function createCommandConfig<C>(config): C

import { createCommandConfig } from '@robojs/discordjs'

export const config = createCommandConfig({
  description: 'Greet someone',
  options: [
    { name: 'user', type: 'user', required: true },
    { name: 'message', type: 'string' }
  ]
})

// TypeScript knows: options.user is User, options.message is string | undefined
export default (interaction, options) => {
  return `Hello ${options.user.username}! ${options.message ?? 'Welcome!'}`
}

// With choices - TypeScript infers literal types
export const config = createCommandConfig({
  description: 'Pick a color',
  options: [
    {
      name: 'color',
      type: 'string',
      required: true,
      choices: [
        { name: 'Red', value: 'red' },
        { name: 'Blue', value: 'blue' }
      ]
    }
  ]
})

// TypeScript knows: options.color is 'red' | 'blue'
export default (interaction, options) => {
  if (options.color === 'red') {
    return 'You picked red!'
  }
  return 'You picked blue!'
}