A fast and ultra lightweight CLI argument parser.

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npm i @hypernym/args

• TypeScript friendly
• Fully tree-shakeable
• No dependencies

Unprefixed inputs are stored in an array.

$ arg

# => { _: ['arg'] }

$ arg-a arg-b arg-c

# => { _: ['arg-a', 'arg-b', 'arg-c'] }

Inputs with -- prefix are parsed as flags.

By default, standalone flags with no value are defined as true.

$ --flag

# => { _: [], flag: true, }

$ --flag value

# => { _: [], flag: 'value', }

Inputs with - prefix are parsed as aliases.

By default, standalone aliases with no value are defined as true.

$ -alias

# => { _: [], alias: true, }

$ -alias value

# => { _: [], alias: 'value', }

• Ignores standalone inputs -- and -
• Ignores all inputs that include =

$ --flag=value -- arg=value - -alias=value

# => { _: [] }

$ hello world --foo bar -baz -cli demo --fuz

import { createArgs } from '@hypernym/args'

interface Args {
  foo?: string
  baz?: boolean
  cli?: string
  fuz?: boolean
}

const args = createArgs<Args>()

console.log(args)

/* Output:
{
  _: ['hello', 'world'],
  foo: 'bar',
  baz: true,
  cli: 'demo',
  fuz: true
}
*/

• Type: string[]
• Default: process.argv.slice(2)

const args = createArgs({
  argv: process.argv.slice(2),
})

• Type: object
• Default: undefined

const args = createArgs({
  alias: {
    config: ['conf', 'c'],
    help: 'h',
  },
})

Feel free to use the official discussions for any additional questions.

Developed in 🇭🇷 Croatia

Released under the MIT license.

© Hypernym Studio