fix corner case in dead_code (#3831)

fixes #3830
2020-04-30 14:52:57 +01:00
parent 39f849590b
commit d900006973
2 changed files with 203 additions and 0 deletions
--- a/lib/compress.js
+++ b/lib/compress.js
@@ -7532,6 +7532,7 @@ merge(Compressor.prototype, {
                    node = parent;
                    parent = compressor.parent(level++);
                    if (parent instanceof AST_Assign) {
+                        if (parent.left instanceof AST_PropAccess) break;
                        if (!(parent.left instanceof AST_SymbolRef)) continue;
                        if (parent.left.definition() !== def) continue;
                        if (in_try(level, parent)) break;