diff --git a/lib/import-to-globals.js b/lib/import-to-globals.js
index dae4f1b..f58a6f5 100644
--- a/lib/import-to-globals.js
+++ b/lib/import-to-globals.js
@@ -11,10 +11,9 @@ async function prepare() {
 
 function analyzeImport(node, importBindings, code, getName, globals) {
   const name = node.source.value && getName(node.source.value);
-  if (!name) {
+  if (name === undefined) {
     return false;
   }
-  globals.add(name);
   for (const spec of node.specifiers) {
     importBindings.set(spec.local.name, makeGlobalName(
       spec.imported ? spec.imported.name : "default",
@@ -22,6 +21,7 @@ function analyzeImport(node, importBindings, code, getName, globals) {
     ));
   }
   code.remove(node.start, node.end);
+  if(name!=='')globals.add(name);
   return true;
 }
 
@@ -29,6 +29,9 @@ function makeGlobalName(prop, name) {
   if (prop === "default") {
     return name;
   }
+  if(name===''){
+    return prop;
+  }
   return `${name}.${prop}`;
 }