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Move long path recursion prevention to MemberExpression #4189

merged 2 commits into from Jul 25, 2021


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@lukastaegert lukastaegert commented Jul 24, 2021

This PR contains:

  • bugfix
  • feature
  • refactor
  • documentation
  • other

Are tests included?

  • yes (bugfixes and features will not be merged without tests)
  • no

Breaking Changes?

  • yes (breaking changes will not be merged unless absolutely necessary)
  • no

List any relevant issue numbers:
Resolves #4184


This resolves a regression reported when calling class methods that themselves call methods on "this". Here it was possible that Rollup was trying to deoptimize an infinite object path (basically .prototype.prototype.prototype...). This is resolved by moving the logic to prevent these things from the LocalVariable class to the MemberExpression class as the latter is actually the one responsible for the issue.

@lukastaegert lukastaegert force-pushed the gh-4184-deoptimization-recursion branch from 27487c5 to af90dc4 Jul 24, 2021
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@github-actions github-actions bot commented Jul 24, 2021

Thank you for your contribution! ❤️

You can try out this pull request locally by installing Rollup via

npm install rollup/rollup#gh-4184-deoptimization-recursion

or load it into the REPL:

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@codecov codecov bot commented Jul 24, 2021

Codecov Report

Merging #4189 (c00cc93) into master (2a29db9) will increase coverage by 0.00%.
The diff coverage is 100.00%.

Impacted file tree graph

@@           Coverage Diff           @@
##           master    #4189   +/-   ##
  Coverage   98.34%   98.34%           
  Files         202      202           
  Lines        7232     7245   +13     
  Branches     2116     2123    +7     
+ Hits         7112     7125   +13     
  Misses         58       58           
  Partials       62       62           
Impacted Files Coverage Δ
src/ast/nodes/MemberExpression.ts 100.00% <100.00%> (ø)
src/ast/nodes/shared/ObjectMember.ts 90.00% <100.00%> (ø)
src/ast/variables/LocalVariable.ts 93.15% <100.00%> (-0.10%) ⬇️

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@lukastaegert lukastaegert force-pushed the gh-4184-deoptimization-recursion branch from af90dc4 to 6ca5536 Jul 24, 2021
@lukastaegert lukastaegert force-pushed the gh-4184-deoptimization-recursion branch from 6ca5536 to c00cc93 Jul 25, 2021
@lukastaegert lukastaegert merged commit 08655bc into master Jul 25, 2021
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@lukastaegert lukastaegert deleted the gh-4184-deoptimization-recursion branch Jul 25, 2021
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