Commander.js: option string is always Undefined

[mtrabelsi]

#!/usr/bin/env node

const program = require('commander');

program
  .command('verify <hash>')
  .option('-r, --root <root>', 'Root of the channel')
  .action(function (hash) {
    // console.log('remove ' + dir )
    console.log(hash, program.root)
  })
program.parse(process.argv)

Command line :

$ testit verify hashhh -r rootttt
hashhh undefined

it is not possible to get the passed string via options!
version 2.19.0

[vanesyan]

You should be able to receive provided option as second argument of callback passed to Commander.action, e.g.:

const program = require('commander');

program
  .command('verify <hash>')
  .option('-r, --root <root>', 'Root of the channel')
  .action(function (hash, options) {
    // console.log('remove ' + dir )
    console.log(options.root);
    console.log(hash);
  })

program.parse(process.argv)

See also corresponding test: https://github.com/tj/commander.js/blob/3b8e519f963f7a2cb66adb671f05c56cd68af6da/test/test.options.commands.js#L36

[mtrabelsi]

very bad, the documentation is outdated, thousands of people will go crazy debugging this issue - just a time waste

[shadowspawn]

Thanks for taking the time to provide a customised example in your reply @vanesyan

There is actually an example of this in the README @mtrabelsi, down the bottom:
https://github.com/tj/commander.js#examples

.action(function(cmd, options){
    console.log('exec "%s" using %s mode', cmd, options.exec_mode);