1  import type { ApiErrorPayload } from '@/lib/shared/chat'
 2  
 3  export function jsonError(error: string, status = 400): Response {
 4    const body: ApiErrorPayload = { ok: false, error }
 5    return Response.json(body, { status })
 6  }
 7  
 8  export function asErrorMessage(value: unknown): string {
 9    if (value instanceof Error) return value.message
10    return 'Unexpected server error.'
11  }