Add exported identifier to ExportSpecifier for esprima

See estools#271

Author: adamjmcgrath

escodegen.js

@@ -2262,10 +2262,10 @@
         },
 
         ExportSpecifier: function (expr, precedence, flags) {
-            var exported = (expr.id || expr.imported).name;
-            var result = [ exported ];
+            var name = (expr.id || expr.imported || expr.exported).name;
+            var result = [ name ];
             var id = expr.name || expr.local;
-            if (id && id.name !== exported) {
+            if (id && id.name !== name) {
                 result.push(noEmptySpace() + 'as' + noEmptySpace() + generateIdentifier(id));
             }
             return result;

test/compare-esprima2/export-default-declaration.expected.js

@@ -1,2 +1,5 @@
 export default function a() {
 }
+export {
+    foo
+};

test/compare-esprima2/export-default-declaration.expected.min.js

@@ -1 +1 @@
-export default function a(){}
+export default function a(){}export{foo}

test/compare-esprima2/export-default-declaration.js

@@ -1,3 +1,4 @@
 export default function a () { }
+export { foo };
 // export default var i = 20;
 // export default const K = 20;