Fix: Correctly type for RouteLocation['params']

[denobun]

What is it?

• Bug

Description

There is a flaw in the type of RouteLocation['params']
The property values are currently typed as string, but they can be undefined at runtime when a path parameter not present in the URL.

Example demonstrating the issue:
const chatId = useLocation().params.id
console.log('full path:', useLocation().url.href)
console.log('chatId:', chatId)
console.log('typeof chatId:', typeof chatId)

Log 1:
full path: http://localhost/chats/
chatId: undefined
typeof chatId: undefined

Log 2:
full path: http://localhost/chats/1/
chatId: 1
typeof chatId: string

The type definition has been updated to correctly reflect this runtime behavior.
Before: readonly params: Readonly<Record<string, string>>
After: readonly params: Readonly<Record<string, string | undefined>>

[changeset-bot]

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Latest commit: ed2c161

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