Bulk origin override

export default {
	async fetch(request) {
		/**
		 * An object with different URLs to fetch
		 * @param {Object} ORIGINS
		 */
		const ORIGINS = {
			"starwarsapi.yourdomain.com": "swapi.dev",
			"google.yourdomain.com": "www.google.com",
		};

		const url = new URL(request.url);

		// Check if incoming hostname is a key in the ORIGINS object
		if (url.hostname in ORIGINS) {
			const target = ORIGINS[url.hostname];
			url.hostname = target;
			// If it is, proxy request to that third party origin
			return fetch(url.toString(), request);
		}
		// Otherwise, process request as normal
		return fetch(request);
	},
};

export default {
	async fetch(request): Promise<Response> {
		/**
		 * An object with different URLs to fetch
		 * @param {Object} ORIGINS
		 */
		const ORIGINS = {
			"starwarsapi.yourdomain.com": "swapi.dev",
			"google.yourdomain.com": "www.google.com",
		};

		const url = new URL(request.url);

		// Check if incoming hostname is a key in the ORIGINS object
		if (url.hostname in ORIGINS) {
			const target = ORIGINS[url.hostname];
			url.hostname = target;
			// If it is, proxy request to that third party origin
			return fetch(url.toString(), request);
		}
		// Otherwise, process request as normal
		return fetch(request);
	},
} satisfies ExportedHandler;

import { Hono } from "hono";
import { proxy } from "hono/proxy";

// An object with different URLs to fetch
const ORIGINS: Record<string, string> = {
	"starwarsapi.yourdomain.com": "swapi.dev",
	"google.yourdomain.com": "www.google.com",
};

const app = new Hono();

app.all("*", async (c) => {
	const url = new URL(c.req.url);

	// Check if incoming hostname is a key in the ORIGINS object
	if (url.hostname in ORIGINS) {
		const target = ORIGINS[url.hostname];
		url.hostname = target;

		// If it is, proxy request to that third party origin
		return proxy(url, c.req.raw);
	}

	// Otherwise, process request as normal
	return proxy(c.req.raw);
});

export default app;

from workers import WorkerEntrypoint
from js import fetch, URL

class Default(WorkerEntrypoint):
    async def fetch(self, request):
        # A dict with different URLs to fetch
        ORIGINS = {
          "starwarsapi.yourdomain.com": "swapi.dev",
          "google.yourdomain.com": "www.google.com",
        }

        url = URL.new(request.url)

        # Check if incoming hostname is a key in the ORIGINS object
        if url.hostname in ORIGINS:
            url.hostname = ORIGINS[url.hostname]
            # If it is, proxy request to that third party origin
            return fetch(url.toString(), request)

        # Otherwise, process request as normal
        return fetch(request)