alxgrk / kotlin-nodejs-wasm-example

Playground for playing around with K/Wasm on Node.js

kotlin-nodejs-wasm-example

Playground for playing around with K/Wasm on Node.js

Inspired by https://github.com/linux-china/kotlin-wasm-node-demo & https://github.com/kowasm/kowasm.

Contents

• Node.js App instantiating WasmInstances to run Kotlin/Wasm code
• there are endpoints for both, JS & Wasm implementation of certain CPU intensive tasks, which are:
  • Counting to a specific number: /countToJs?i={number}, /countToWasm?i={number} & /countToWasmOnWorker?i={number} (uses piscina worker_thread pool)
  • Fibonacci: /fibonacciJs?i={number} & /fibonacciWasm?i={number}
  • PrimeFactorization: /primeFactorizationJs?i={number} & /primeFactorizationWasm?i={number}
    • includes custom logic for passing number arrays from Wasm to JS utilizing ScopedMemoryAllocator, see also memoryUtils.kt
  • WASI println: /printToStdout?i={any}
    • utilizes hacky WASI fd_write support to print the incoming value to stdout