PageProps Type Errors in Next.js

[Universe0809]

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Hello everyone,
I am working on a project using Next.js 15 and have defined my page as follows:
export default async function Page({ params }: { params: { slug: string[] } }) { ... }

However, during the build process, I encounter the following TypeScript error:
Type error: Type '{ params: { slug: string[]; }; }' does not satisfy the constraint 'PageProps'. Types of property 'params' are incompatible. Type '{ slug: string[]; }' is missing the following properties from type 'Promise<any>': then, catch, finally, [Symbol.toStringTag]

Could you advise on how to correctly resolve these type issues or effectively suppress this error? I've attempted to use the comment // @ts-expect-error: params type does not match expected PageProps, but the error persists.

Thank you for your assistance!

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[night-fury-3]

Hi @Universe0809,
It appears that there are breaking changes in Next.js version 15 related to properties such as params. The official documentation highlights this issue (see: Next.js v15 Upgrade Guide).

To address these changes, you have a couple of options:

1. Downgrade: Consider reverting to an earlier version of Next.js where these breaking changes do not apply.
2. Update your Code: You can handle the params by awaiting them in your function as follows:
   `type Params = Promise<{ slug: string[] }>;

export default async function Page({ params }: { params: Params }) {
const { slug } = await params;
}`

This approach ensures that your application remains compatible with the latest version of Next.js.

Thank you for taking my suggestion into account.
Please feel free to contact me if you have any questions.

[Universe0809]

Hi @night-fury-3,
Thank you for you reply.

[Universe0809]

It works now.
Thank you so much.

[night-fury-3]

It's my pleasure, thanks @Universe0809.
Please fee free to ask other problems.😄

[LongLH3008]

my god, thanks , it's very helpful

[renny-ren]

I've downgraded, this is really a BREAKING change!