web-support not compatible with typescript

Even if I wanted to transpile all the RN dependencies from flow, there isn't any way to use both. Even using [babel 7's typescript preset](http://babeljs.io/blog/2017/09/12/planning-for-7.0#typescript) yields `Module build failed: Error: Cannot combine flow and typescript plugins.`

I think the correct approach would be to bundle the dependencies with the distribution until they themselves distribute properly transpiled code.