TypeScript for JavaScript Devs (Free) – Learn JavaScript

About TypeScript for JavaScript Devs (Free)

TypeScript is a superset of JavaScript – these free courses teach TS with JS context.

Row Types:

Special Indicators:

Adopt TS incrementally via JSDoc or allowJs before full migration.
Rely on type inference; avoid over‑annotating.
Enable strict mode for better correctness.

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TypeScript for JavaScript Devs (Free)

TypeScript – Handbook (Docs) — Authoritative TS learning path
TypeScript – Tutorial — Quick guided intro
TypeScript – Everyday Types — Core types overview
TypeScript – Modules — Organizing code
Microsoft Learn – TypeScript — Free modules for TS
Effective TypeScript Notes (community) — Best practices blog
Type Challenges (TS playground) — Advanced TS exercises
DefinitelyTyped – Types for JS libs — Community types repo
TS Playground – Try TS Online — Interactive editor
Zod – Getting Started — Runtime schema validation
TypeScript Deep Dive (free book) — Comprehensive TS guide