JavaScript on tiny, wearable hardware
summary
Claims that full ECMAScript 5.1 runs on a Pebble by porting JerryScript into a 64 KB app environment and shipping the Tic Toc watch face as proof. Uses Emscripten to cross-compile the JerryScript compiler so bytecode is produced in JavaScript on the phone, stores only bytecode on-watch, and leverages canvas-like web APIs plus TypeScript definitions in the SDK. Adds a memory-pressure event that can drop resources and a phone-hosted REPL and cloud build pipeline — it actually deploys and works.
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chapters (10)
- 0:00Introduction to Pebble
- 1:09The Pebble platform
- 3:05Hardware limitations
- 6:33Choosing a JS engine
- 9:41Shipping JavaScript
- 10:45Developing Pebble APIs
- 16:57Memory management
- 21:09Tooling and emulator
- 26:10Debugging and REPL
- 28:40Live demo and future
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