jsx-wrap-multilines check arrow functions without block body

[ColCh]

Aka "lambdas"

Close #790

I will duplicate issue desc here:

Given this code, check should not pass

const Grade = ({ grade }) =>
  <View style={styles.gradeContainer}>
    <Text style={styles.grade}>{grade}</Text>
  </View>;

For this code, check should pass:

const Grade = ({ grade }) => (
  <View style={styles.gradeContainer}>
    <Text style={styles.grade}>{grade}</Text>
  </View>
);

I leaved this behaviour by-default, but it can break backward compatibility?

May be It should be turned off by default?

[yannickcr]

Thanks for this.

I leaved this behaviour by-default, but it can break backward compatibility?
May be It should be turned off by default?

If I'm not mistaken, according to ESLint Semantic Versioning Policy this is a breaking change, so I'll wait for the next major release to merge it.

[ColCh]

okay, thanks!

[lencioni]

@ljharb After your Node 4+ PR this could get cleaned up a little.

[ljharb]

Good call; I'll include this in my PR.