TypeScript Pro Essentials by Matt Pocock | Total TypeScript (NEW 2024)
English | Tutorial | Size: 3.43 GB
You’ve tested the waters with TypeScript, but deep down you know that you’re missing something. You’ve heard that TypeScript is the answer to all the problems that come with JavaScript- things like clunky autocompletion, runtime errors, and scaling for large projects. So why do you still feel like you’re not getting the most out of TypeScript? You keep hitting type-related roadblocks, struggle with configuration, and feel limited by your understanding of the more advanced features. You know it’s time to push yourself further, but you’re not sure where to start. What you’ve heard about TypeScript is true. It will help you catch errors before they happen, write cleaner code, and refactor with confidence. But to get there, you need a guide.
Total TypeScript Pro Essentials is what you’ve been looking for. This workshop is your map to becoming a TypeScript Wizard.
With over 200 lessons in 17 sections, this workshop will help you build a deep understanding of TypeScript at every level.
From configuration and IDE setup, to advanced type manipulation and best practices for application development, Total TypeScript Pro Essentials has it all. Whether you’re brand new to TypeScript or have been using it for years, you are sure to take away valuable knowledge and skills from this workshop.
Here’s what’s included:
Introduction to TypeScript
Kickstart your TypeScript setup with a refresher on the core benefits and concepts of TypeScript: initial configuration, the TypeScript compiler, and type inference.
Follow the recommended setup and extensions for your editor, with a focus on Visual Studio Code, and become familiar with features like navigation, autocompletion, refactoring, and writing self-documenting code.
Understand TypeScript’s role in the build process, and why browsers need help understanding the syntax. Structure your project to work nicely with the compiler, and configure for working with modern build tools like Vite and hot module replacement (HMR). Practice setting up type checking in a CI/CD pipeline, preventing errors from reaching production.
TypeScript Fundamentals
Reinforce your foundational skills by working with TypeScript’s essential types and annotations. You’ll work with function parameters and return types, and model data with object literal types, arrays, and tuples. Write reusable type aliases, correctly type async code, and handle data that comes from external sources. Create more flexible types by using unions, intersections, and interfaces.
Write more expressive code that refines types through several narrowing techniques, and recognize the role of any, never, and unknown in your codebase.
Objects, Classes, and Mutability
Types, interfaces, and classes all have their place in TypeScript. Learn the differences between them, and how to choose the right structure for your needs. Work with dynamic data in objects, and and overcome index signature limitations by using mapped types. Practice using essential type helpers like Pick, Omit, and Partial, and how to build your own helper when you need to.
Develop the mental model for how mutability affects type inference and safety. Recognize the benefits of immutable data structures, and how to work around their quirks.
Apply object-oriented programming principles to your TypeScript code. Understand the role of classes, constructors, and access modifiers, and how to use inheritance and composition to build complex systems that follow real-world design patterns.
Working with the Compiler
Harness the power of the TypeScript compiler to derive types from values, while furthering your understanding of type inference. Create new kinds of type aliases, and use indexed access types to target nested properties.
Recognize when TypeScript needs your help through type annotations and assertions, and the purpose of as, asserts, and satisfies. Apply these techniques to real-world scenarios like working with DOM APIs, parsing JSON, and creating configuration objects.
Understanding the Environment
Distinguish between TypeScript modules and scripts, and prevent global scope pollution. Provide types for JavaScript files and third-party libraries, and understand the role of ambient declarations.
Safely modify global interfaces like Window through declaration merging, work with namespaces like JSX, and understand when to use .d.ts type definition files vs. modules.
Learn best practices for configuring TypeScript’s behavior based on the type of project you’re working on. Adjust strictness levels, module resolution, and generate type declaration files. Use TypeScript as a linter, and optimize build performance for large projects.
Advanced Application Development
Understand the core differences between CommonJS (CJS) and ES Modules (ESM), and how TypeScript handles module syntax. Learn to use file extensions for guiding module resolution, and configure TypeScript settings for more consistent behavior. Make informed decisions about when to adopt ESM into your projects, and build libraries that support both CJS and ESM consumers for maximum compatibility.
Practice domain modeling by representing real-world concepts and encoding business logic within your types. Establish single sources of truth for type definitions, and create reusable generic type utilities. Enforce stricter type checking with well-placed constraints.
Combine generics and function overloads for maximum flexibility, and create custom type guards and predicates to enhance type inference. Create type-safe APIs with template literal types, mapped types, and custom error types.
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