[ui.dev] Learn TypeScript

[ui.dev] Learn TypeScript Free Download.

[ui.dev] Learn TypeScript Description

OUTLINE

Introduction

  • Introduction, Philosophy, and Tips
  • Projects (What you’ll build)

We’ll start the course off with some housekeeping items. You’ll learn about the best strategy for getting the most out of the course as well as what you’ll build during the course.

Typing in JavaScript

  • JavaScript Types
  • (Quiz) JavaScript Types

Types are fundamental to TypeScript, so naturally you’ll need to be familiar with the base types that exist in JavaScript.

Basic Type Checking

  • Implicit Type Checking
  • (Quiz) Implicit Type Checking
  • Adding Type Annotations
  • (Quiz) Adding Type Annotations
  • Typing Function Declarations
  • (Quiz) Typing Function Declarations
  • (Practice) Type Annotations
  • (Solution) Type Annotations

Now that you’re all set up, you can start writing TypeScript code! You’ll learn about the TypeScript type checker and how to write type annotations when the type checker can’t automatically infer them.

Project: Tic Tac Toe

  • (Project) Base Project
  • (Project) Adding Base Types
  • (Project) Button Event Handler
  • (Project) Win Condition

At this point, you’ve learned enough to actually build a program in TypeScript! We’ll make Tic Tac Toe using TypeScript so you can get a feel for how to write type definitions that match the data structures you use in your code.

Advanced TypeScript Types

  • TypeScript Operators
  • (Quiz) TypeScript Operators
  • (Bonus) Advanced Function Typing

TypeScript comes with its own set of operators which you can use to transform your types. You’ll also learn about some special ways to add type annotations to functions.

Generics

  • Generics
  • (Quiz) Generics
  • (Bonus) Zustand Implementation
  • (Practice) Generics
  • (Solution) Generics

Just like you can write functions to reuse code, you can write generic types to reuse type definitions throughout your codebase. We’ll even look at a real-world library to see how it uses generics.

Modules

  • (Bonus) From IIFEs to CommonJS to ES6 Modules
  • (Bonus) ES Modules In Depth
  • Modules in TypeScript
  • (Quiz) Modules in TypeScript
  • (Bonus) TypeScript Namespaces

Modules are all about getting code from one file into another file. TypeScript has a nuanced approach to modules, so you’ll learn what things to watch out for as you use modules in your TypeScript code.

Advanced TypeScript Configuration

  • Additional TSConfig.json options
  • (Quiz) Additional TSConfig.json options
  • (Bonus) How the `target` field works
  • Module Resolution
  • (Quiz) Module Resolution
  • (Bonus) Configuring for Webpack Development
  • (Bonus) Configuring for Babel Development
  • (Bonus) Configuring for Modern Web Development
  • (Bonus) Configuring for Node Development
  • (Bonus) Configuring for Library Development with TSDX

There are a lot more configuration options for TypeScript, so you’ll learn about a few more. You’ll also learn how to configure TypeScript for several different development environments.

Extra Topics

  • Unexpected TypeScript Behavior
  • (Quiz) Unexpected TypeScript Behavior
  • (Bonus) Experimental Decorators

In this section you’ll learn about all the things that don’t really fit with the normal flow of the course.

TypeScript Overview

  • (Pre-req) Glossary
  • Why TypeScript?
  • (Quiz) Why TypeScript?
  • (Bonus) ECMAScript, TC39, and the Standardization process

Whenever you learn a new tool, you should first ask yourself why it’s necessary. If you can’t answer that question, you may not need it. In this section, we’ll answer that question in regards to TypeScript as well as cover some other programming fundamentals that TypeScript utilizes. We’ll also do a quick refresher on how JavaScript (and thus TypeScript) features are standardized.

Getting TypeScript Configured

  • Basic TypeScript Configuration

TypeScript is both a type checker and a compiler, so you’ll need to install it to use it with your projects. You’ll also learn about the most important configuration settings for TypeScript.

Special TypeScript Types

  • `any` and `unknown` types
  • (Quiz) `any` and `unknown` types
  • Interfaces
  • (Quiz) Interfaces
  • (Practice) Interfaces
  • (Solution) Interfaces
  • Enum and Tuple Types
  • (Quiz) Enum and Tuple Types
  • Void and Never Types
  • (Quiz) Void and Never Types
  • `type` aliases
  • (Quiz) `type` aliases
  • Union Types
  • (Quiz) Union Types
  • Intersection Types
  • (Quiz) Intersection Types
  • Literal Types
  • (Quiz) Literal Types
  • (Practice) Union & Literal Types
  • (Solution) Union & Literal Types

TypeScript includes a few special types which it uses to augment the types that come with JavaScript. You’ll learn how you can use these to add better type safety to your programs.

Classes

  • Class Definition
  • (Quiz) Class Definition
  • Class Modifiers
  • (Quiz) Class Modifiers
  • (Practice) Classes
  • (Solution) Classes

In this section you’ll learn about how to define classes and some special features that TypeScript provides to give your classes a bit of extra type safety.

Type Narrowing

  • Common Type Guards
  • (Quiz) Common Type Guards
  • Handling null and undefined
  • (Quiz) Handling null and undefined
  • (Practice) Narrowing Types
  • (Solution) Narrowing Types
  • (Bonus) Structural vs Nominal Typing
  • Discriminating Unions
  • (Quiz) Discriminating Unions
  • (Practice) Discriminating Unions
  • (Solution) Discriminating Unions
  • Assertion Signatures
  • (Quiz) Assertion Signatures
  • User Defined Type Guards
  • (Quiz) User Defined Type Guards
  • (Practice) User Defined Type Guards
  • (Solution) User Defined Type Guards

Often, you’ll find that you have a value that could be several different types. How can you tell what type it actually is? Once you learn about Type Narrowing, you can add runtime checks to determine the type of any value.

Transformation Types

  • (Bonus) Thinking In Types
  • Mapped Types
  • (Quiz) Mapped Types
  • Conditional Types
  • (Quiz) Conditional Types
  • (Practice) Utility Types
  • (Solution) Utility Types

Once you understand generics, a whole world of possibility opens up. You can use TypeScript operators with generic types to transform your types in really powerful ways. You’ll apply what you learn by recreating the utility types that ship with TypeScript!

Declaration Files

  • Built-In Type Definitions
  • (Quiz) Built-In Type Definitions
  • (Bonus) Outputting TypeScript Definitions
  • Definitely Typed and @types/ packages
  • (Quiz) Definitely Typed and @types/ packages
  • (Bonus) Typing an NPM module that has no types

What happens when you want to use JavaScript code in TypeScript? Can you even do that without sacrificing type safety? Yes, you can, with declaration files. You’ll learn about the type definitions that ship with TypeScript, third-party type definitions, and how to write your own type definitions for third-party modules.

Advanced Transformation Types

  • Recursive Conditional Types
  • Template Literal Types
  • Mapped Types Key Remapping

TypeScript 4.1 may have come out a week before this course launched, but that doesn’t mean you won’t learn about the new goodies that came with it! You’ll learn about several new transformation types that come with the latest version of TypeScript.

Project: Web Server

  • (Project) Initial Node.js Setup
  • (Project) Static Web Server
  • (Project) Multiple Routes
  • (Project) Dynamic API Route

Now that we know a bit more about configuring TypeScript, we’ll use this knowledge to write a Node.js server using TypeScript. We’ll handle the request and response object, create a few routes, and even grab some dynamic data.

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