Adopting Flow and TypeScript

Lately we’ve been noticing a lot of NaN’s show up in our app. We search for the source and find the following code: We sigh to ourselves, and decide maybe it’s finally time to add a type checker. We… Read more

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Keyof and Mapped Types in TypeScript 2.1

In the last few months, I’ve been playing with both Flow and TypeScript as tools for increasing the quality and reliability of the JavaScript I write at Olo. Both of these are syntax that sits on top of normal JavaScript to add type analysis—basically...

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