nodejs · nodejs-github-bot · Aug 14, 2025 · Aug 12, 2025 · Aug 12, 2025
diff --git a/lib/internal/modules/esm/loader.js b/lib/internal/modules/esm/loader.js
@@ -537,7 +537,7 @@ class ModuleLoader {
   *   matching translators.
   * @param {ModuleSource} source Source of the module to be translated.
   * @param {boolean} isMain Whether the module to be translated is the entry point.
-   * @returns {ModuleWrap | Promise<ModuleWrap>}
+   * @returns {ModuleWrap}
   */
  #translate(url, format, source, isMain) {
    this.validateLoadResult(url, format);
@@ -547,7 +547,9 @@ class ModuleLoader {
      throw new ERR_UNKNOWN_MODULE_FORMAT(format, url);
    }

-    return FunctionPrototypeCall(translator, this, url, source, isMain);
+    const result = FunctionPrototypeCall(translator, this, url, source, isMain);
+    assert(result instanceof ModuleWrap);
+    return result;
  }

  /**

diff --git a/lib/internal/modules/esm/translators.js b/lib/internal/modules/esm/translators.js
@@ -494,18 +494,14 @@ translators.set('json', function jsonStrategy(url, source) {
 * >} [[Instance]] slot proxy for WebAssembly Module Record
 */
 const wasmInstances = new SafeWeakMap();
-translators.set('wasm', async function(url, source) {
+translators.set('wasm', function(url, source) {
  assertBufferSource(source, false, 'load');

  debug(`Translating WASMModule ${url}`);

  let compiled;
  try {
-    // TODO(joyeecheung): implement a translator that just uses
-    // compiled = new WebAssembly.Module(source) to compile it
-    // synchronously.
-    compiled = await WebAssembly.compile(source, {
-      // The ESM Integration auto-enables Wasm JS builtins by default when available.
+    compiled = new WebAssembly.Module(source, {
      builtins: ['js-string'],
    });
  } catch (err) {