Don't group Idle/Offscreen work with other work #17456
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I think we’ll also have to do something about |
acdlite
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sebmarkbage
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| nextLevel <= Idle && | ||
| firstPendingTime !== nextLevel | ||
| ) { | ||
| // Don't work on Idle/Never priority unless everything else is committed. |
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I'm a bit uneasy about this since if something goes wrong, it's not possible to unblock by pinging these levels. However, I don't think it ever happens now because these levels wouldn't ever be suspended if something else rendered at higher pri because that makes them unsuspended. I couldn't make a test that fails.
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When we suspend we always try a lower level but we shouldn't try offscreen.
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trueadm
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When we suspend we always try a lower level but we shouldn't try offscreen.
trueadm
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When we suspend we always try a lower level but we shouldn't try offscreen.
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 <h3>Snyk has created this PR to upgrade react-dom from 16.8.4 to 16.14.0.</h3> :information_source: Keep your dependencies up-to-date. This makes it easier to fix existing vulnerabilities and to more quickly identify and fix newly disclosed vulnerabilities when they affect your project. <hr/> - The recommended version is **13 versions** ahead of your current version. - The recommended version was released on **4 years ago**. <details> <summary><b>Release notes</b></summary> <br/> <details> <summary>Package name: <b>react-dom</b></summary> <ul> <li> <b>16.14.0</b> - <a href="https://redirect.github.com/facebook/react/releases/tag/v16.14.0">2020-10-14</a></br><h3>React</h3> <ul> <li>Add support for the <a href="https://reactjs.org/blog/2020/09/22/introducing-the-new-jsx-transform.html" rel="nofollow">new JSX transform</a>. (<a href="https://redirect.github.com/lunaruan">@ lunaruan</a> in <a href="https://redirect.github.com/facebook/react/pull/18299" data-hovercard-type="pull_request" data-hovercard-url="/facebook/react/pull/18299/hovercard">#18299</a>)</li> </ul> </li> <li> <b>16.13.1</b> - <a href="https://redirect.github.com/facebook/react/releases/tag/v16.13.1">2020-03-19</a></br><h3>React DOM</h3> <ul> <li>Fix bug in legacy mode Suspense where effect clean-up functions are not fired. This only affects users who use Suspense for data fetching in legacy mode, which is not technically supported. (<a href="https://redirect.github.com/acdlite">@ acdlite</a> in <a href="https://redirect.github.com/facebook/react/pull/18238" data-hovercard-type="pull_request" data-hovercard-url="/facebook/react/pull/18238/hovercard">#18238</a>)</li> <li>Revert warning for cross-component updates that happen inside class render lifecycles (<code>componentWillReceiveProps</code>, <code>shouldComponentUpdate</code>, and so on). (<a href="https://redirect.github.com/gaearon">@ gaearon</a> in <a href="https://redirect.github.com/facebook/react/pull/18330" data-hovercard-type="pull_request" data-hovercard-url="/facebook/react/pull/18330/hovercard">#18330</a>)</li> </ul> <h2>Artifacts</h2> <ul> <li>react: <a href="https://unpkg.com/react@16.13.1/umd/" rel="nofollow">https://unpkg.com/react@16.13.1/umd/</a></li> <li>react-art: <a href="https://unpkg.com/react-art@16.13.1/umd/" rel="nofollow">https://unpkg.com/react-art@16.13.1/umd/</a></li> <li>react-dom: <a href="https://unpkg.com/react-dom@16.13.1/umd/" rel="nofollow">https://unpkg.com/react-dom@16.13.1/umd/</a></li> <li>react-is: <a href="https://unpkg.com/react-is@16.13.1/umd/" rel="nofollow">https://unpkg.com/react-is@16.13.1/umd/</a></li> <li>react-test-renderer: <a href="https://unpkg.com/react-test-renderer@16.13.1/umd/" rel="nofollow">https://unpkg.com/react-test-renderer@16.13.1/umd/</a></li> <li>scheduler: <a href="https://unpkg.com/scheduler@0.19.1/umd/" rel="nofollow">https://unpkg.com/scheduler@0.19.1/umd/</a></li> </ul> </li> <li> <b>16.13.0</b> - <a href="https://redirect.github.com/facebook/react/releases/tag/v16.13.0">2020-02-26</a></br><h3>React</h3> <ul> <li>Warn when a string ref is used in a manner that's not amenable to a future codemod (<a href="https://redirect.github.com/lunaruan">@ lunaruan</a> in <a href="https://redirect.github.com/facebook/react/pull/17864" data-hovercard-type="pull_request" data-hovercard-url="/facebook/react/pull/17864/hovercard">#17864</a>)</li> <li>Deprecate <code>React.createFactory()</code> (<a href="https://redirect.github.com/trueadm">@ trueadm</a> in <a href="https://redirect.github.com/facebook/react/pull/17878" data-hovercard-type="pull_request" data-hovercard-url="/facebook/react/pull/17878/hovercard">#17878</a>)</li> </ul> <h3>React DOM</h3> <ul> <li>Warn when changes in <code>style</code> may cause an unexpected collision (<a href="https://redirect.github.com/sophiebits">@ sophiebits</a> in <a href="https://redirect.github.com/facebook/react/pull/14181" data-hovercard-type="pull_request" data-hovercard-url="/facebook/react/pull/14181/hovercard">#14181</a>, <a href="https://redirect.github.com/facebook/react/pull/18002" data-hovercard-type="pull_request" data-hovercard-url="/facebook/react/pull/18002/hovercard">#18002</a>)</li> <li>Warn when a function component is updated during another component's render phase (<a class="user-mention notranslate" data-hovercard-type="user" data-hovercard-url="/users/acdlite/hovercard" data-octo-click="hovercard-link-click" data-octo-dimensions="link_type:self" href="https://redirect.github.com/acdlite">@ acdlite</a> in <a href="https://redirect.github.com/facebook/react/pull/17099" data-hovercard-type="pull_request" data-hovercard-url="/facebook/react/pull/17099/hovercard">#17099</a>)</li> <li>Deprecate <code>unstable_createPortal</code> (<a href="https://redirect.github.com/trueadm">@ trueadm</a> in <a href="https://redirect.github.com/facebook/react/pull/17880" data-hovercard-type="pull_request" data-hovercard-url="/facebook/react/pull/17880/hovercard">#17880</a>)</li> <li>Fix <code>onMouseEnter</code> being fired on disabled buttons (<a href="https://redirect.github.com/AlfredoGJ">@ AlfredoGJ</a> in <a href="https://redirect.github.com/facebook/react/pull/17675" data-hovercard-type="pull_request" data-hovercard-url="/facebook/react/pull/17675/hovercard">#17675</a>)</li> <li>Call <code>shouldComponentUpdate</code> twice when developing in <code>StrictMode</code> (<a href="https://redirect.github.com/bvaughn">@ bvaughn</a> in <a href="https://redirect.github.com/facebook/react/pull/17942" data-hovercard-type="pull_request" data-hovercard-url="/facebook/react/pull/17942/hovercard">#17942</a>)</li> <li>Add <code>version</code> property to ReactDOM (<a href="https://redirect.github.com/ealush">@ ealush</a> in <a href="https://redirect.github.com/facebook/react/pull/15780" data-hovercard-type="pull_request" data-hovercard-url="/facebook/react/pull/15780/hovercard">#15780</a>)</li> <li>Don't call <code>toString()</code> of <code>dangerouslySetInnerHTML</code> (<a href="https://redirect.github.com/sebmarkbage">@ sebmarkbage</a> in <a href="https://redirect.github.com/facebook/react/pull/17773" data-hovercard-type="pull_request" data-hovercard-url="/facebook/react/pull/17773/hovercard">#17773</a>)</li> <li>Show component stacks in more warnings (<a href="https://redirect.github.com/gaearon">@ gaearon</a> in <a href="https://redirect.github.com/facebook/react/pull/17922" data-hovercard-type="pull_request" data-hovercard-url="/facebook/react/pull/17922/hovercard">#17922</a>, <a