JavaScript with type safety and better tooling
TypeScript is a typed superset of JavaScript that compiles to plain JavaScript, adding static type checking and improved developer experience. This roadmap covers TypeScript fundamentals, type annotations, interfaces, generics, advanced types, decorators, and integration with popular frameworks. TypeScript catches errors at compile time, provides better IDE support with autocomplete and refactoring, and makes code more maintainable and self-documenting. It's widely adopted by major companies and frameworks including Angular, Vue 3, and increasingly React projects. TypeScript is essential for large-scale JavaScript applications and is becoming the standard for modern web development.
3-4 weeks
Installation, tsconfig.json, compiler options
string, number, boolean, arrays, tuples
Variable, function, parameter types
How TS infers types automatically
4-6 weeks
Interface syntax, optional properties, readonly
Type vs interface, when to use each
Combining types, type guards
String/number literals, const assertions
4-6 weeks
Generic functions, classes, constraints
Partial, Required, Pick, Omit, Record
Creating types from other types
Type conditions, infer keyword
3-4 weeks
Class syntax, constructors, properties
public, private, protected, readonly
extends, super, abstract classes
Class, method, property decorators
2-3 weeks
Import/export, default exports, re-exports
Namespace syntax, when to use
.d.ts files, @types packages
Classic vs Node resolution
4-6 weeks
Typing components, props, hooks
Backend TypeScript, Express typing
Jest with TypeScript, type testing
Strict mode, linting, migration strategies