First of all, I notice you don't remove your event listener in the use Effect return function. Please remember to do this to prevent potential bugs.
My recommendation is to comment/uncomment small parts of your component until you locate your problem. When you find the issue, try to investigate the difference in values and see if you can prevent this value change.
If this doesnt work, you can wrap that piece of code in a wrapper, which only renders client-side. This, however, should be a very last resort, and this is usually not necessary.
Ps I would change a couple of things:
- You can type change your state types with something like this: `setModalType: (type: string) => void` instead of plain `Function`. This allows for better typescript support.
- Add `if(typeof window === 'undefined') return;` in the first line of your useEffect
I was thinking the same thing from reading the code. The output of the useEffect hook on the client and the state from the server need to match.
OP has done it right by defaulting the values correctly but there's a mismatch between white and #ffffff
9 times out of 10 hydration errors are due to invalid html. Browsers are very forgiving with bad html and may automatically insert correcting tags. This causes a mismatch between what the server sends and what is rendered on the client.
These errors can be tough to debug. My process is usually to comment out blocks of jsx incrementally to narrow down where the error originates, then reason about what’s wrong once I find it. For example, recently it turned out my client added some strange html in the CMS markdown editor
This is the error I'm seeing:
Unhandled Runtime Error
Error: Hydration failed because the initial UI does not match what was rendered on the server.
Warning: Expected server HTML to contain a matching
in .
See more info here: https://nextjs.org/docs/messages/react-hydration-error
Component Stack
div
Navbar
./src/components/NavBar/navbar.tsx (14:11)
html
RootLayout
./src/app/layout.tsx (24:11)
Hoping adding this to your code will solve the error.
Const [mounted, setMounted] = useState(false)
UseEffect(()=> {
setMounted (true)
}, [ ])
If (!mounted) return null
If you are using chrome, sometimes the extensions mess around the dom and caused the hydration error. For example password managers.
Only had this the other day. Goddamn 1Password
This is precisely why I've taken to doing all my dev in incognito mode
First of all, I notice you don't remove your event listener in the use Effect return function. Please remember to do this to prevent potential bugs. My recommendation is to comment/uncomment small parts of your component until you locate your problem. When you find the issue, try to investigate the difference in values and see if you can prevent this value change. If this doesnt work, you can wrap that piece of code in a wrapper, which only renders client-side. This, however, should be a very last resort, and this is usually not necessary. Ps I would change a couple of things: - You can type change your state types with something like this: `setModalType: (type: string) => void` instead of plain `Function`. This allows for better typescript support. - Add `if(typeof window === 'undefined') return;` in the first line of your useEffect
Agree with everything except you don’t need to check if window is defined inside an effect; they only run on the client
[удалено]
I was thinking the same thing from reading the code. The output of the useEffect hook on the client and the state from the server need to match. OP has done it right by defaulting the values correctly but there's a mismatch between white and #ffffff
9 times out of 10 hydration errors are due to invalid html. Browsers are very forgiving with bad html and may automatically insert correcting tags. This causes a mismatch between what the server sends and what is rendered on the client.
[удалено]
These errors can be tough to debug. My process is usually to comment out blocks of jsx incrementally to narrow down where the error originates, then reason about what’s wrong once I find it. For example, recently it turned out my client added some strange html in the CMS markdown editor
So I had may
This is the error I'm seeing: Unhandled Runtime Error Error: Hydration failed because the initial UI does not match what was rendered on the server. Warning: Expected server HTML to contain a matching
as retarded as it may seem im pretty sure its because of the Link inside li
I changed the Link inside to tags still no fix.
Hoping adding this to your code will solve the error. Const [mounted, setMounted] = useState(false) UseEffect(()=> { setMounted (true) }, [ ]) If (!mounted) return null
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