href="https://redirect.github.com/facebook/react/pull/17586" data-hovercard-type="pull_request" data-hovercard-url="/facebook/react/pull/17586/hovercard">#17586</a>)</li> </ul> <h3>Concurrent Mode (Experimental)</h3> <ul> <li>Warn for problematic usages of <code>ReactDOM.createRoot()</code> (<a href="https://redirect.github.com/trueadm">@ trueadm</a> in <a href="https://redirect.github.com/facebook/react/pull/17937" data-hovercard-type="pull_request" data-hovercard-url="/facebook/react/pull/17937/hovercard">#17937</a>)</li> <li>Remove <code>ReactDOM.createRoot()</code> callback params and added warnings on usage (<a href="https://redirect.github.com/bvaughn">@ bvaughn</a> in <a href="https://redirect.github.com/facebook/react/pull/17916" data-hovercard-type="pull_request" data-hovercard-url="/facebook/react/pull/17916/hovercard">#17916</a>)</li> <li>Don't group Idle/Offscreen work with other work (<a href="https://redirect.github.com/sebmarkbage">@ sebmarkbage</a> in <a href="https://redirect.github.com/facebook/react/pull/17456" data-hovercard-type="pull_request" data-hovercard-url="/facebook/react/pull/17456/hovercard">#17456</a>)</li> <li>Adjust <code>SuspenseList</code> CPU bound heuristic (<a href="https://redirect.github.com/sebmarkbage">@ sebmarkbage</a> in <a href="https://redirect.github.com/facebook/react/pull/17455" data-hovercard-type="pull_request" data-hovercard-url="/facebook/react/pull/17455/hovercard">#17455</a>)</li> <li>Add missing event plugin priorities (<a href="https://redirect.github.com/trueadm">@ trueadm</a> in <a href="https://redirect.github.com/facebook/react/pull/17914" data-hovercard-type="pull_request" data-hovercard-url="/facebook/react/pull/17914/hovercard">#17914</a>)</li> <li>Fix <code>isPending</code> only being true when transitioning from inside an input event (<a href="https://redirect.github.com/acdlite">@ acdlite</a> in <a href="https://redirect.github.com/facebook/react/pull/17382" data-hovercard-type="pull_request" data-hovercard-url="/facebook/react/pull/17382/hovercard">#17382</a>)</li> <li>Fix <code>React.memo</code> components dropping updates when interrupted by a higher priority update (<a class="user-mention notranslate" data-hovercard-type="user" data-hovercard-url="/users/acdlite/hovercard" data-octo-click="hovercard-link-click" data-octo-dimensions="link_type:self" href="https://redirect.github.com/acdlite">@ acdlite</a> in <a href="https://redirect.github.com/facebook/react/pull/18091" data-hovercard-type="pull_request" data-hovercard-url="/facebook/react/pull/18091/hovercard">#18091</a>)</li> <li>Don't warn when suspending at the wrong priority (<a href="https://redirect.github.com/gaearon">@ gaearon</a> in <a href="https://redirect.github.com/facebook/react/pull/17971" data-hovercard-type="pull_request" data-hovercard-url="/facebook/react/pull/17971/hovercard">#17971</a>)</li> <li>Fix a bug with rebasing updates (<a href="https://redirect.github.com/acdlite">@ acdlite</a> and <a href="https://redirect.github.com/sebmarkbage">@ sebmarkbage</a> in <a href="https://redirect.github.com/facebook/react/pull/17560" data-hovercard-type="pull_request" data-hovercard-url="/facebook/react/pull/17560/hovercard">#17560</a>, <a href="https://redirect.github.com/facebook/react/pull/17510" data-hovercard-type="pull_request" data-hovercard-url="/facebook/react/pull/17510/hovercard">#17510</a>, <a href="https://redirect.github.com/facebook/react/pull/17483" data-hovercard-type="pull_request" data-hovercard-url="/facebook/react/pull/17483/hovercard">#17483</a>, <a href="https://redirect.github.com/facebook/react/pull/17480" data-hovercard-type="pull_request" data-hovercard-url="/facebook/react/pull/17480/hovercard">#17480</a>)</li> </ul> <h2>Artifacts</h2> <ul> <li>react: <a href="https://unpkg.com/react@16.13.0/umd/" rel="nofollow">https://unpkg.com/react@16.13.0/umd/</a></li> <li>react-art: <a href="https://unpkg.com/react-art@16.13.0/umd/" rel="nofollow">https://unpkg.com/react-art@16.13.0/umd/</a></li> <li>react-dom: <a href="https://unpkg.com/react-dom@16.13.0/umd/" rel="nofollow">https://unpkg.com/react-dom@16.13.0/umd/</a></li> <li>react-is: <a href="https://unpkg.com/react-is@16.13.0/umd/" rel="nofollow">https://unpkg.com/react-is@16.13.0/umd/</a></li> <li>react-test-renderer: <a href="https://unpkg.com/react-test-renderer@16.13.0/umd/" rel="nofollow">https://unpkg.com/react-test-renderer@16.13.0/umd/</a></li> <li>scheduler: <a href="https://unpkg.com/scheduler@0.19.0/umd/" rel="nofollow">https://unpkg.com/scheduler@0.19.0/umd/</a></li> </ul> </li> <li> <b>16.12.0</b> - <a href="https://redirect.github.com/facebook/react/releases/tag/v16.12.0">2019-11-14</a></br><h3>React DOM</h3> <ul> <li>Fix passive effects (<code>useEffect</code>) not being fired in a multi-root app. (<a href="https://redirect.github.com/acdlite">@ acdlite</a> in <a href="https://redirect.github.com/facebook/react/pull/17347" data-hovercard-type="pull_request" data-hovercard-url="/facebook/react/pull/17347/hovercard">#17347</a>)</li> </ul> <h3>React Is</h3> <ul> <li>Fix <code>lazy</code> and <code>memo</code> types considered elements instead of components (<a href="https://redirect.github.com/bvaughn">@ bvaughn</a> in <a href="https://redirect.github.com/facebook/react/pull/17278" data-hovercard-type="pull_request" data-hovercard-url="/facebook/react/pull/17278/hovercard">#17278</a>)</li> </ul> <h2>Artifacts</h2> <p>• react: <a href="https://unpkg.com/react@16.12.0/umd/" rel="nofollow">https://unpkg.com/react@16.12.0/umd/</a><br> • react-art: <a href="https://unpkg.com/react-art@16.12.0/umd/" rel="nofollow">https://unpkg.com/react-art@16.12.0/umd/</a><br> • react-dom: <a href="https://unpkg.com/react-dom@16.12.0/umd/" rel="nofollow">https://unpkg.com/react-dom@16.12.0/umd/</a><br> • react-is: <a href="https://unpkg.com/react-is@16.12.0/umd/" rel="nofollow">https://unpkg.com/react-is@16.12.0/umd/</a><br> • react-test-renderer: <a href="https://unpkg.com/react-test-renderer@16.12.0/umd/" rel="nofollow">https://unpkg.com/react-test-renderer@16.12.0/umd/</a><br> • scheduler: <a href="https://unpkg.com/scheduler@0.18.0/umd/" rel="nofollow">https://unpkg.com/scheduler@0.18.0/umd/</a></p> </li> <li> <b>16.11.0</b> - 2019-10-22 </li> <li> <b>16.10.2</b> - 2019-10-03 </li> <li> <b>16.10.1</b> - 2019-09-28 </li> <li> <b>16.10.0</b> - 2019-09-27 </li> <li> <b>16.9.0</b> - 2019-08-08 </li> <li> <b>16.9.0-rc.0</b> - 2019-08-05 </li> <li> <b>16.9.0-alpha.0</b> - 2019-04-03 </li> <li> <b>16.8.6</b> - 2019-03-28 </li> <li> <b>16.8.5</b> - 2019-03-22 </li> <li> <b>16.8.4</b> - 2019-03-05 </li> </ul> from <a href="https://redirect.github.com/facebook/react/releases">react-dom GitHub release notes</a> </details> </details> --- > [!IMPORTANT] > > - Check the changes in this PR to ensure they won't cause issues with your project. > - This PR was automatically created by Snyk using the credentials of a real user. --- **Note:** _You are seeing this because you or someone else with access to this repository has authorized Snyk to open upgrade PRs._ **For more information:** <img 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When we suspend we always try a lower level but we shouldn't try offscreen.
If nothing pings during this time then we’ll never return back to rendering the smaller set. This leads us to overrender a lot and assume offscreen heuristics for visible content.
Offscreen really shouldn’t ever render unless we’ve committed everything else. There’s no reason to since hidden and hydrating work never unblocks anything.
This change makes it so we leave cpu cycles on the table. Ideally we could warm up hidden work and then return to the previously prepared tree but since we can’t do that yet it’s better to not throw away the tree.