babel-plugin-server Transform Valueless Props

[88kami88]

Fixes #73

babel-types/ObjectProperty expects a babel-types null literal or empty JSX expression when the value of an attribute is not given.

If the attribute value is null, use .nullLiteral(). If the attribute value is undefined, use jSXEmptyExpression.

There are no tests for babel-plugin-server that I can find.

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[shuhei]

A prop value is true by default. https://facebook.github.io/react/docs/jsx-in-depth.html

Does this implementation work like that?

[88kami88]

So this is a babel plugin that transforms a createElement call into an object representation of an element. React will still handle turning the valueless prop into a true value.

There might be performance gains to be had by transforming no value into true though, I'll have to look into it.

[88kami88]

@divmain I'm not sure how to rectify this error. I committed an empty line:

msg — Commit message for 7c9ef24 must have empty second line. Required