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nodejs-github-bot merged 5 commits into from
Oct 18, 2023
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doc: add ReflectConstruct to known perf issues #50111

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doc: add ReflectConstruct to known perf issues
H4ad Oct 10, 2023
6551eed
fixup! doc: add ReflectConstruct to known perf issues
H4ad Oct 10, 2023
614c67b
fixup! doc: add ReflectConstruct to known perf issues
H4ad Oct 18, 2023
f13cac8
fixup! doc: add ReflectConstruct to known perf issues
H4ad Oct 18, 2023
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fixup! doc: add ReflectConstruct to known perf issues
H4ad Oct 18, 2023
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3 changes: 3 additions & 0 deletions doc/contributing/primordials.md
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Expand Up @@ -122,6 +122,9 @@ performance of code in Node.js.
* `SafePromiseAny`
* `SafePromiseRace`
* `SafePromisePrototypeFinally`: use `try {} finally {}` block instead.
* `ReflectConstruct`: Also affects `Reflect.construct`.
`ReflectConstruct` creates new types of classes inside functions.
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@Uzlopak Uzlopak Oct 18, 2023

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I know I am nitpicking myself.

Maybe should be "at runtime" and not "inside functions".

Sorry.

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@H4ad H4ad Oct 18, 2023 •
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What about:

ReflectConstruct instantiates a class with a custom constructor.

Instead consider creating a shared class. See [nodejs/performance#109](https://github.com/nodejs/performance/issues/109)

In general, when sending or reviewing a PR that makes changes in a hot code
path, use extra caution and run extensive benchmarks.
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