fix corner case with collapse_vars & ie8 (#3469)

fixes #3468
2019-10-14 13:34:35 +08:00
parent e8ab0a44b2
commit a39bdb5840
3 changed files with 47 additions and 2 deletions
--- a/lib/compress.js
+++ b/lib/compress.js
@@ -896,8 +896,7 @@ merge(Compressor.prototype, {
        if (lhs instanceof AST_This) return true;
        if (lhs instanceof AST_SymbolRef) {
            var def = lhs.definition();
-            return def.orig[0] instanceof AST_SymbolLambda
-                || compressor.exposed(def) && identifier_atom[def.name];
+            return def.lambda || compressor.exposed(def) && identifier_atom[def.name];
        }
        if (lhs instanceof AST_PropAccess) {
            lhs = lhs.expression;