Tag: TypeScript

Table of Contents Introduction What is a Declaration File? Benefits of Using Custom Type Declarations How to Create a .d.ts File Example: Creating a Custom Declaration for a Library Using...

Table of Contents Introduction The Need for Type Definitions in TypeScript Understanding DefinitelyTyped and @types Installing Type Definitions from DefinitelyTyped Working with Libraries Without Type Definitions Creating Custom Type Definitions Conclusion Introduction TypeScript...

Table of Contents Introduction The Basics of Error Handling Using Try/Catch with Async Functions Handling Multiple Async Operations Returning Errors from Async Functions Handling Errors with Promise.all and Promise.race Graceful Error...

Table of Contents Introduction Understanding Async/Await Syntax Type Safety with Async Functions Typing Promise<T> Return Types Typing Parameters for Async Functions Handling Multiple Async Operations Error Handling in Async/Await Functions Using Type...

Table of Contents Introduction What Are Promises in JavaScript and TypeScript? The Basics of Working with Promises Typing Promises in TypeScript Working with Promise<void> and Promise<never> Chaining Promises in TypeScript Handling...

Table of Contents Introduction What is Type Casting and Type Assertion? Difference Between Type Casting and Type Assertion Type Casting Best Practices Type Assertion Best Practices Common Pitfalls and How...

Table of Contents Introduction What Are Discriminated Union Types? Discriminated Unions with Literal Types Exhaustive Type Checking: What It Is and Why It’s Important Implementing Exhaustive Type Checking in...

Table of Contents Introduction What Are User-Defined Type Guards? Syntax of User-Defined Type Guards Why Use Custom Type Guards? Creating Custom Type Guards Example 1: Checking for Specific Properties in...

Table of Contents Introduction What Are Type Guards in TypeScript? typeof Type Guard Definition and Syntax Use Cases and Examples instanceof Type Guard Definition and Syntax Use Cases and Examples Practical Examples Example 1:...

Table of Contents Introduction Overview of Utility Types in TypeScript ReturnType<T> Definition and Syntax Use Cases and Examples Parameters<T> Definition and Syntax Use Cases and Examples ConstructorParameters<T> Definition and Syntax Use Cases and Examples InstanceType<T> Definition and...

Table of Contents Introduction Overview of Utility Types in TypeScript Pick<T, K> Definition and Syntax Use Cases and Examples Omit<T, K> Definition and Syntax Use Cases and Examples Record<K, T> Definition and Syntax Use Cases...

Table of Contents Introduction What Are Utility Types in TypeScript? Overview of Partial, Required, and Readonly Utility Types Partial<T> Definition and Syntax Use Cases and Examples Required<T> Definition and Syntax Use Cases and...