Commander JS (Decorated)

"What good is a true Commander if they're not decorated?" *ba dum tss!*

Installation

npm install commander.js-decorated

Command Groups

Command Groups can be used to containerize a group of commands. Let's start by creating a simple CommandGroup.

import { CommandGroup, Command } from 'commander.js-decorated';
import { program }               from 'commander.js';


// If no name is specified, it'll convert the class name to kebab case and uses that
@CommandGroup(name?: string)
class Bucket {

	// If no name is specified, it'll convert the method name to kebab case and uses that
	@Command(name?: string)
	add() {
		console.log('Added!');
	}

	@Command()
	remove() {
		console.log('Removed!');
	}
}


// Now (Bucket as any).toCommand(); will give you a commander.js Command that you can add to your existing commander.js setup.
program.add((Bucket as any).toCommand());

Options

Option flags can be added with a decorator to each command:

import { CommandGroup, Command, Option } from 'commander.js-decorated';
import { program }                       from 'commander.js';

@CommandGroup()
class Bucket {

	@Command()
	@Option('--env', 'name of the environment')
	@Option('--foo [value]', 'some description', { validValues : [ 'bar', 'lorem' ] })
	add({ env, foo } = {}) {
		console.log('Added with env as: ' + env);
	}

	@Command()
	remove() {
		console.log('Removed!');
	}
}

Arguments

Arguments follow the same syntax as commander.js Argument.

import { CommandGroup, Command, Option } from 'commander.js-decorated';
import { program }                       from 'commander.js';

@CommandGroup()
class Bucket {
	@Command()
	@Option('--verbose')
	@Argument('[arg2...]', 'description')
	@Argument('<arg1>', 'description', { validValues : [ 'foo', 'bar' ] })
	add() {
		console.log('Removed!');
	}
}

Note that decorators are ordered from bottom -> top meaning the lower @Argument will be added first then the upper @Argument.

Roadmap

1. Nested CommandGroups: We're currently exploring different patterns and trying to determine the best solution with least amount of maintenance.
2. Custom Help Command

Contributions

All proposals are welcome!

License

                GNU GENERAL PUBLIC LICENSE
                   Version 3, 29 June 2007

Copyright (C) 2007 Free Software Foundation, Inc. https://fsf.org/ Everyone is permitted to copy and distribute verbatim copies of this license document, but changing it is not allowed.