parse command line arguments.
// example/parse.js
import { parse } from '@1n/argv'
const argv = parse(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 foo bar baz
{
_: ['foo', 'bar', 'baz'],
x: 3,
y: 4,
n: 5,
a: true,
b: true,
c: true,
beep: 'boop'
}
import { parse } from '@1n/argv'
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
is set for that argument name.
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 strings -
opts.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 aliases -
opts.default
- an object mapping string argument names to default values -
opts.stopEarly
- when true, populateargv._
with everything after the first non-option -
opts['--']
- when true, populateargv._
with everything before the--
andargv['--']
with everything after the--
. Here's an example:
import { parse } from '@1n/argv'
parse('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
.
With npm do:
npm i @1n/argv
MIT