Adding typescript broke the docs build and is causing issues with create-react-app bundler. Let's use a small hack to hide it from static analysis, but still works in node.
Fixes#986
* WIP immediate feedback
* typescript parser is drop-in replacement for flow parser
* Add new TypeScript Parser snapshots where drop-in replacement possible
* Snapshot updates after rebasing
* Remove unnecessary stripping of properties on TypeScript parser AST
* Remove annotated issues
* Move TS dependencies to dev for now
* Use babel-code-frame for syntax errors
* Support the `--color` option more explicitly
* Update rollup config to handle babel-code-frame
* Use exact dependencies
Christopher Chedeau