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optymista

v1.0.0

Published

Argv parser. Like `optimist` but using node's `util.parseArgs`.

Downloads

84

Readme

NPM version Build Status

optymista

Argv parser. Like optimist but using node's util.parseArgs.

Install

$ npm install --save optymista

Usage

const { argv } = require('optymista')
  .usage('noble-gas [options]')
  .boolean('verbose').describe('says everything')
  .describe('name', 'name of the gas').short('N').default('argon');

if (argv.verbose) {
  console.log('starting');
}

console.log('name:', argv.name);

API

Fluid API corresponding to util.parseArgs options:

  • boolean(), string() - set option type to boolean or string - boolean is the default
  • default() - sets option default value
  • multiple() - option can be provided multiple times and all values will be collected in an array
  • short() - provides a one letter alternative to longer POSIX style option
  • option() - can be used to directly provide one or more option properties
  • version() - implements --version,-V support - if no version is passed optymista will try to read one from the package.json file

Help is automatically generated based on the information provided through usage and descibe

  • usage() - one or more strings that will form help text header
  • describe() - option description
  • showHelp() - display the help text on standard output

-h|--help is automatically added to the list of options and treated as a request to show help text.

In case of any parsing errors help and the message associated with thrown exception is displayed.

Methods can be chained with option name used only in the first method:

string('width').short('w').string('height').short('h')

License

MIT © Damian Krzeminski