Basic setup for Cpp based screeping.

js/main.js

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+'use strict';
+
+const wasm_loader = require('wasm_loader')
+
+var mod;
+wasm_loader('app_loader', 'app_module').then((instance) => {
+    console.log("WASM module loaded.");
+    mod = instance;
+});
+
+module.exports.loop = function () {
+    if (mod !== undefined)
+        mod.loop();
+}

js/wasm_loader.js

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+'use strict';
+
+module.exports = ((mod_js, mod_wasm, opts) => {
+
+    const mod_file = require(mod_js);
+    const bin_file = require(mod_wasm);
+
+    opts = opts || {};
+
+    opts.wasmBinary = bin_file;
+    opts.print = opts.print || ((text) => console.log(text));
+    opts.printErr = opts.printErr || ((text) => console.log(`error: ${text}`));
+    opts.onAbort = opts.onAbort || (() => console.log('WASM aborted!!!'));
+
+    // == don't call main()
+    if (typeof opts.noInitialRun === "undefined")
+        opts.noInitialRun = true;
+
+    // == don't terminate after returning from main()
+    if (typeof opts.noExitRuntime === "undefined")
+        opts.noExitRuntime = true;
+
+    return mod_file(opts);
+});