Add exception option in jsx-curly-newline for object literals

Hello!

Like react/jsx-curly-spacing, it would be nice if there was an option to specify newline behavior for object literals (or other specific types of contents) in JSX.

For example, the config:

'react/jsx-curly-newline': ['error', {
  multiline: 'require',
  singleline: 'forbid',
}],

requires the following:

<Transition
  { ...transitionProps }
  config={
    {
      clamp: true,
      friction: 25,
      tension: 350,
    }
  }>
  {
    (item) => (style) => (
      <animated.div style={ style }>
        { this.props.children(item) }
      </animated.div>
    )
  }
</Transition>

However I would like to express object literals like the following example, while also forcing any other types of multiline values to have newlines:

<Transition
  { ...transitionProps }
  config={{
    clamp: true,
    friction: 25,
    tension: 350,
  }}>
  {
    (item) => (style) => (
      <animated.div style={ style }>
        { this.props.children(item) }
      </animated.div>
    )
  }
</Transition>

Right now I am using multiline: consistent to allow this, but it has the downside of allowing blocks like:

  { (item) => (style) => (
      <animated.div style={ style }>
        { this.props.children(item) }
      </animated.div>
  ) }

which is something I don’t want allowed.

[UncleClapton]

I wasn’t exactly going for consistency as much as I was trying to remove new lines that I saw as superfluous.

However now that you’ve mentioned it, the inconsistency would make things more confusing to those who don’t see it the same way. Thanks, I didn’t consider that!

I suppose this could be closed unless someone else wants this feature.

[DOOMDANY]

Do you have any news in this topic, I really would like to have those exceptions as features 😃