JS running CodinGame server

gistfile1.txt

#########################
### build/build_node.bat
# produces a nodejs executable with ai.js injected in
node --experimental-sea-config sea-config.json
node -e "require('fs').copyFileSync(process.execPath, 'ai.exe')" 
npx postject ai.exe NODE_SEA_BLOB sea-prep.blob --sentinel-fuse NODE_SEA_FUSE_fce680ab2cc467b6e072b8b5df1996b2 
# https://nodejs.org/api/single-executable-applications.html

#########################
### build/sea-config.json
{
  "main": "ai.js",
  "output": "sea-prep.blob",
  "disableExperimentalSEAWarning": true,
  "useSnapshot": false,
  "useCodeCache": true
} 

#########################
### build/jar.bat
# runs winter challenge, which executes 2 bot programs and runs a server for website results
# first, go back to main dir (must run from main project dir, WinterChallenge2024-Cellularena)
cd..
java -jar ./build/winter-2024.jar -p1 "build/ai.exe" -p2 "build/ai.exe" -s -l "log.txt"
# winter-2024.jar from https://github.com/httpsx/WinterChallenge2024-Cellularena

#########################
### AI.js
// below is a mechanism that connects nodejs standard input with something that resembles the readline()
let _in = [];
let promises = [];
let buffer = '';

process.stdin.setEncoding('utf8');
process.stdin.on('data', (data) => {
	buffer += data.toString();
	let lines = buffer.split('\n');
	if (lines.length > 1) {
		lines.slice(0, -1).forEach((line) => {
			_in.push(line.trim());
			});
		buffer = lines[lines.length - 1];
		onReadline();
	}
});

function onReadline(){
	while(true){
		if(!promises.length) break;
		if(!_in.length) break;
		let prom = promises.shift();
		let str = _in.shift();
		prom(str);
	}
}

function readline() {
	let resolve;
	let prom = new Promise((r) => {
		resolve = r;
	});
	promises.push(resolve);
	onReadline();
	return prom;
}


(async () => {

	//////////////
	// actual code, but must use (await readline()) instead of readline() - for example
	
	let input = await readline();
	console.log(input);
	
	// end of actual code
	
})();

#########################
### check result on:
http://localhost:8888/test.html
# or logs in:
log.txt