Run TypeScript on Android — On-Device, Offline After a One-Time Download

TypeScript is JavaScript with a type system — and that type system usually lives in a desktop toolchain. PocketCode brings it to your phone with an optional TypeScript pack: download it once, and your .ts files type-check and run on the device, offline.

Add the pack once, then run offline

TypeScript comes as a language pack you install a single time. From then on: open a .ts file, tap Run, and it's compiled and executed locally.

• The typed language you write — interfaces, generics, unions, type aliases — is checked on-device before it runs.
• Compiler diagnostics surface type errors just like a desktop setup.
• Once installed, it runs with no connection, and nothing leaves the device.

Because it pairs so naturally with plain JavaScript, it slots right in next to the bundled Node.js runtime.

What it's great for

• Learning TypeScript — practice the type system anywhere.
• Scripting with types — small typed utilities and data transforms.
• Testing type-level ideas — try a generic or a conditional type and see it compile.

The editor adds LSP-backed autocomplete and inline diagnostics tuned for TypeScript.

The honest limits

• A one-time download. Unlike the bundled five, TypeScript needs its pack first; after that it's fully offline.
• For learning and scripts. Ideal for exercises and small typed programs — not a full framework build pulling packages from a registry.
• Phone-scale. Great for snippets and utilities; large projects belong on a desktop.

Within those lines, it's real TypeScript, checked and run on your phone.

Part of the lineup

TypeScript is one of a dozen-plus languages PocketCode runs on-device — five bundled offline (Python, JavaScript, C, Ruby, PHP) plus packs like this one. See the full lineup.

---

Add the pack once and your phone runs TypeScript, offline.

PocketCode is heading to Google Play. Join the pre-registration to try it on your own device.