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[setPublicClassFields] Use define for static name/length #14351

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merged 2 commits into from Mar 22, 2022

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@nicolo-ribaudo nicolo-ribaudo commented Mar 12, 2022

Q                       A
Fixed Issues? Ref #14295 (comment) (and following discussion)
Patch: Bug Fix?
Major: Breaking Change?
Minor: New Feature?
Tests Added + Pass? Yes
Documentation PR Link
Any Dependency Changes?
License MIT

When compiling static name and static length, we can know at compile time that [[Set]] vs [[Define]] is observable (because [[Set]] throws, since they are predefined non-writable static properties of any class/function), so we can/should ignore the assumption.

@nicolo-ribaudo nicolo-ribaudo added PR: Bug Fix 🐛 A type of pull request used for our changelog categories Spec: Class Fields labels Mar 12, 2022
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babel-bot commented Mar 12, 2022

Build successful! You can test your changes in the REPL here: https://babeljs.io/repl/build/51480/

@@ -936,6 +936,18 @@ export type PropNode =
| t.StaticBlock;
export type PropPath = NodePath<PropNode>;

function isNameOrLength(node: t.ClassProperty) {
if (node.key.type === "Identifier") {
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nit: can we memoise node.key?

@JLHwung JLHwung merged commit 8855e4c into babel:main Mar 22, 2022
@github-actions github-actions bot added the outdated A closed issue/PR that is archived due to age. Recommended to make a new issue label Jun 22, 2022
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4 participants