acid-chicken/cloudflare.worker.js

## cloudflare.worker.js
/// <reference lib="webworker" />

addEventListener('fetch', onFetch)

/**
 * @arg {FetchEvent} event
 */ function onFetch(event) {
  event.respondWith(handleRequest(event.request))
}

const mnt = new URL('https://mountpoint-subdomain-goes-here.example.com/')

/**
 * @arg {String} location
 */ function http301(location) {
  return new Response('', {
    headers: {
      'Location': location
    },
    status: 301,
  })
}

/**
 * @arg {String} location
 */ function http308(location) {
  return new Response('', {
    headers: {
      'Location': location
    },
    status: 308,
  })
}

/**
 */ function http404() {
  return new Response('', {
    status: 404,
  })
}

/**
 * @arg {String[]} allow
 */ function http405(...allow) {
  return new Response('', {
    headers: {
      'Allow': allow.join(),
    },
    status: 405,
  })
}

/**
 * @arg {Request} request
 */ async function handleRequest(request) {
  const { origin, pathname } = new URL(request.url)

  if (origin != mnt.origin) {
    switch (request.method) {
      case 'GET':
      case 'HEAD': return http301(mnt.origin + pathname)
      default: return http308(mnt.origin + pathname)
    }
  }

  switch (pathname) {
    case '/': switch (request.method) {
      case 'GET': return index()
      default: return http405('GET')
    }
    default: return http404()
  }
}

function index() {
  return new Response(`<!DOCTYPE html>
<html lang="en">
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width,initial-scale=1.0">
<title>Hello, world!</title>
Hello, world!`, {
    headers: {
      'Content-Type': 'text/html;charset=UTF-8',
    },
    status: 200,
  })
}
	/// <reference lib="webworker" />

	addEventListener('fetch', onFetch)

	/**
	* @arg {FetchEvent} event
	*/ function onFetch(event) {
	event.respondWith(handleRequest(event.request))
	}

	const mnt = new URL('https://mountpoint-subdomain-goes-here.example.com/')

	/**
	* @arg {String} location
	*/ function http301(location) {
	return new Response('', {
	headers: {
	'Location': location
	},
	status: 301,
	})
	}

	/**
	* @arg {String} location
	*/ function http308(location) {
	return new Response('', {
	headers: {
	'Location': location
	},
	status: 308,
	})
	}

	/**
	*/ function http404() {
	return new Response('', {
	status: 404,
	})
	}

	/**
	* @arg {String[]} allow
	*/ function http405(...allow) {
	return new Response('', {
	headers: {
	'Allow': allow.join(),
	},
	status: 405,
	})
	}

	/**
	* @arg {Request} request
	*/ async function handleRequest(request) {
	const { origin, pathname } = new URL(request.url)

	if (origin != mnt.origin) {
	switch (request.method) {
	case 'GET':
	case 'HEAD': return http301(mnt.origin + pathname)
	default: return http308(mnt.origin + pathname)
	}
	}

	switch (pathname) {
	case '/': switch (request.method) {
	case 'GET': return index()
	default: return http405('GET')
	}
	default: return http404()
	}
	}

	function index() {
	return new Response(`<!DOCTYPE html>
	<html lang="en">
	<meta charset="UTF-8">
	<meta name="viewport" content="width=device-width,initial-scale=1.0">
	<title>Hello, world!</title>
	Hello, world!`, {
	headers: {
	'Content-Type': 'text/html;charset=UTF-8',
	},
	status: 200,
	})
	}