TypeScript 5+ Fundamentals, v4

• Develop a comprehensive understanding of TypeScript features, including variable typing, function signatures, union and intersection types, type aliases, and generics.
• Learn to effectively transition JavaScript codebases to TypeScript for improved maintainability and robustness.
• Gain expertise in defining complex data structures and creating scalable applications using TypeScript’s advanced type system.
• Enhance your development workflow by integrating TypeScript with modern frontend and backend JavaScript frameworks.
• Understand the benefits of type safety and how it helps in catching errors at compile time, leading to more reliable code.

This course on TypeScript provides an in-depth exploration of the language's key features and its integration into modern JavaScript development. Students will learn how TypeScript enhances code quality by reducing bugs and improving maintainability through static type checking. Through hands-on exercises and real-world examples, learners will transition their codebases to TypeScript, mastering its features and applying best practices for building robust applications.

• JavaScript developers interested in adopting TypeScript for enhanced type safety and error checking.
• Frontend and backend developers seeking to improve code maintainability and scalability.
• Software engineers looking to leverage TypeScript’s advanced features for building complex applications.
• Teams aiming to implement a consistent and reliable development workflow across projects.

• Basic understanding of JavaScript and ES6 features.
• Familiarity with frontend or backend development environments.
• Experience with modern development tools and practices is beneficial.

• Introduction: Learn about the importance of types in TypeScript and an overview of the course structure, including key topics such as variables, types, and generics.
• Workshop Setup: Set up the development environment with Volta and Yarn, understanding the role of TypeScript in maintaining type consistency across fullstack applications.
• Variables and Values: Understand how to compile TypeScript with the CLI, work with variable declarations and inference, and perform type casting to manage values effectively.
• Functions & Return Types: Discover how to use type annotations in functions, manage return types, and incorporate ESLint to catch type errors and improve code reliability.
• Objects, Arrays, and Tuples: Explore how to define object types, use index signatures, create tuples with the readonly keyword, and understand structural vs. nominal typing.
• Union and Intersection Types: Conceptualize union and intersection types to represent complex data structures and understand control flow using discriminated unions.
• Interfaces and Type Aliases: Learn to create interfaces and type aliases for simplifying complex type definitions, including extending interfaces and implementing type aliases.
• Type Queries, Callables & Constructables: Explore advanced concepts like type queries, the type registry pattern, callable types, constructables, function overloads, and this types.
• Classes & Type Guards: Discover how TypeScript enhances JavaScript classes with fields, methods, access modifiers, param properties, and type guards for runtime type checking.
• Generics: Learn when and how to use generics to create reusable, type-safe solutions and understand best practices for integrating generics into TypeScript functions.
• Wrapping Up: Recap of the TypeScript fundamentals and a practice exercise to apply learned concepts through writing utility functions like map, filter, and reduce.