TypeScript Mastery
Master TypeScript from basic types to advanced generics, utility types, schema validation, and real-world patterns. 16 phases covering React, Node.js, databases, and production practices.
Your Progress
Complete all 16 phases to master this track
TypeScript mastery roadmap — 8 phases covering type system fundamentals, generics, utility types, modules, React/Node.js integration, and advanced patterns.
Phase 1: TypeScript Fundamentals
Master TypeScript basics — types, interfaces, and compiler configuration.
TypeScript Setup & Config
Set up TypeScript with tsconfig.json, compiler options, and project structure.
Primitive Types
Use string, number, boolean, null, undefined, and symbol types.
Interfaces & Type Aliases
Define object shapes with interfaces and create reusable type aliases.
Arrays & Tuples
Work with typed arrays, tuples, and readonly collections.
Unions & Enums
Use union types, literal types, and enumerations for flexible type design.
Function Types
Type function parameters, return values, and optional/default parameters.
Phase 2: TypeScript Advanced Types
Master advanced type system features — generics, utility types, and type guards.
Generics
Write reusable, type-safe code with generics and generic constraints.
Utility Types
Use Partial, Required, Pick, Omit, Record, and other built-in utility types.
Type Guards & Narrowing
Narrow types with typeof, instanceof, in, and custom type guards.
Mapped & Conditional Types
Create dynamic types with mapped types, conditional types, and infer.
Phase 3: TypeScript Classes & Modules
Apply OOP in TypeScript with classes, access modifiers, and module systems.
Classes & Access Modifiers
Define classes with public, private, protected, and readonly modifiers.
Interfaces with Classes
Implement interfaces in classes and use abstract classes for contracts.
Modules & Namespaces
Organize code with ES modules, import/export, and namespace patterns.
Phase 4: TypeScript with React
Type React components, hooks, and state management with TypeScript.
Typed React Components
Type component props, children, and event handlers in React.
Typed Hooks
Type useState, useRef, useCallback, and custom hooks with TypeScript.
React TypeScript Patterns
Use generics, discriminated unions, and typed context in React apps.
Phase 5: TypeScript with Node.js
Build type-safe backend APIs with TypeScript and Node.js/Express.
TypeScript Node.js Setup
Configure TypeScript with Node.js, ts-node, and compilation steps.
Typed Express APIs
Build Express routes, middleware, and controllers with TypeScript.
Type-Safe Error Handling
Implement Result types, typed errors, and middleware error handling.
Phase 6: TypeScript Design Patterns
Apply common design patterns with TypeScript's type system.
Singleton & Factory Patterns
Implement creational patterns with TypeScript classes and interfaces.
Observer & Strategy Patterns
Implement behavioral patterns for event handling and algorithm selection.
Decorator & Adapter Patterns
Use structural patterns for extending functionality and interface adaptation.
Phase 7: TypeScript Testing & Tools
Test TypeScript code with Jest, Vitest, and type-level testing.
Jest with TypeScript
Write and run TypeScript tests with Jest and ts-jest configuration.
Vitest Modern Testing
Use Vitest for fast TypeScript testing with native ESM support.
ESLint & Prettier
Enforce code quality with ESLint rules and format with Prettier.
Phase 8: TypeScript Project
Build a complete TypeScript project demonstrating all learned concepts.
Phase 9: TypeScript Async & Error Handling
Write async TypeScript and implement type-safe error handling patterns.
Phase 10: TypeScript Schema Validation
Validate data at runtime with Zod, io-ts, and schema validation libraries.
Zod Schema Validation
Define and validate runtime data with Zod schemas and type inference.
API Request Validation
Validate API requests and responses with typed schemas.
Environment & Config Validation
Validate environment variables and config objects at startup.
Phase 11: TypeScript Advanced Patterns
Master advanced TypeScript patterns — branded types, builder pattern, and type-level programming.
Branded & Opaque Types
Create branded types for type-safe IDs and domain values.
Type-Level Programming
Write complex type-level logic with conditional and mapped types.
Advanced Inference
Use infer keyword, conditional inference, and recursive types.
Phase 12: TypeScript & Databases
Use TypeScript with ORMs and database clients for type-safe data access.
Prisma ORM
Use Prisma for type-safe database access, migrations, and queries.
Drizzle ORM
Build type-safe database queries with Drizzle ORM.
Type-Safe Database Patterns
Implement repository patterns and type-safe query builders.
Phase 13: TypeScript Build & Tooling
Configure TypeScript build tooling — bundling, ESM, and monorepo setup.
Deep tsconfig.json
Master all TypeScript compiler options and project references.
Monorepo with TypeScript
Set up TypeScript monorepos with project references and workspace configs.
ESM & Module Resolution
Configure ES modules, module resolution, and path aliases.
Phase 14: TypeScript Design Patterns
Apply common design patterns with TypeScript's type system.
Singleton & Factory Patterns (Advanced)
Implement creational patterns with TypeScript classes and interfaces.
Observer & Strategy Patterns (Advanced)
Implement behavioral patterns for event handling and algorithm selection.
Decorator & Adapter Patterns (Advanced)
Use structural patterns for extending functionality and interface adaptation.
Phase 15: TypeScript Testing & Tools
Test TypeScript code with Jest, Vitest, and type-level testing.
Jest with TypeScript (Advanced)
Write and run TypeScript tests with Jest and ts-jest configuration.
Vitest Modern Testing (Advanced)
Use Vitest for fast TypeScript testing with native ESM support.
ESLint & Prettier (Advanced)
Enforce code quality with ESLint rules and format with Prettier.
Phase 16: TypeScript Capstone Project
Build a complete TypeScript project demonstrating all learned concepts.
Frequently Asked Questions
How long does the TypeScript roadmap take?
The 8-phase TypeScript roadmap takes 6-10 weeks at 1-2 hours per day. JavaScript experience is strongly recommended before starting.
Should I learn JavaScript before TypeScript?
Yes. TypeScript builds on JavaScript. Understanding ES6+ features, closures, and async/await will make TypeScript concepts much clearer.
Does this roadmap cover React and Node.js?
Yes. Later phases cover TypeScript with React for frontend and TypeScript with Node.js/Express for backend development.