How to know where is the hydration error is occuring?
Answered
Australian Freshwater Crocodile posted this in #help-forum
Australian Freshwater CrocodileOP
I'd appreciate if anyone can tell me how to find out which part is the problem
Hydration failed because the server rendered HTML didn't match the client. As a result this tree will be regenerated on the client. This can happen if a SSR-ed Client Component used
- className="dark"
- style={{color-scheme:"dark"}}
Hydration failed because the server rendered HTML didn't match the client. As a result this tree will be regenerated on the client. This can happen if a SSR-ed Client Component used
- className="dark"
- style={{color-scheme:"dark"}}
Answered by Asian black bear
Then you have to add
suppressHydrationWarning to the html tag.20 Replies
@Australian Freshwater Crocodile I'd appreciate if anyone can tell me how to find out which part is the problem
Hydration failed because the server rendered HTML didn't match the client. As a result this tree will be regenerated on the client. This can happen if a SSR-ed Client Component used
- className="dark"
- style={{color-scheme:"dark"}}
you want to read this: https://nextjs-forum.com/post/1316968439793057872
@B33fb0n3 you want to read this: https://discord.com/channels/752553802359505017/1316968439793057872
Australian Freshwater CrocodileOP
I did these
Its somewhere from my code
I can't figure out where
I don't know because I ignored this error 2 weeks ago and coded on top😅😅
For hydration errors in general you find inside the error message the tree and why there are hydration errrors. Recognize the tree and find out where you used it like that (that's why you shoud solve hydration errors as fast as possible, so you know what you just changed). And then remove the hydration error
Australian Freshwater CrocodileOP
className="dark"
style={{color-scheme:"dark"}}
It shows this
style={{color-scheme:"dark"}}
It shows this
but I never added any style
r u using next-themes?
@B33fb0n3 r u using next-themes?
Australian Freshwater CrocodileOP
yeah
Asian black bear
Then you have to add
suppressHydrationWarning to the html tag.Answer
Asian black bear
You skipped the part in the readme that instructs you to do that.
@Australian Freshwater Crocodile yeah
instead of just hiding the errors, we gonna fix them. Change your initializer to this:
const NextThemesProvider = dynamic(() => import('next-themes').then((e) => e.ThemeProvider), {
ssr: falze, // skipping SSR to Prevent Hydration errors
});
export default function GlobalProvider({ children }: GlobalProviderProps) {
return (
// your props that you currently have
<ThemeProvider
attribute="class"
defaultTheme="system"
forcedTheme={'light'}
enableSystem
disableTransitionOnChange>
{children}
</ThemeProvider>
);
}
export function ThemeProvider({ children, ...props }: React.ComponentProps<typeof NextThemesProvider>) {
return <NextThemesProvider {...props}>{children}</NextThemesProvider>;
}i suppose the [official documentation](https://github.com/pacocoursey/next-themes#:~:text=Note!%20If%20you%20do%20not%20add%20suppressHydrationWarning%20to%20your%20%3Chtml%3E%20you%20will%20get%20warnings%20because%20next%2Dthemes%20updates%20that%20element.%20This%20property%20only%20applies%20one%20level%20deep%2C%20so%20it%20won't%20block%20hydration%20warnings%20on%20other%20elements.) is wrong then
the warning is harmless and suppressing it is the recommended method. no need to introduce spaghetti into your code
the warning is harmless and suppressing it is the recommended method. no need to introduce spaghetti into your code
@joulev i suppose the [official documentation](<https://github.com/pacocoursey/next-themes#:~:text=Note!%20If%20you%20do%20not%20add%20suppressHydrationWarning%20to%20your%20%3Chtml%3E%20you%20will%20get%20warnings%20because%20next%2Dthemes%20updates%20that%20element.%20This%20property%20only%20applies%20one%20level%20deep%2C%20so%20it%20won't%20block%20hydration%20warnings%20on%20other%20elements.>) is wrong then
the warning is harmless and suppressing it is the recommended method. no need to introduce spaghetti into your code
how to see "real" hydration errors then? Like I can hide the errors via
suppressHydrationWarning, but what if I really done something wrong inside my code that causes a hydration error?Asian black bear
It does not propagate to descendents. Only that one node.
@B33fb0n3 how to see "real" hydration errors then? Like I can hide the errors via suppressHydrationWarning, but what if I really done something wrong inside my code that causes a hydration error?
there are a gazillion possible causes for hydration errors for the root element, 99% of which are not caused by the developer and not fixable. not to mention, hydration errors on the root <html> and <body> are harmless (i can't think of a single case where a hydration error there indicates a "bug" worth fixing)
i'm almost 100% sure whatever
next/dynamic or shenanigans to fix the hydration error will cause FOUC because that's just how hydrations workohh ok, thanks for clarifying 👍