How to fix npm ERR! code SIGINT npm ERR! errno SIGINT npm ERR! Received SIGINT, terminating in npm

# If you just pressed Ctrl+C, the error is expected
# Simply try running the command again
npm install

# Check if a process manager is killing npm
ps aux | grep npm

# Remove corrupted dependencies and lock file
rm -rf node_modules package-lock.json

# Reinstall all dependencies
npm install

rm -rf node_modules yarn.lock
yarn install

# Instead of: npm start
# Run directly without npm:
node server.js

# For development with auto-reload:
npx nodemon server.js

const http = require('http');

const server = http.createServer((req, res) => {
  res.writeHead(200);
  res.end('Hello World\n');
});

function gracefulShutdown() {
  console.log('Received SIGINT, shutting down gracefully...');

  server.close(() => {
    console.log('Server closed. Exiting.');
    process.exit(0);
  });

  // Force shutdown after 5 seconds if graceful shutdown fails
  setTimeout(() => {
    console.error('Could not close connections in time');
    process.exit(1);
  }, 5000);
}

process.on('SIGINT', gracefulShutdown);
process.on('SIGTERM', gracefulShutdown);

server.listen(3000);

// Instead of process.on() which allows multiple calls
process.once('SIGINT', () => {
  console.log('SIGINT received once, shutting down');
  // Cleanup code here
  process.exit(0);
});

FROM node:18
WORKDIR /app
COPY . .
RUN npm install
# Run node directly (not through npm) to handle signals properly
CMD ["node", "server.js"]

jobs:
  build:
    runs-on: ubuntu-latest
    timeout-minutes: 30
    steps:
      - uses: actions/checkout@v3
      - run: npm install
      - run: npm run build