fix: fix skipUnlistedExtensions option issue.

Author: jaywcjlove

src/index.js

@@ -38,7 +38,11 @@ const skipModule = (module, { replace, extension, skipUnlistedExtensions, observ
   const moduleExtension = extname(module).toLowerCase();
   const moduleExtensionWithoutDot = moduleExtension.replace(/^\./, '');
   // If the module's extension is not in the list of observed script extensions, skip it
-  if (skipUnlistedExtensions == true && !observedScriptExtensions.includes(moduleExtensionWithoutDot)) {
+  if (
+    skipUnlistedExtensions == true 
+    && moduleExtension != ""
+    && !observedScriptExtensions.includes(moduleExtensionWithoutDot)
+  ) {
     return true;
   }
 

test/cases/skipUnlistedExtensions/input.js

@@ -1 +1,5 @@
-import png from './logo.png';
+import png from './logo.png';
+import * as Something from './lib/something';
+import * as SomethingTest from './lib/something.test';
+export { something as another } from './lib/something';
+import { export1 , export2 as alias2 } from './lib/something/';

test/cases/skipUnlistedExtensions/output.js

@@ -1 +1,5 @@
-import png from './logo.png';
+import png from './logo.png';
+import * as Something from "./lib/something.js";
+import * as SomethingTest from './lib/something.test';
+export { something as another } from "./lib/something.js";
+import { export1, export2 as alias2 } from "./lib/something/index.js";