rand.js

index.js

#!/usr/bin/env node
const { Manager, Command, Option, Argument } = require('@jitesoft/cli');
const random = require('@jitesoft/random-string').default;

const manager = new Manager('random-string', 'Generate random strings.');
manager.register(
  new Command('gen', 'Generate a string.', {
    args: [
      new Argument('length', 'Length of the random string', true, Number)
    ],
    options: [
      new Option('spec', 'Special characters, 0 means none, number means minimum amount in generated string.', ['s'], true, Number, false),
      new Option('alpha', 'Alpha characters, 0 means none, number means minimum amount in generated string.', ['a'], true, Number, false),
      new Option('num', 'Numeric characters, 0 means none, number means minimum amount in generated string.', ['n'], true, Number, false),
    ]
  }, (_, input, args, options) => {

    const len = parseInt(args[0].value);
    const alpha = options.has('alpha') ? parseInt(options.get('alpha').value) : len / 3;
    const num = options.has('num') ? parseInt(options.get('num').value) : len / 3;
    const special = options.has('spec') ? parseInt(options.get('spec').value) : len / 3;

    return Promise.resolve(random(len, {
      alpha: alpha !== 0,
      minAlpha: alpha,
      numbers: num !== 0,
      minNumbers: num,
      special: special !== 0,
      minSpecial: special
    }));
  })
);

Promise.resolve(manager).then((mng) => {
  return mng.invoke();
}).then((result) => {
  console.log(result);
}).catch((error) => {
  console.error(error.message);
}).finally(() => {
  process.exit(1);
});

package.json

{
  "name": "random-string",
  "version": "1.0.0",
  "bin": "index.js",
  "author": "",
  "license": "ISC",
  "dependencies": {
    "@jitesoft/cli": "^2.5.0",
    "@jitesoft/random-string": "^1.0.0"
  }
}