chid_process.js

child_process.js

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

// Function to calculate Fibonacci (same as before)
function fibonacci(n) {
  if (n <= 1) {
    return n;
  }
  return fibonacci(n - 1) + fibonacci(n - 2);
}

// Create a child process
const child = spawn('node', ['-e', `
  process.stdin.on('data', (data) => {
    const input = JSON.parse(data.toString());
    const result = (${fibonacci})(input.number);
    console.log(JSON.stringify(result)); 
  });
`]);

// Send data to the child process
child.stdin.write(JSON.stringify({ number: 5 }) + '\n');

// Handle messages from the child process
child.stdout.on('data', (data) => {
  const result = JSON.parse(data.toString());
  console.log(`Result from child process: ${result}`);
});

// Handle errors
child.stderr.on('data', (data) => {
  console.error(`Child process error: ${data}`);
});

child.on('close', (code) => {
  console.log(`Child process exited with code ${code}`);
});