@osjwnpm/est-fugiat-neque
v1.0.0
Published
[![github actions][actions-image]][actions-url] [![coverage][codecov-image]][codecov-url] [![License][license-image]][license-url] [![Downloads][downloads-image]][downloads-url]
Downloads
2
Maintainers
Keywords
Readme
@osjwnpm/est-fugiat-neque
parse argument options
This module is the guts of optimist's argument parser without all the fanciful decoration.
example
Example files: example/parse.js (CJS) / example/parse.mjs (ESM)
// for CJS
const argv = require('@osjwnpm/est-fugiat-neque')(process.argv.slice(2));
// for ESM
// import @osjwnpm/est-fugiat-neque from '@osjwnpm/est-fugiat-neque';
// const argv = @osjwnpm/est-fugiat-neque(process.argv.slice(2));
console.log(argv);
$ node example/parse.js -a beep -b boop
{ _: [], a: 'beep', b: 'boop' }
$ node example/parse.js -x 3 -y 4 -n5 -abc --beep=boop --no-ding foo bar baz
{
_: ['foo', 'bar', 'baz'],
x: 3,
y: 4,
n: 5,
a: true,
b: true,
c: true,
beep: 'boop',
ding: false
}
methods
const parseArgs = require('@osjwnpm/est-fugiat-neque');
const argv = parseArgs(args, opts={})
Return an argument object argv
populated with the array arguments from args
.
argv._
contains all the arguments that didn't have an option associated with
them.
Numeric-looking arguments will be returned as numbers unless opts.string
or
opts.boolean
contains that argument name. To disable numeric conversion
for non-option arguments, add '_'
to opts.string
.
A negated argument of the form --no-foo
returns false
for option foo
.
Any arguments after '--'
will not be parsed and will end up in argv._
.
options can be:
opts.string
- a string or array of strings argument names to always treat as stringsopts.boolean
- a boolean, string or array of strings to always treat as booleans. iftrue
will treat all double hyphenated arguments without equal signs as boolean (e.g. affects--foo
, not-f
or--foo=bar
)opts.alias
- an object mapping string names to strings or arrays of string argument names to use as aliasesopts.default
- an object mapping string argument names to default valuesopts.stopEarly
- when true, populateargv._
with everything after the first non-optionopts['--']
- when true, populateargv._
with everything before the--
andargv['--']
with everything after the--
. Here's an example:> require('./')('one two three -- four five --six'.split(' '), { '--': true }) { _: ['one', 'two', 'three'], '--': ['four', 'five', '--six'] }
Note that with
opts['--']
set, parsing for arguments still stops after the--
.opts.unknown
- a function which is invoked with a command line parameter not defined in theopts
configuration object. If the function returnsfalse
, the unknown option is not added toargv
.
install
With npm do:
npm install @osjwnpm/est-fugiat-neque
license
MIT