Fix a namespace import not causing the default export to be considere…

…d used.

changelog.md

@@ -12,6 +12,7 @@
 
 ### Patch
 
+- Fixed a namespace import not causing the default export to be considered used.
 - Improved the internal module `MODULE_GLOB` tests.
 
 ## 6.0.0

findUnusedExports.mjs

@@ -189,19 +189,13 @@ export default async function findUnusedExports(options = {}) {
         );
 
         if (importedModulePath) {
-          if (moduleImports.has("*")) {
-            // Delete all the named exports from the unused exports set.
-            for (const name of possiblyUnusedExports[importedModulePath])
-              if (name !== "default")
-                possiblyUnusedExports[importedModulePath].delete(name);
-
-            // Check if a default import also needs to be deleted from the unused
-            // exports set.
-            if (moduleImports.has("default"))
-              possiblyUnusedExports[importedModulePath].delete("default");
-          } else
-            for (const name of moduleImports)
-              possiblyUnusedExports[importedModulePath].delete(name);
+          // If a namespace import (`import * as`) imported all exports of the
+          // module, delete every export from the unused exports set. Otherwise,
+          // delete only the imported exports from the unused exports set.
+          for (const name of moduleImports.has("*")
+            ? possiblyUnusedExports[importedModulePath]
+            : moduleImports)
+            possiblyUnusedExports[importedModulePath].delete(name);
 
           // Check if the module still has possibly unused exports.
           if (!possiblyUnusedExports[importedModulePath].size)

findUnusedExports.test.mjs

@@ -80,9 +80,7 @@ describe("Function `findUnusedExports`.", { concurrency: true }, () => {
       ),
     );
 
-    deepStrictEqual(await findUnusedExports({ cwd: fixtureProjectPath }), {
-      [join(fixtureProjectPath, "a.mjs")]: new Set(["default"]),
-    });
+    deepStrictEqual(await findUnusedExports({ cwd: fixtureProjectPath }), {});
   });
 
   it("Bare import specifier.", async () => {