7 snippets · production-ready JavaScript & TypeScript
A production-ready TypeScript Builder pattern implementation using generics to track set fields and enforce required properties at compile time, ensuring objects are only buildable when all required fields are provided.
A complete TypeScript Result<T, E> implementation providing type-safe error handling with Ok and Err variants, utility functions for transformation and extraction, and practical async usage examples.
A TypeScript EventEmitter class that provides complete type safety for event names and payloads using generics and mapped types, ensuring compile-time validation of all event operations.
Implements TypeScript branded types (nominal typing) to create distinct types from primitives, preventing accidental type confusion between semantically different values like UserId and PostId.
Demonstrates powerful TypeScript template literal types that enforce string patterns at compile time, including event naming conventions, CSS properties, route parameter extraction, and tuple joining.
A comprehensive collection of advanced TypeScript mapped types that transform object types in powerful ways, enabling precise type manipulation for real-world applications.
Learn to create powerful type utilities using TypeScript's conditional types and infer keyword, including UnwrapPromise, ReturnType, Parameters, and array element extraction.