Facebook Launches Flow, Static Type Checker for JavaScript

Re:Facebook Launches Flow, Static Type Checker for JavaScript by hyp0 on Tuesday November 18, 2014 @11:26PM (#8628266)

I strongly agree with module typing (and being more relaxed within). Because of caller dependence on modules, the difficulty of changing static types becomes a benefit. Plus, they need to be documented anyway; and tooling support helps use they as if they were primitives.

As others have said, I love the approach of inference giving static type benefits, for free. If you get tooling support, at no extra work, why not adopt it?

But static types can be a hard sell for JS programmers. What sort of reception has it gotten inside facebook?

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Re:Facebook Launches Flow, Static Type Checker for JavaScript by avik on Wednesday November 19, 2014 @11:24PM (#8634423)

Still early days but the reception has been strongly positive. We may be a biased bunch but we like our code mostly statically typed with the flexibility provided by dynamically typed languages. A large part of this culture is due to the immense internal success of Hack (http://hacklang.org/).

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