index.js

const { spawn } = require("child_process");

const botFiles = [
  "spotify.js"
];

function startBot(file) {
  console.log(`Starting bot: ${file}`);
  const child = spawn("node", ["--trace-warnings", "--async-stack-traces", file], {
    cwd: __dirname,
    stdio: "inherit",
    shell: true,
  });

  child.on("close", (codeExit) => {
    console.log(`Bot process (${file}) exited with code: ${codeExit}`);
    if (codeExit !== 0) {
      setTimeout(() => startBot(file), 3000);
    }
  });

  child.on("error", (error) => {
    console.error(`An error occurred starting the bot (${file}): ${error}`);
  });
}

botFiles.forEach(startBot);