fix AST_PropAccess in collapse_vars (#2370)

fixes #2364
2017-10-17 18:33:03 +08:00
parent fe647b083e
commit f2b9c11e2a
2 changed files with 63 additions and 2 deletions
--- a/lib/compress.js
+++ b/lib/compress.js
@@ -838,7 +838,9 @@ merge(Compressor.prototype, {
                        var sym;
                        if (node instanceof AST_Call
                            || node instanceof AST_Exit
-                            || node instanceof AST_PropAccess && node.has_side_effects(compressor)
+                            || node instanceof AST_PropAccess
+                                && (node.has_side_effects(compressor)
+                                    || get_symbol(node).name in lvalues)
                            || node instanceof AST_SymbolRef
                               && (lvalues[node.name]
                                   || side_effects && !references_in_scope(node.definition()))