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Popular Documentation Pages

Basic Types
JavaScript primitive types inside TypeScript
Advanced Types
TypeScript language extensions to JavaScript
Functions
How to provide types to functions in JavaScript
Interfaces
How to provide a type shape to JavaScript objects
Variable Declarations
How to create and type JavaScript variables
TypeScript in 5 minutes
An overview of building a TypeScript web app
TSConfig Options
JavaScript primitive types inside TypeScript
Classes
How to provide types to JavaScript ES6 classes

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Using TypeScript

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Why TypeScript
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See how TypeScript improves day to day working with JavaScript with minimal additional syntax.
JavaScript Essentials
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Classes 101
This
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TypeScript with Web
TypeScript with React
TypeScript with Deno
TypeScript with Node
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Helping with JavaScript
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Explore how TypeScript extends JavaScript to add more safety and tooling.
Primitives
Any
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Type Widening and Narrowing
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Nominal Typing
Types vs Interfaces

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