An experienced JavaScript educator explores whether TypeScript has effectively displaced plain JavaScript in modern development. Citing GitHub's 2025 Octoverse report (TypeScript overtook Python and JavaScript in monthly contributors) and the 2025 State of JS survey (77% of JS/TS coding time spent writing TypeScript), the piece argues TypeScript has become the default across frontend frameworks (React, Vue, Angular), backend (Node.js running TS directly), monorepos, mobile (React Native), desktop (Electron), and the AI application layer (Vercel AI SDK). It concludes JavaScript isn't dead - TypeScript compiles down to it - but recommends beginners still learn JavaScript fundamentals before moving to TypeScript, and that plain JS remains fine for small scripts and teaching. The video is sponsored by CodeRabbit and promotes the creator's own start.dev TypeScript course.
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