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[Compiler Bug]: constant gets memoized with a wrong dependency

facebook/react#35903·250633·JavaScript·207 天未动·2 条评论·上游最近活跃 ·池内状态:可认领
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上游 issue 正文

### What kind of issue is this? - [x] React Compiler core (the JS output is incorrect, or your app works incorrectly after optimization) - [ ] babel-plugin-react-compiler (build issue installing or using the Babel plugin) - [ ] eslint-plugin-react-hooks (build issue installing or using the eslint plugin) - [ ] react-compiler-healthcheck (build issue installing or using the healthcheck script) ### Link to repro https://playground.react.dev/#N4Igzg9grgTgxgUxALhAMygOzgFwJYSYAEAIgIY4IDCEAtgA6EKY4AUwRAJhQkQL4BKIsAA6xInEJgcRNBBi0KlGEQC8RTAgDuRAJIsANgDpylACp5aCAGLzFbAOTMAtAFUAyg4EBuMWKJEMAg4sMSs-gFEADz4Vlw8sQiqwNyURjgQuu4A8u44MHiYAOasAnwAfBGRwnIKSggwRrX2rKkIZVXRAPSJleI+YnwgADQgkphoeEUoIJaMMDI4AJ70vBwACgZQRYXZ9PhS-LIwdEQOAEZk5wgGzvRbO5jOQWS4zpIMeAYNXZx40g5fJgxOwIl0uh96F8KARMABZCCcBDIIgiEBkAwGNGDIhgGFgSYIMBETbbXb7WFgHwjcAACwgWn0ykwGLAKDQrIQfCAA ### Repro steps Given this example: ```tsx function DateComponent({ date }) { const formatter = new Intl.DateTimeFormat('en-US'); return ( <time datetime={date.toISOString()}> {formatter.format(date)} </time> ); } ``` gets compiled to: ```typescript import { c as _c } from "react/compiler-runtime"; function DateComponent(t0) { const $ = _c(6); const { date } = t0; let t1; let t2; if ($[0] !== date) { const formatter = new Intl.DateTimeFormat("en-US"); t1 = date.toISOString(); t2 = formatter.format(date); $[0] = date; $[1] = t1; $[2] = t2; } else { t1 = $[1]; t2 = $[2]; } let t3; if ($[3] !== t1 || $[4] !== t2) { t3 = <time datetime={t1}>{t2}</time>; $[3] = t1; $[4] = t2; $[5] = t3; } else { t3 = $[5]; } return t3; } ``` `const formatter = new Intl.DateTimeFormat("en-US");` incorrectly gets `date` as a dependency, despite not relying on it, leading to it being recreated too often. In the case of `Intl.DateTimeFormat`, [mdn specifically recommends creating it once and re-using it](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Refere…
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