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WebAssembly with TypeScript

note
  • TypeScript is a superset of JavaScript. Therefore, the best approach to using TypeScript with WebAssembly is to transpile it into JavaScript.
  • WebAssembly support for JavaScript is good thanks to Javy.
  • Javy compiles QuickJS, a tiny JavaScript runtime, to Wasm along with the script to be executed.
  • JavaScript is the second most popular and desirable language to work with WebAssembly.

Install TypeScript compiler​

If you have npm, you can install TypeScript globally:

npm install -g typescript

TypeScript code​

Create a file named index.ts:

function fibonacci(num: number) {
    var a: number = 1;
    var b: number = 0;
    var temp: number;
    while (num >= 0) {
        temp = a;
        a = a + b;
        b = temp;
        num--;
    }
    console.log("Fibonacci Term is:", b);
}
tip

Access the TypeScript codex repository for code samples, including the fibonacci example.

Transpiling TypeScript to JavaScript​

tsc index.ts

Follow the instructions at WebAssembly with JavaScript to compile JavaScript to WebAssembly and run it with Enarx.