examples/wasm/hello_world_wasm_test.js

"use strict";
const fs = require('fs');
const path = require('path');
const assert = require('assert');

const main = async function (typ) {
  const wasm_file = path.join(__dirname, 'hello_world_'+typ+'_wasm_bindgen_bg.wasm');
  assert.ok(fs.existsSync(wasm_file));

  const buf = fs.readFileSync(wasm_file);
  assert.ok(buf);

  const res = await WebAssembly.instantiate(buf);
  assert.ok(res);
  assert.strictEqual(res.instance.exports.double(2), 4);
};

["bundler", "web", "deno", "nomodules", "nodejs"].forEach((typ) => {
  main(typ).catch(function (err) {
    console.error(err);
    process.exit(1);
  });
})