require options

Hi there,

Love the nest-commander package - very helpful to get cli functionality with nestjs 😃

Have hit a slight issue where adding the hint to indicate that a flag is required doest seem to be honoured, is that right or am I using it wrong ly. Example below to hopefully clarify what I mean…

so if i want to make an arg --sample-arg required I should

so according to the docs, using <> should make the flag required

  @Option({
    flags: '-s --sample-arg <sampleArg>',
  })
  parseArg(val: string): string {
    return val;
  }

however i can execute the command above without supplying -s flag so it looks like the option below (using [] syntax) is effectively the same

  @Option({
    flags: '-s --sample-arg [sampleArg]',
  })
  parseArg(val: string): string {
    return val;
  }

[digitalbanana]

ah ok that makes sense - thanks for clarifying…

required option would be super useful, am happy to contribute if want any help but need a pointer of where to begin :-p

[digitalbanana]

awesome thanks @jmcdo29