node promisify without err

1function promisify(func, callbackPos) {
2  return (...args) => {
3    return new Promise((resolve) => {
4      const cb = (...args) => {
5        resolve(args);
6      };
7      args.splice(callbackPos ? callbackPos : args.length, 0, cb);
8      func(...args);
9    });
10  };
11};

1function promisify(func, callbackPos) {
2  return (...args) => {
3    return new Promise((resolve) => {
4      const cb = (...args) => {
5        resolve(args);
6      };
7      args.splice(callbackPos ? callbackPos : args.length, 0, cb);
8      func(...args);
9    });
10  };
11};
12
13// Example:
14
15// Import readline
16const readline = require('readline');
17const rl = readline.createInterface({
18  input: process.stdin,
19  output: process.stdout
20});
21
22// Promisify rl.question
23const asyncQuestion = promisify(rl.question.bind(rl));
24
25(async () => {
26  // Call asyncQuestion (Get some input from the user)
27  // Here we get all params back in an array
28  const input = (await asyncQuestion('Type something: '))[0];
29  console.log('You typed: ' + input);
30  
31  // We can also use this syntax
32  [someOtherInput] = await asyncQuestion('Another input: ');
33  console.log('You typed: ' + someOtherInput);
34})();