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59 lines
1.8 KiB
Markdown
59 lines
1.8 KiB
Markdown
# flags
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Command line arguments parser for Deno based on minimist
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# Example
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``` ts
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import { args } from "deno";
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import { parse } from "https://deno.land/x/flags/index.ts";
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console.dir(parse(args));
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```
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```
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$ deno example.ts -a beep -b boop
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{ _: [], a: 'beep', b: 'boop' }
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```
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```
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$ deno example.ts -x 3 -y 4 -n5 -abc --beep=boop foo bar baz
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{ _: [ 'foo', 'bar', 'baz' ],
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x: 3,
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y: 4,
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n: 5,
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a: true,
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b: true,
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c: true,
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beep: 'boop' }
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```
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# API
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## const parsedArgs = parse(args, options = {});
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`parsedArgs._` contains all the arguments that didn't have an option associated with
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them.
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Numeric-looking arguments will be returned as numbers unless `options.string` or
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`options.boolean` is set for that argument name.
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Any arguments after `'--'` will not be parsed and will end up in `parsedArgs._`.
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options can be:
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* `options.string` - a string or array of strings argument names to always treat as
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strings
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* `options.boolean` - a boolean, string or array of strings to always treat as
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booleans. if `true` will treat all double hyphenated arguments without equal signs
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as boolean (e.g. affects `--foo`, not `-f` or `--foo=bar`)
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* `options.alias` - an object mapping string names to strings or arrays of string
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argument names to use as aliases
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* `options.default` - an object mapping string argument names to default values
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* `options.stopEarly` - when true, populate `parsedArgs._` with everything after the
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first non-option
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* `options['--']` - when true, populate `parsedArgs._` with everything before the `--`
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and `parsedArgs['--']` with everything after the `--`. Here's an example:
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* `options.unknown` - a function which is invoked with a command line parameter not
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defined in the `options` configuration object. If the function returns `false`, the
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unknown option is not added to `parsedArgs`.
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