Initial checklist

• I read the support docs
• I read the contributing guide
• I agree to follow the code of conduct
• I searched issues and couldn’t find anything (or linked relevant results below)

Problem

React uses the __source prop display where components originate in the React devtools.

Babel supports this in @babel/babel-plugin-transform-react-jsx-source.

Solution

Inject this prop in a similar way as @babel/babel-plugin-transform-react-jsx-source. This should only happen in development and only for React, but optionally supporting alternative runtimes.

Also I’m willing to implement this.

Alternatives

It could be an external recma plugin, but I think it’s useful to include in core.