more fixes

src/Bundle.js

@@ -156,10 +156,10 @@ export default class Bundle {
 		const exportMode = getExportMode( this, options.exports );
 
 		// Assign names to external modules
-		this.externalModules.forEach( module => {
-			const override = module.declarations['*'] || module.declarations.default;
-			if ( override ) module.name = override.name;
-		});
+		// this.externalModules.forEach( module => {
+		// 	const override = module.declarations['*'] || module.declarations.default;
+		// 	if ( override ) module.name = override.name;
+		// });
 
 		let magicString = new MagicString.Bundle({ separator: '\n\n' });
 

src/ExternalModule.js

@@ -4,9 +4,7 @@ import makeLegalIdentifier from './utils/makeLegalIdentifier';
 class ExternalDeclaration {
 	constructor ( module, name ) {
 		this.module = module;
-		this.importedAs = name;
-
-		this.name = null;
+		this.name = name;
 		this.isExternal = true;
 
 		this.references = [];
@@ -14,21 +12,24 @@ class ExternalDeclaration {
 
 	addReference ( reference ) {
 		reference.declaration = this;
-		this.name = reference.name;
+
+		if ( this.name === 'default' || this.name === '*' ) {
+			this.module.suggestName( reference.name );
+		}
 	}
 
-	getName () {
-		if ( this.importedAs === '*' ) {
+	getName ( es6 ) {
+		if ( this.name === '*' ) {
 			return this.module.name;
 		}
 
-		if ( this.importedAs === 'default' ) {
+		if ( this.name === 'default' ) {
 			return this.module.needsNamed ?
 				`${this.module.name}__default` :
 				this.module.name;
 		}
 
-		return `${this.module.name}.${this.name}`;
+		return es6 ? this.name : `${this.module.name}.${this.name}`;
 	}
 }
 
@@ -37,6 +38,9 @@ export default class ExternalModule {
 		this.id = id;
 		this.name = makeLegalIdentifier( id );
 
+		this.nameSuggestions = blank();
+		this.mostCommonSuggestion = 0;
+
 		this.isExternal = true;
 		this.declarations = blank();
 
@@ -51,6 +55,16 @@ export default class ExternalModule {
 		this.needsAll = false;
 	}
 
+	suggestName ( name ) {
+		if ( !this.nameSuggestions[ name ] ) this.nameSuggestions[ name ] = 0;
+		this.nameSuggestions[ name ] += 1;
+
+		if ( this.nameSuggestions[ name ] > this.mostCommonSuggestion ) {
+			this.mostCommonSuggestion = this.nameSuggestions[ name ];
+			this.name = name;
+		}
+	}
+
 	traceExport ( name ) {
 		// TODO is this necessary? where is it used?
 		if ( name === 'default' ) {

src/Module.js

@@ -522,8 +522,8 @@ export default class Module {
 
 				if ( reference.declaration ) {
 					const { start } = reference.node;
-					const name = ( !es6 && declaration.isExternal ) ?
-						declaration.getName() :
+					const name = declaration.isExternal ?
+						declaration.getName( es6 ) :
 						declaration.name;
 
 					magicString.overwrite( start, start + reference.name.length, name );
@@ -537,6 +537,11 @@ export default class Module {
 					magicString.remove( statement.node.start, statement.node.declaration.start );
 				}
 
+				else if ( statement.node.type === 'ExportAllDeclaration' ) {
+					// TODO: remove once `export * from 'external'` is supported.
+					magicString.remove( statement.start, statement.next );
+				}
+
 				// remove `export` from `export class Foo {...}` or `export default Foo`
 				// TODO default exports need different treatment
 				else if ( statement.node.declaration.id ) {