commander.js.md

   1 ---
   2 title: Commander.js
   3 category: JavaScript libraries
   4 layout: 2017/sheet
   5 ---
   6
   7 ### About
   8 {: .-intro}
   9
  10 - <https://github.com/tj/commander.js/>
  11
  12 ### Initialize
  13
  14     var cli = require('commander');
  15
  16 ### Options
  17
  18     cli
  19       .version(require('../package').version)
  20       .usage('[options] <command>')
  21       .option('-w, --words <n>', 'generate <n> words')
  22       .option('-i, --interval <n>', 'interval [1000]', 1000)
  23       .option('-s, --symbols', 'include symbols')
  24       .parse(process.argv);
  25
  26 ### Help
  27
  28     .on('--help', function() {
  29       console.log('');
  30     })
  31
  32 ### Commands
  33
  34     cli.outputHelp();
  35     cli.args == ["hello"];
  36
  37 ### Other useful things
  38
  39     process.exit(0);
  40
  41