JavaScript execute Flake8 formatter

flake8.js

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

const pythonCode = `def hello_world():
    print("Hello, World!")`;

exec(`echo "${pythonCode}" | python -m flake8 -`, (error, stdout, stderr) => {
  if (error) {
    console.error(`exec error: ${error}`);
    return;
  }
  console.log(`stdout: ${stdout}`);
  console.error(`stderr: ${stderr}`);
});