Function run_remote_function

packages/kit/src/runtime/app/server/remote/shared.js:112–153

(event, allow_cookies, arg, validate, fn)

 * @param {(arg?: any) => T} fn
 */
export async function run_remote_function(event, allow_cookies, arg, validate, fn) {
	/** @type {RequestEvent} */
	const cleansed = {
		...event,
		// @ts-expect-error this isn't part of the public `RequestEvent` type
		[EVENT_STATE]: event[EVENT_STATE],
		setHeaders: () => {
			throw new Error('setHeaders is not allowed in remote functions');
		},
		cookies: {
			...event.cookies,
			set: (name, value, opts) => {
				if (!allow_cookies) {
					throw new Error('Cannot set cookies in `query` or `prerender` functions');
				}

				if (opts.path && !opts.path.startsWith('/')) {
					throw new Error('Cookies set in remote functions must have an absolute path');
				}

				return event.cookies.set(name, value, opts);
			},
			delete: (name, opts) => {
				if (!allow_cookies) {
					throw new Error('Cannot delete cookies in `query` or `prerender` functions');
				}

				if (opts.path && !opts.path.startsWith('/')) {
					throw new Error('Cookies deleted in remote functions must have an absolute path');
				}

				return event.cookies.delete(name, opts);
			}
		},
		route: { id: null },
		url: new URL(event.url.origin)
	};

	// In two parts, each with_event, so that runtimes without async local storage can still get the event at the start of the function
	const validated = await with_event(cleansed, () => validate(arg));
	return with_event(cleansed, () => fn(validated));
}