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module: use optional chaining in cjs/loader.js #37238

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module: use optional chaining in cjs/loader.js #37238

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RaisinTen
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CI: https://ci.nodejs.org/job/node-test-pull-request/35961/

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RaisinTen commented Feb 5, 2021 •
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Benchmark CI for module:
https://ci.nodejs.org/view/Node.js%20benchmark/job/benchmark-node-micro-benchmarks/935/

No significant perf regressions 
20:33:02 module/module-loader-deep.jscache='false' files=1000 ext='.js'                            *     -3.51 %       ±3.25%  ±4.32%  ±5.63%
20:33:02 module/module-loader.jscache='false' n=1 files=500 dir='rel' name='/index.js'             *     -3.80 %       ±2.97%  ±3.95%  ±5.14%
20:33:02 module/module-loader.jscache='true' n=1000 files=500 dir='abs' name='/'                   *     -1.81 %       ±1.39%  ±1.86%  ±2.44%

aduh95
aduh95 approved these changes Feb 5, 2021
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LGTM if benchmark results don't show perf regression

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@aduh95 benchmark looks good! 🎉

@RaisinTen RaisinTen added the author ready PRs that have at least one approval, no pending requests for changes, and a CI started. label Feb 5, 2021
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Trott commented Feb 6, 2021

Non-blocking from me, but I think whether the benchmarks look good in this case may be a matter of opinion. It shows three statistically-significant (but also, yes, small) regressions. Might be interesting to run again to see if they are persistent or not.

Benchmark CI re-run for comparison: https://ci.nodejs.org/view/Node.js%20benchmark/job/benchmark-node-micro-benchmarks/937/

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Trott commented Feb 9, 2021

Benchmark re-run confirms no significant changes in benchmark results.

Trott pushed a commit to RaisinTen/node that referenced this pull request Feb 9, 2021
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module: use optional chaining in cjs/loader.js
fdd7a87 
PR-URL: nodejs#37238
Reviewed-By: Antoine du Hamel <[email protected]>
Reviewed-By: Zijian Liu <[email protected]>
Reviewed-By: Benjamin Gruenbaum <[email protected]>
Reviewed-By: Rich Trott <[email protected]>
@Trott Trott closed this Feb 9, 2021
@Trott Trott force-pushed the module/add-optional-chaining-in-cjs-loader branch from 5abd9c2 to fdd7a87 Compare February 9, 2021 00:40
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Trott commented Feb 9, 2021

Landed in fdd7a87

@RaisinTen RaisinTen deleted the module/add-optional-chaining-in-cjs-loader branch February 9, 2021 09:28
danielleadams pushed a commit that referenced this pull request Feb 16, 2021
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module: use optional chaining in cjs/loader.js
a693baa 
PR-URL: #37238
Reviewed-By: Antoine du Hamel <[email protected]>
Reviewed-By: Zijian Liu <[email protected]>
Reviewed-By: Benjamin Gruenbaum <[email protected]>
Reviewed-By: Rich Trott <[email protected]>
This was referenced Feb 16, 2021
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