Coding Languages

Learn TypeScript

3 plans — 19 lessons

Upgrade JavaScript with types, interfaces, and safer refactors.

Beginner Path10-day sprint

10-day sprint

Learn TypeScript in 10 days

Upgrade JavaScript with types, interfaces, and safer refactors.

TypeScript setup and tooling
Type system essentials
Functions and generics
+3 more topics

Start plan

Intermediate Path14-day sprint

14-day sprint

Intermediate TypeScript in 14 days

Advanced generics, conditional types, mapped types, and utility types for real-world codebases.

Advanced generics and constraints
Conditional and mapped types
Built-in utility types
+4 more topics

Start plan

Advanced Path21-day sprint

21-day sprint

Advanced TypeScript in 21 days

Template literal types, variance, branded types, the compiler API, and monorepo TypeScript setups.

Template literal types
Variance: covariance and contravariance
Branded and opaque types
+3 more topics

Start plan

What You'll Learn

01Foundation

TypeScript setup and tooling

Configure TypeScript, tsconfig, and build scripts.

setuptoolingtsconfig

02Foundation

Type system essentials

Use primitives, unions, and type inference.

typesunionsinference

03Core

Functions and generics

Type functions, generics, and reusable helpers.

functionsgenericstyping

04Core

Interfaces and type narrowing

Model data with interfaces and refine types safely.

interfacesnarrowingmodels

05Core

Modules and project structure

Organize a typed codebase with modules and imports.

modulesstructureimports

06Challenge

Mini project: typed app

Convert a small app to TypeScript and tighten types.

projectrefactorpractice

Add types. Write safer code.

10 days to master TypeScript's type system, generics, and interfaces — stop fighting your own codebase.

Start learning

The TypeScript plan helped me confidently refactor a real project. Structured and no fluff.

— Elena K., full-stack dev

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