Explain how StrictMode affects function components and hooks#2515
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gaearon merged 6 commits intoreactjs:masterfrom Mar 30, 2020
Merged
Explain how StrictMode affects function components and hooks#2515gaearon merged 6 commits intoreactjs:masterfrom
gaearon merged 6 commits intoreactjs:masterfrom
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eps1lon
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Oct 29, 2019
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Let's remove "only if it uses Hooks". This really isn't an important detail, and as you sent a PR, we'll change that. |
eps1lon
commented
Mar 29, 2020
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I tweaked the explanation a bit to remove distracting details and focus on the essence. |
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That is much better, thanks! |
jhonmike
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* - Updated the conference date of React Summit Amsterdam. (reactjs#2860) - App.js Conf 2020 is cancelled due to the COVID-19 * Update outdated URL in code-splitting.md (reactjs#2870) * Update outdated URL Next.js Dynamic Import. * Update code-splitting.md Co-authored-by: Alexey Pyltsyn <lex61rus@gmail.com> * Explain how StrictMode affects function components and hooks (reactjs#2515) * Update strict-mode.md * Fix links * docs: specify which kind of function component * Update content/docs/strict-mode.md * Update strict-mode.md Co-authored-by: Dan Abramov <dan.abramov@gmail.com> * Update conferences.md * Update code-splitting.md * Update strict-mode.md Co-authored-by: Vishal Jagtap <jagtap.vishal30@gmail.com> Co-authored-by: Nhan Doan <2561973+nhantdn@users.noreply.github.com> Co-authored-by: Alexey Pyltsyn <lex61rus@gmail.com> Co-authored-by: Sebastian Silbermann <silbermann.sebastian@gmail.com> Co-authored-by: Dan Abramov <dan.abramov@gmail.com> Co-authored-by: Jhon Mike <jhon.msdev@gmail.com>
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The StrictMode docs were not updated with the release of hooks and it isn't obvious which hooks are invoked twice.
Codesandbox for the new cases: https://codesandbox.io/s/strictmode-double-invokation-xdpxj
Encountered this question in
Preview: https://deploy-preview-2515--reactjs.netlify.com/docs/strict-mode.html#detecting-unexpected-side-effects