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Optimizing TypeScript Code with Advanced Type Manipulation and Generics

Tutorial September 02, 2024
typescript

The infer keyword allows you to extract and work with types within conditional types. It's particularly useful in more complex type manipulations.

type ReturnType<T> = T extends (...args: any[]) => infer R ? R : any;

type FunctionReturnType = ReturnType<() => string>; // string