feat: add conditional propType

[Mohammer5]

This is the counterpiece to oneOfType. While oneOfType allows all supplied propTypes, conditional will pick a propType based on the result of a condition callback.

const Component = ({ multiple, selected, optons }) => {
  const selectedOptions = multiple ? selected : [selected]

  return // jsx
}

Component.propTypes = {
  multiple: propTypes.bool,
  selected: conditional(({ multiple }) => multiple
    ? propTypes.arrayOf(propTypes.string)
    : propTypes.string
  ),
}

[varl]

Nice. Looks good to me. This could probably be used for the Select components for ui@5, @HendrikThePendric, if we move to string values.

[dhis2-bot]

🎉 This PR is included in version 1.6.0 🎉

The release is available on:

• npm package (@latest dist-tag)
• GitHub release

Your semantic-release bot 📦🚀

[HendrikThePendric]

Nice one 😄

This could probably be used for the Select components for ui@5, @HendrikThePendric, if we move to string values.

Yup I can 👍

[HendrikThePendric]

@Mohammer5 Very sorry.... I should have reviewed this much sooner.... But there are a few things missing:

• This new prop-validator should be attached to the propTypes object in ./src/index.js
• It should get added to the docs