Function start

lib/internal/main/watch_mode.js:90–123

()

let stopping;

function start() {
  exited = false;
  stopping = false;
  const stdio = kShouldFilterModules ? ['inherit', 'inherit', 'inherit', 'ipc'] : 'inherit';
  child = spawn(process.execPath, argsWithoutWatchOptions, {
    stdio,
    env: {
      ...process.env,
      WATCH_REPORT_DEPENDENCIES: '1',
    },
  });
  watcher.watchChildProcessModules(child);
  if (kEnvFiles.length > 0) {
    ArrayPrototypeForEach(kEnvFiles, (file) => watcher.filterFile(resolve(file)));
  }
  if (kOptionalEnvFiles.length > 0) {
    ArrayPrototypeForEach(kOptionalEnvFiles,
                          (file) => watcher.filterFile(resolve(file), undefined, { allowMissing: true }));
  }
  childExitPromise = once(child, 'exit').then(({ 0: code }) => {
    exited = true;
    if (stopping) {
      return code;
    }
    const waitingForChanges = 'Waiting for file changes before restarting...';
    if (code === 0) {
      process.stdout.write(`${blue}Completed running ${kCommandStr}. ${waitingForChanges}${white}\n`);
    } else {
      process.stdout.write(`${red}Failed running ${kCommandStr}. ${waitingForChanges}${white}\n`);
    }
    return code;
  });
  return child;
}

async function killAndWait(signal = kKillSignal, force = false) {
  const processToKill = child;