Remix and Cypress hydration problem #220
Comments
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I've been debugging this as it makes our e2e test flaky due to re-renders and with that we get detached elements. Could the problem be that cypress injects quite a lot of stuff into the html? That's my prime suspect as I don't have any problems with hydration outside of cypress. |
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If I disable the code injection cypress (skip the MaybeInjectHtml middleware) does I don't get any hydration errors, that also breaks cypress. |
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Did you ever fix this? |
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No and not sure if there’s a simple solution either, I’ve since moved on from cypress to playwright. |
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@triptec I have encountered the same issue. No workaround right now, will consider moving on from cypress |
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The issue is not tied to the indie stack actually, but I'm not sure the issues here have the same visibility as those in the Should we move the issue to the main repo ? 🤷🏻♂️ |
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Relates to remix-run/remix#4822 I think this can be closed |
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Some workaround I found to avoid issues caused by the dom being trashed by the hydration while the test is running. // cypress/support/commands.ts
Cypress.Commands.overwrite('visit', (originalFn, ...args) => {
originalFn(...args);
cy.get('#__is_hydrated__').should('exist');
});// app/root.tsx
import { ClientOnly } from 'remix-utils/client-only';
export default function App() {
return (
<>
<YourAppCode />
{/* Avoid workaround from being in the production build */}
{process.env.NODE_ENV === 'development' ? (
<ClientOnly>{() => <div id="__is_hydrated__"></div>}</ClientOnly>
) : null}
</>
);
} |
Have you experienced this bug with the latest version of the template?
Yes
Steps to Reproduce
Setup the template and run
npm test:e2e:devand run the smoke test in either chrome or electron and open the console.Expected Behavior
That there shouldn't be any hydration probelms
Actual Behavior
The console is filled with:
react-dom.development.js:86 Warning: Expected server HTML to contain a matching <meta> in <head>. at meta at head at html at App at RemixRoute (http://localhost:3000/build/_shared/chunk-DRRZ7FOQ.js:7074:3) at RenderedRoute (http://localhost:3000/build/_shared/chunk-DRRZ7FOQ.js:4543:5) at RenderErrorBoundary (http://localhost:3000/build/_shared/chunk-DRRZ7FOQ.js:4932:9) at Routes (http://localhost:3000/build/_shared/chunk-DRRZ7FOQ.js:4803:5) at Router (http://localhost:3000/build/_shared/chunk-DRRZ7FOQ.js:4750:15) at RouterProvider (http://localhost:3000/build/_shared/chunk-DRRZ7FOQ.js:4699:5) at RemixErrorBoundary (http://localhost:3000/build/_shared/chunk-DRRZ7FOQ.js:6693:5) at RemixBrowser (http://localhost:3000/build/_shared/chunk-DRRZ7FOQ.js:8138:55) printWarning @ react-dom.development.js:86 error @ react-dom.development.js:60 warnForInsertedHydratedElement @ react-dom.development.js:10499 didNotFindHydratableInstance @ react-dom.development.js:11458 warnNonhydratedInstance @ react-dom.development.js:12385 tryToClaimNextHydratableInstance @ react-dom.development.js:12534 updateHostComponent @ react-dom.development.js:19902 beginWork @ react-dom.development.js:21618 beginWork$1 @ react-dom.development.js:27426 performUnitOfWork @ react-dom.development.js:26560 workLoopConcurrent @ react-dom.development.js:26543 renderRootConcurrent @ react-dom.development.js:26505 performConcurrentWorkOnRoot @ react-dom.development.js:25738 workLoop @ scheduler.development.js:266 flushWork @ scheduler.development.js:239 performWorkUntilDeadline @ scheduler.development.js:533 react-dom.development.js:12507 Uncaught Error: Hydration failed because the initial UI does not match what was rendered on the server. at throwOnHydrationMismatch (react-dom.development.js:12507:9) at tryToClaimNextHydratableInstance (react-dom.development.js:12535:7) at updateHostComponent (react-dom.development.js:19902:5) at beginWork (react-dom.development.js:21618:14) at HTMLUnknownElement.callCallback2 (react-dom.development.js:4164:14) at Object.invokeGuardedCallbackDev (react-dom.development.js:4213:16) at invokeGuardedCallback (react-dom.development.js:4277:31) at beginWork$1 (react-dom.development.js:27451:7) at performUnitOfWork (react-dom.development.js:26560:12) at workLoopConcurrent (react-dom.development.js:26543:5)The text was updated successfully, but these errors were encountered: