Interesting. Do you mean that Rome won’t perform type-checking in TypeScript/Flow, it just strips their type annotations (like their respective Babel plugins do today)? If so, is the idea that people might continue to use the tsc/flow binaries in parallel with Rome (e.g. if they want to validate types in a commit hook, or for in-editor linter-style warnings)?

I've been really looking forward to this source release since reading your tweets about it. Sorry it got posted to HN before you wanted it to, but thanks for making the code public at this stage.