Practice Ground

TypeScript Console Lab

Write TypeScript, transpile it through the local Next.js API route, and run the generated JavaScript with console output captured in the page.

Tab inserts spacesShift + Tab outdentsCtrl/Command + Enter runsAlt + Down duplicates lineCtrl/Command + L clears console
TypeScript FeedbackReady

TypeScript feedback appears here after you run code.

TypeScript Editor

Code input

Write, run, copy, indent, outdent, and duplicate lines without leaving the keyboard.

TypeScript
Runtime Output

Console log view

Output is captured per run and can be copied separately from the editor.

Console output will appear here.
Saved Snippets

TypeScript snippets

Save small practice examples locally in this browser, then load them back into the editor when you need another pass.

No saved snippets yet.

Save the current editor when you want to revisit this example later.