fix corner case in ie8 (#4963)

fixes #4962
2021-05-25 17:12:31 +01:00
parent 1e787c556b
commit eff45eac0e
2 changed files with 54 additions and 2 deletions
--- a/lib/compress.js
+++ b/lib/compress.js
@@ -5281,7 +5281,7 @@ merge(Compressor.prototype, {
                    if (member(def.scope, scopes)) return true;
                    if (scope && !def.redefined()) {
                        var scope_def = scope.find_variable(node.name);
-                        if (def.undeclared ? !scope_def : scope_def === def) {
+                        if (scope_def ? scope_def === def : def.undeclared) {
                            result = "f";
                            return true;
                        }
@@ -7637,7 +7637,6 @@ merge(Compressor.prototype, {
                    }).init_vars(node),
                }));
                exprs = [ node ];
-
            }
            if (values) exprs.push(make_node(AST_Call, this, {
                expression: make_node(AST_Arrow, this, {