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This isn't used internally by Facebook at this point. The author mentioned this after your post. https://news.ycombinator.com/item?id=8108741 https://news.ycomb

by wukkuan 12y ago

This isn't used internally by Facebook at this point. The author mentioned this after your post. https://news.ycombinator.com/item?id=8108741 https://news.ycombinator.com/item?id=8108741

vineet 12y ago
Thanks! But even if it is not being used yet - do we know if Facebook uses Typescript (or some extension of it)?
bsimpson 12y ago
To clarify your point, immutable isn't in production at FB yet; we don't know about TypeScript.