Loading WASM in NodeJS

index.js

const fs = require("fs");

async function loadWASM(pathToWasm) {
  /**
   * A helper function to load Wasm.
   */
  try {
    const buf = fs.readFileSync(pathToWasm);
    const { instance } = await WebAssembly.instantiate(new Uint8Array(buf));
    return instance;
  } catch (error) {
    console.error("Error in loading Wasm ", error);
  }
}

(async () => {
  const instance = await loadWASM("./factorial.wasm");
  if (instance) {
    console.log("instance :", instance.exports);
    for (var i = 1; i <= 10; i++) {
      console.log(
        "The factorial of " + i + " = " + instance.exports._Z4facti(i)
      );
    }
  }
})();