From e5c4ae0fe09e72c1ebfa75665dc24aeb8543690a Mon Sep 17 00:00:00 2001
From: kzc <zaxxon2011@gmail.com>
Date: Sun, 17 Dec 2017 01:38:58 -0500
Subject: [PATCH] workaround for `compress` of `export default` anonymous
 functions

---
 lib/compress.js | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/lib/compress.js b/lib/compress.js
index 4065c543..e3bfa938 100644
--- a/lib/compress.js
+++ b/lib/compress.js
@@ -409,6 +409,7 @@ merge(Compressor.prototype, {
                     }
                 }
                 if (node instanceof AST_DefClass || node instanceof AST_Defun) {
+                    if (!node.name) return;
                     node.inlined = false;
                     var d = node.name.definition();
                     if (compressor.exposed(d) || safe_to_read(d)) {
@@ -2581,6 +2582,7 @@ merge(Compressor.prototype, {
             if (node instanceof AST_Defun || node instanceof AST_DefClass) {
                 var in_export = tw.parent() instanceof AST_Export;
                 if (in_export || !drop_funcs && scope === self) {
+                    if (!node.name) return;
                     var node_def = node.name.definition();
                     if (node_def.global && !(node_def.id in in_use_ids)) {
                         in_use_ids[node_def.id] = true;
@@ -2666,6 +2668,7 @@ merge(Compressor.prototype, {
                 if (node.name
                     && (!compressor.option("keep_classnames") && node instanceof AST_ClassExpression
                         || !compressor.option("keep_fnames") && node instanceof AST_Function)) {
+                    if (!node.name) return;
                     var def = node.name.definition();
                     // any declarations with same name will overshadow
                     // name of this anonymous function and can therefore
@@ -2701,6 +2704,7 @@ merge(Compressor.prototype, {
                     }
                 }
                 if ((node instanceof AST_Defun || node instanceof AST_DefClass) && node !== self) {
+                    if (!node.name) return;
                     var def = node.name.definition();
                     var keep = (def.id in in_use_ids) || !drop_funcs && def.global;
                     if (!keep) {