TypeError if command name contains dashes

[pdehaan]

Using [email protected]

Basically, I want to add a --version flag, without specifying a command. The README.md file shows the following usage/help:

Usage: [command] --arg=value --arg2

Not sure if that means that I can have an optional command, or not, but so far I'm struggling to make it work. I want to call something like this from the CLI (and have it return the semver version string from my package.json file):

$ node index.js --version

Steps to reproduce:

// index.js
var celeri = require("celeri");

console.log(process.argv);

// A:
/*
celeri.option("--version", function (data) {
    console.log(data);
});
celeri.parse(process.argv);
*/

// B:
celeri.option({
    command: '--version',
    description: 'shows the current version'
}, function (data) {
    var version = require("./package.json").version;
    console.log(version);
    console.log(data);
});
celeri.parse(process.argv);

Actual results:

$ node index --version
[ 'node',
  '/Users/pdehaan/dev/tmp/celeri-tmp/index',
  '--version' ]

/Users/pdehaan/dev/tmp/celeri-tmp/node_modules/celeri/lib/plugins/argv/index.js:31
        ops.name = mainCmd.path.segments[0].value;
                          ^
TypeError: Cannot read property 'path' of undefined
    at Object.cli.option (/Users/pdehaan/dev/tmp/celeri-tmp/node_modules/celeri/lib/plugins/argv/index.js:31:21)
    at Object.<anonymous> (/Users/pdehaan/dev/tmp/celeri-tmp/index.js:14:8)
    at Module._compile (module.js:456:26)
    at Object.Module._extensions..js (module.js:474:10)
    at Module.load (module.js:356:32)
    at Function.Module._load (module.js:312:12)
    at Function.Module.runMain (module.js:497:10)
    at startup (node.js:119:16)
    at node.js:906:3

Looks like somewhere in the bowels of the code (lib/plugins/argv/index.js:31) there isn't a null check:

28: var mainCmd = cli.parseCommand(ops.command).shift();
29: 
30: 
31: ops.name = mainCmd.path.segments[0].value;
32: ops.usage = ops.usage || ops.command;

Workaround:

I can switch the command option from --version to version, but that doesnt seem very consistent w/ calling npm --version or node -v or sass --version or scss-lint --version:

$ node index version
[ 'node', '/Users/pdehaan/dev/tmp/celeri-tmp/index', 'version' ]
0.0.1
{}