Introduction to TypeScript, United Kingdom

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JavaScript is a powerful language that is ubiquitous in the Web. However, its dynamic and interpreted nature can lead to problems at scale, problems that are mitigated in other languages by compilation and static typing. TypeScript brings these benefits to the JavaScript universe.

TypeScript is a type safe superset of JavaScript that allows us to write clean, simple code that runs anywhere JavaScript does. Unlike other languages that can transpile to JavaScript, the interop between JavaScript and TypeScript is a primary engineering concern. As a superset, all JavaScript skills and legacy code are readily reusable. Type safety brings many benefits, including catching bugs at compile time instead of run time, advanced static analysis tooling, powerful refactorings, better IDE experience etc.

Delegates must be proficient JavaScript developers. However, the delivery time can be extended if have no prior knowledge of JavaScript.

Understand the importance of TypeScript and where it fits in the web ecosystem
Build a firm understanding of all core TypeScript features
Be comfortable applying both Object Oriented and Functional paradigms
Become comfortable with Algebraic Data Types and other advanced concepts

Introduction and Setup

Why do we need TypeScript?
What is Transpilation
The difference between the TypeScript compiler and Babel
Setting up a build environment with Webpack
Support for TS in the IDE
Configuring TypeScript via tsconfig.json
Decoding the transpiled output

TypeScript Fundamental

The basic types supported by TS
The power of type inference
Comparing any and unknown
The difference between Casting and Type Assertions
TypeScript as a superset of Modern JavaScript
Enhancements to function declarations
Using function types and higher order functions
How function overloading works in TypeScript
Numeric, String and const enumerations

Object Oriented TypeScript

The TypeScript class model in depth
Access modifiers and support for JavaScript private
Enforcing contracts via interfaces
Readonly properties and Accessors
Support for generic types and constraints

Advanced TypeScript

Advanced features of TS interfaces
The difference between object literals and type literals
Using string and number literals as Types
Type Aliases, Unions and Intersections
Smart Casting and Type Guards
Defining mapped types and the infer keyword
Utility types and type programming
ts-toolbelt and utility-types
Using class Decorators
Understanding Symbols
Generator functions
Writing asynchronous TypeScript

Testing TypeScript

Mock objects in a strongly typed world
Leveraging the Builder pattern
Testing asynchronous TypeScript

Upcoming Trainings

Join our public courses in our United Kingdom facilities. Private class trainings will be organized at the location of your preference, according to your schedule.

Classroom / Virtual Classroom

05 July 2024