Setup and tooling

Last reviewed May 28, 2026 Content v20260528

Track mode

client_typescript

Means

In-browser TS

Reading

~1 min

Level

beginner

This lesson

This lesson teaches Setup and tooling—the ideas, syntax, and habits you need before moving on in TypeScript.

Without a solid grasp of Setup and tooling, you will repeat mistakes in TypeScript exercises and on real pages or scripts.

You will apply Setup and tooling in contexts like: Modern front-end apps, Node APIs, and any team that standardizes on TS-first tooling.

Write TypeScript, compile in the browser, run the emitted JavaScript, and check understanding with MCQs.

Early in the track—complete this before layout, scripting, or architecture lessons that assume these basics.

Real projects use the TypeScript compiler (tsc) or bundlers (Vite, esbuild, webpack) that transpile TS on save or build.

Essential files

VS Code and Cursor use the TypeScript language service for red squiggles, quick fixes, and “Go to type definition.”

The lesson playground compiles with esbuild in the browser—no local install required to practice.

Practice: Apply setup-and-tooling in the playground, then explain setup and tooling in one sentence without looking at notes.

Playground

Runs in your browser in a sandboxed frame. Backend runners appear when this track’s profile allows them.

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