Automatically bundle base64decode function

Author: xirreal

main.js

@@ -1,19 +1,31 @@
 const fs = require("fs");
 
-// TODO: Add the base64 decode function automagically
+const decodeFunc = `
+function _base64ToArrayBuffer(base64) {
+    var binary_string = window.atob(base64);
+    var len = binary_string.length;
+    var bytes = new Uint8Array(len);
+    for (var i = 0; i < len; i++) {
+        bytes[i] = binary_string.charCodeAt(i);
+    }
+    return bytes.buffer;
+}`;
 
 module.exports = function base64wasm() {
     return {
         name: 'base64-wasm-bundler', // this name will show up in warnings and errors
         async transform(code, id) {
-            if(id.endsWith(".wasm")) {
+            if (id.endsWith(".wasm")) {
                 const base64 = fs.readFileSync(id).toString("base64");
                 return {
-                    code: `export default "${base64}"`,
+                    code: `export default () => {
+                        ${decodeFunc}
+                        return _base64ToArrayBuffer("${base64}");
+                    }`,
                     map: { mappings: "" },
                 };
             }
             return null;
-          },
+        }
     };
 }