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TypeScript in Production🏭

Intermediate→Advanced

TypeScript 5.9

Master the TypeScript compiler, configuration, and ecosystem tools for building scalable applications.

6

Sections

18

Lessons

18

Challenges

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18 lessons and 18 challenges, all 100% free.

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Essential Compiler Options

The Strict Flag Family

TSConfig Inheritance & Shared Bases

Strict Null Checks(Sign in required)

Intermediate+20 Mana

Strict Sub-Flag Count(Sign in required)

Intermediate+20 Mana

Target ES5 Downleveling(Sign in required)

Intermediate+20 Mana

Module Resolution Strategies

ESM & CJS Interop

Deferred Imports (import defer)

Path Mapping Syntax(Sign in required)

Intermediate+20 Mana

Module Resolution Matching(Sign in required)

Intermediate+20 Mana

ESM in Node.js(Sign in required)

Advanced+30 Mana

Understanding .d.ts Files

Publishing Typed Libraries

Module & Global Augmentation

Declare a Global(Sign in required)

Intermediate+20 Mana

Package Exports Order(Sign in required)

Intermediate+20 Mana

Install Types Command(Sign in required)

Beginner+10 Mana

Project References & Composite

Monorepo Strategies with TypeScript

tsc --build Mode

Composite Flag Requirement(Sign in required)

Advanced+30 Mana

Setting Up Project References(Sign in required)

Intermediate+20 Mana

Project References Syntax(Sign in required)

Advanced+30 Mana

JSDoc Type Checking with @ts-check

JavaScript to TypeScript Migration Strategy

@ts-ignore vs @ts-expect-error

Enable JS Checking(Sign in required)

Intermediate+20 Mana

JSDoc Parameter Type(Sign in required)

Intermediate+20 Mana

Valid Migration Strategies(Sign in required)

Intermediate+20 Mana

Compilation Performance

Bundler Integration & isolatedModules

lib.d.ts & Breaking Changes

isolatedModules Purpose(Sign in required)

Intermediate+20 Mana

Build Optimization Techniques(Sign in required)

Intermediate+20 Mana

skipLibCheck Target(Sign in required)

Beginner+10 Mana

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18 interactive lessons and 18 hands-on challenges — learn in VS Code, Cursor, or the web.