[backend] fix: 修复异常处理和类型转换问题

frontend/node_modules/@humanwhocodes/module-importer/src/module-importer.cjs

@@ -60,4 +60,22 @@ exports.ModuleImporter = class ModuleImporter {
      * @param {string} specifier Either an npm package name or
      *      relative file path.
      * @returns {string|undefined} The location of the import.
-     * @throws {Error} If
+     * @throws {Error} If specifier cannot be located.
+     */
+    resolve(specifier) {
+        const require = createRequire(this.cwd);
+        return require.resolve(specifier);
+    }
+
+    /**
+     * Imports a module based on its name or location.
+     * @param {string} specifier Either an npm package name or
+     *      relative file path.
+     * @returns {Promise<object>} The module's object.
+     */
+    import(specifier) {
+        const location = this.resolve(specifier);
+        return import(pathToFileURL(location).href);
+    }
+
+}

frontend/node_modules/@humanwhocodes/module-importer/src/module-importer.js

@@ -0,0 +1,22 @@
+/**
+ * @fileoverview Universal module importer
+ */
+
+//-----------------------------------------------------------------------------
+// Imports
+//-----------------------------------------------------------------------------
+
+import { createRequire } from "module";
+import { fileURLToPath } from "url";
+import { dirname } from "path";
+
+//-----------------------------------------------------------------------------
+// Helpers
+//-----------------------------------------------------------------------------
+
+const __filename = fileURLToPath(import.meta.url);
+const __dirname = dirname(__filename);
+const require = createRequire(__dirname + "/");
+const { ModuleImporter } = require("./module-importer.cjs");
+
+export { ModuleImporter };