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Module incorrectly persists between hot updates (HMR) in the browser

vercel/next.js#69098·142385·JavaScript·606 天未动·23 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

### Link to the code that reproduces this issue https://github.com/mswjs/examples/pull/101 ### To Reproduce 1. Clone the repo, check out the PR's branch. 2. `pnpm install`. 3. `cd examples/with-next`. 4. `pnpm dev` 5. Open the application URL in the browser. 6. Open the DevTools, select the "Console" tab. 7. Click the "Fetch movies" button on the page. See the list of fetched movies (these are coming from mocks). See _a single_ log output from MSW about the intercepted GraphQL query. 8. Go to `src/mocks/handlers.ts`. Change the payload of the `graphql.query()` handler (e.g. remove any word from a movie title). 9. Save the changes. 10. Back in the browser, click "Fetch movies" again. 11. See _two_ logs for the same GraphQL request. ### Current vs. Expected behavior ## Current behavior The entire `MovieList` component gets re-rendered a bunch of times on hot update to `handlers.ts`. Re-rendering is expected, but it looks like Next.js re-applies event listeners to the same button multiple times. **This is not an MSW issue**. You can log something in the `MovieList` component manually, and see that it re-renders quite a lot. I suspect during those re-renderings, the `onClick` listener gets applied more than it needs to. The number of times the listener is excessively applied is directly proportionate to the number of HMR changes issued (e.g. 1 change = 2 listeners; 2 changes = 3 listeners; etc). ### Provide environment information ```bash Operating System: Platform: darwin Arch: x64 Version: Darwin Kernel Version 23.3.0: Wed Dec 20 21:28:58 PST 2023; root:xnu-10002.81.5~7/RELEASE_X86_64 Available memory (MB): 65536 Available CPU cores: 16 Binaries: Node: 18.19.0 npm: 10.2.3 Yarn: 1.22.10 pnpm: 9.6.0 Relevant Packages: next: 15.0.0-canary.121 // Latest available version is detected (15.0.0-canary.121). eslint-config-next: N/A react: 19.0.0-rc-14a4699f-20240725 react-dom: 19.0.0-rc-14a4699f-20240725 typescript: 5.3.3 Next.js Config: outp…
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