npm-caffeine/index.js

Keep your dev session alive by pinging a port and logging uptime.

#!/usr/bin/env node

const axios = require("axios");
const chalk = require("chalk");

const args = process.argv.slice(2);

if (args.length < 1) {
  console.log(chalk.red("Usage: caffeine <url> [interval in seconds]"));
  process.exit(1);
}

const url = args[0];
const intervalSeconds = Number(args[1]) || 60;

let uptimeSeconds = 0;

console.log(
  chalk.green(
    `☕ Starting caffeine for ${url} every ${intervalSeconds} seconds...`
  )
);

const ping = async () => {
  try {
    await axios.get(url);
    console.log(
      chalk.blue(`✅ Pinged ${url} at ${new Date().toLocaleTimeString()}`)
    );
  } catch (err) {
    console.log(chalk.red(`❌ Error pinging ${url}: ${err.message}`));
  }
};

const logUptime = () => {
  uptimeSeconds += intervalSeconds;
  const minutes = Math.floor(uptimeSeconds / 60);
  const seconds = uptimeSeconds % 60;
  console.log(chalk.yellow(`⏱️  Uptime: ${minutes}m ${seconds}s`));
};

ping(); // immediate ping
setInterval(() => {
  ping();
  logUptime();
}, intervalSeconds * 1000);