@fleek-platform/next-on-fleek/templates/_worker.js/utils/request.ts

`@fleek-platform/next-on-fleek` is a CLI tool that you can use to build and develop [Next.js](https://nextjs.org/) applications so that they can run on [Fleek Functions](https://fleek.xyz/docs/platform/fleek-functions/).

/**
 * Adjusts the request so that it is formatted as if it were provided by Vercel
 *
 * @param request the original request received by the worker
 * @returns the adjusted request to pass to Next
 */
export function adjustRequestForVercel(request: Request): Request {
	const adjustedHeaders = new Headers(request.headers);

	if (request.cf) {
		adjustedHeaders.set(
			'x-vercel-ip-city',
			encodeURIComponent(request.cf.city as string),
		);
		adjustedHeaders.set('x-vercel-ip-country', request.cf.country as string);
		adjustedHeaders.set(
			'x-vercel-ip-country-region',
			request.cf.regionCode as string,
		);
		adjustedHeaders.set('x-vercel-ip-latitude', request.cf.latitude as string);
		adjustedHeaders.set(
			'x-vercel-ip-longitude',
			request.cf.longitude as string,
		);
	}

	return new Request(request, { headers: adjustedHeaders });
}