MBCHC/server.js

import {readFileSync} from 'node:fs'
import {createServer} from 'node:http'

const config = {host: '127.0.0.1', port: 9696}

const h_cors = {
	'Access-Control-Max-Age': '86400',
	'Access-Control-Allow-Private-Network': 'true',
	'Access-Control-Allow-Origin': '*',
	'Access-Control-Allow-Methods': 'GET, OPTIONS',
	'Access-Control-Allow-Headers': '*',
	// 'Access-Control-Allow-Credentials': 'false', // omit this header to disallow
}
const h_all = Object.assign({
	'Content-Type': 'text/javascript',
	'Cache-Control': 'no-cache',
}, h_cors)

/**
 * @typedef {import('node:http').ServerResponse} ServerResponse
 * @type {Record<string,function(ServerResponse):void>}
 */
const resp = {
	GET(rx) { rx.writeHead(200, h_all); rx.write(readFileSync('./mbchc.mjs')) },
	OPTIONS(rx) { rx.writeHead(204, h_cors) },
}

const server = createServer((rq, rx) => {
	resp[rq.method] && (new URL(`http://${config.host}:${config.port}${rq.url}`)).pathname === '/' ? resp[rq.method](rx) : rx.writeHead(400)
	rx.end()
	console.log('%s %d %s %s', (new Date()).toISOString(), rx.statusCode, rq.method, rq.url)
})
server.listen(config.port, config.host, () => console.log(`Server started at http://${config.host}:${config.port}`))