WebAssembly

The WebAssembly (WASM) is available in JSAR, which allows developers to write high-performance code in C/C++ and Rust for the application development.

Using WebAssembly in JSAR

JSAR's ECMAScript modules are more friendly to WebAssembly, you can import the WebAssembly module directly in your code.

Assuming you have a WebAssembly module add.wasm:

int add(int a, int b) {
  return a + b;
}

You can compile the add.c to add.wasm with the following command:

emcc add.c -o add.wasm

Then you can import the add.wasm in your JavaScript code:

import code from './add.wasm';

const wasmModule = new WebAssembly.Module(code);
const wasmInstance = new WebAssembly.Instance(wasmModule);
console.log(wasmInstance.exports.add(1, 2)); // 3

Or you can use the streaming compilation:

const { instance, module } = await WebAssembly.instantiateStreaming(import('./add.wasm'));
console.log(instance.exports.add(1, 2)); // 3

References

• WebAssembly
• Emscripten