fix global detection

src/Module.js

@@ -208,7 +208,7 @@ export default class Module {
 		// if names are referenced that are neither defined nor imported
 		// in this module, we assume that they're globals
 		this.statements.forEach( statement => {
-			if ( statement.isExportDeclaration ) return;
+			if ( statement.isReexportDeclaration ) return;
 
 			keys( statement.dependsOn ).forEach( name => {
 				if ( !this.definitions[ name ] && !this.imports[ name ] ) {

src/Statement.js

@@ -164,7 +164,7 @@ export default class Statement {
 
 			const definingScope = scope.findDefiningScope( node.name );
 
-			if ( ( !definingScope || definingScope.depth === 0 ) && !this.defines[ node.name ] ) {
+			if ( !definingScope || definingScope.depth === 0 ) {
 				this.dependsOn[ node.name ] = true;
 				if ( strong ) this.stronglyDependsOn[ node.name ] = true;
 			}