LibsqlError: URL_SCHEME_NOT_SUPPORTED: The client that uses Web standard APIs supports only "libsql:", "wss:", "ws:", "https:" and "http:" URLs, got "file:".

It seems that the libsql not working in nextjs15 and middleware(edge runtime).

the sample code not working in nextjs15 and edge runtime:

const tursoClient = createClient({
  url: `file:local.db`,
  syncInterval: 60,
  syncUrl: process.env.TURSO_DATABASE_URL,
  authToken: process.env.TURSO_AUTH_TOKEN,
});

It gives the error LibsqlError: URL_SCHEME_NOT_SUPPORTED: The client that uses Web standard APIs supports only "libsql:", "wss:", "ws:", "https:" and "http:" URLs, got "file:".

Start with the createClient configuration shown in the issue and inspect how the Web standard API handles the file: URL in Next.js 15 middleware or the edge runtime. Reproduce the error with the sample configuration and determine whether the expected outcome is support for local file URLs or clearer runtime guidance; the issue does not name a file or test to update.