fix(): pass this context to injectPlugin

Author: manucorporat

src/index.ts

@@ -9,18 +9,17 @@ export default function (opts: NodePolyfillsOptions = {}) {
     include: opts.include,
     exclude: opts.exclude,
     modules: {
-    'process': 'process',
-    'Buffer': ['buffer', 'Buffer'],
-    'global': GLOBAL_PATH,
-    '__filename': FILENAME_PATH,
-    '__dirname': DIRNAME_PATH,
+      'process': 'process',
+      'Buffer': ['buffer', 'Buffer'],
+      'global': GLOBAL_PATH,
+      '__filename': FILENAME_PATH,
+      '__dirname': DIRNAME_PATH,
     }
   });
   const basedir = opts.baseDir || '/';
   const dirs = new Map<string, string>();
   const resolver = builtinsResolver(opts);
   return {
-    ...injectPlugin,
     name: 'node-polyfills',
     resolveId(importee: string, importer: string) {
       if (importee === DIRNAME_PATH) {
@@ -39,6 +38,9 @@ export default function (opts: NodePolyfillsOptions = {}) {
       if (dirs.has(id)) {
         return `export default '${dirs.get(id)}'`;
       }
+    },
+    transform(code: string, id: string)  {
+      return injectPlugin.transform.call(this, code, id);
     }
   };
 }