functional-constructs-types

Functional programming constructs (map, filter, reduce) work better with TypeScript than imperative loops.

TypeScript's type inference works particularly well with functional constructs. They produce intermediate types that flow naturally, whereas loops require you to manually track types.

TypeScript infers the output type from the input type and the mapping function.

在循環中建立數組時使用。當類型不流經代碼時使用。在考慮映射/過濾/歸約時使用。 來源：marius-townhouse/effective-typescript-skills。