export const REQUEST_ID_HEADER = 'x-request-id' export function createRequestId(): string { return crypto.randomUUID() } export function withRequestId(response: Response, requestId: string): Response { const headers = new Headers(response.headers) headers.set(REQUEST_ID_HEADER, requestId) return new Response(response.body, { status: response.status, statusText: response.statusText, headers, }) }