# minimist
parse argument options
This module is the guts of optimist's argument parser without all the
fanciful decoration.
# example
``` js
var argv = require('minimist')(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' }
```
# security
Previous versions had a prototype pollution bug that could cause privilege
escalation in some circumstances when handling untrusted user input.
Please use version 1.2.3 or later: https://snyk.io/vuln/SNYK-JS-MINIMIST-559764
# methods
``` js
var parseArgs = require('minimist')
```
## var 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` 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. if `true` 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, populate `argv._` with everything after the
first non-option
* `opts['--']` - when true, populate `argv._` with everything before the `--`
and `argv['--']` 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 the `opts` configuration object. If the function returns `false`, the
unknown option is not added to `argv`.
# install
With [npm](https://npmjs.org) do:
```
npm install minimist
```
# license
MIT
