npm-hook.js

#!/usr/bin/env node

const fs = require('fs');
const readline = require('readline');

const commitFile = process.argv[2];

const fromIDE = !process.stdout.isTTY;
if (fromIDE) {
 process.exit(0);
}

const input = fs.createReadStream('/dev/tty');
const rl = readline.createInterface({
 input: input,
 output: process.stdout
});

rl.question('What do you think of Node.js? ', function (answer) {
 rl.close();
 input.close();

 var message = fs.readFileSync(commitFile);
 message = answer + "\n" + message;
 fs.writeFileSync(commitFile, message);
});