previous PR. I am resubmitting with a fix.

Basically I switched from $applyAsync to $evalAsync. This passes the tests and still fixes the original issue.

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andreialecu commented Jun 7, 2016

I have the same issue and just tried this PR.

Interestingly, I have a fairly complex angular1+angular2 hybrid app and this one liner not only fixed the problem but also seems to have helped performance a lot!

I guess there were a lot of digests happening in very close succession triggered by this which are now better consolidated.

LGTM pls? :)


@mhevery mhevery merged commit 7cefec7 into angular:master Jun 7, 2016
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marcalj commented Jun 8, 2016

This will land in rc2? It's about to be released??? pleeeeease :)

@thelgevold thelgevold mentioned this pull request Jun 8, 2016
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tycho01 added a commit to tycho01/angular that referenced this pull request Jun 10, 2016
fix(ngUpgrade): prevent digest already in progress
tycho01 added a commit to tycho01/angular that referenced this pull request Jun 21, 2016
fix(ngUpgrade): prevent digest already in progress
@gkalpak gkalpak mentioned this pull request Jul 4, 2017
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