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Thanks for the post, Dmitri. TS is still a mystery to me. 😅

You're welcome @stefanjudis!

Would I define a function type and(!) add type definitions inline or should I choose one over the other? It's seems like duplicated type definitions to me. 🤔

Normally I'd use type inference and not duplicate the types. This example is just for demonstration.

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Thanks! That makes sense. 🙇‍♂️

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Thanks for the post, Dmitri. TS is still a mystery to me. 😅

Quick question, right at the beginning there's this code example:

type Sum = (a: number, b: number) => number
// Assign to variable
const sum1: Sum = function(a: number, b: number): number { return a + b } // OK

Would I define a function type and(!) add type definitions inline or should I choose one over the other? It's seems like duplicated type definitions to me. 🤔

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Great read. Worth mentioning object/array return types e.g.
const useScreenSize: () => { width: number; height: number; screen: BreakPoint; };

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Hello Dmitri, great read you have here.
I want to know if one can define the method types as optional using "?"

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