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by ahmelsayed 4223 days ago
that's not really the actual timeline. here is the pull request for adding union types. https://github.com/Microsoft/TypeScript/pull/824

I believe all 3 teams, TypeScript, Flow, and AtScript, are working together for few things as is.
1 comments
inglor 4223 days ago
AtScript are working with TypeScript and supersets it.

If you look at that TypeScipr PR, you see it closes an issue and they reference (2 months ago) Flow there.

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