TypeScript: Typing JavaScript with Confidence

Defining Function Return Types

Working with Arrays of Objects

Understanding Void and Undefined

Asynchronous Functions and Promises

Union Types for Flexibility

Literal Types for Status Codes

Type Narrowing with Conditionals

The Typeof Guard

The In Operator for Object Narrowing

Discriminated Unions

Any vs Unknown

Introduction to Generics

Generics with Interfaces

Constraining Generics

Using keyof for Dynamic Access

Indexed Access Types

Partial Utility Type

Pick and Omit Utilities

Type Assertions

Non-Null Assertion Operator

Building the Task API Client: Setup

Typing API Responses

Creating a Generic Request Wrapper

Handling API Errors

Query Parameters with Generics

Implementing GET Requests

Mapping API Data to Local Models

Using DefinitelyTyped

Type declaration files (.d.ts)

Enforcing Strict Null Checks

Exhaustive Switch Statements

Mapped Types

Conditional Types

Inferring Types in Conditionals

Final Refactoring of the Task Client

Testing Type-Safe Code

Managing Environment Variables with Types

Handling Deeply Nested Data