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Unions Types and User Defined Type Guard #46

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basarat opened this issue Dec 10, 2015 · 2 comments
Open

Unions Types and User Defined Type Guard #46

basarat opened this issue Dec 10, 2015 · 2 comments

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@basarat
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basarat commented Dec 10, 2015

microsoft/TypeScript#1007

http://stackoverflow.com/a/34193842/390330
@HerringtonDarkholme
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Looking forward to TypeScript book updated!

I think this pull-request worth mentioning.
It refines union/intersection type inference. And it enables user-defined nullable types, which is a pain point not resolved in TS's type system but in others(alas, flow-type).

@basarat
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basarat commented Dec 11, 2015

@HerringtonDarkholme Noted for inclusion 🌹

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@basarat @HerringtonDarkholme