fix corner case in collapse_vars (#4217)

fixes #4216
2020-10-14 00:18:26 +01:00
parent b7b8435721
commit 9f8106e1d8
3 changed files with 25 additions and 4 deletions
--- a/lib/compress.js
+++ b/lib/compress.js
@@ -1501,9 +1501,9 @@ merge(Compressor.prototype, {
                // Skip (non-executed) functions
                if (node instanceof AST_Scope) return node;
                // Stop upon collision with block-scoped variables
-                if (node.variables && !node.variables.all(function(def) {
+                if (!(node.variables && node.variables.all(function(def) {
                    return !lvalues.has(def.name);
-                })) {
+                }))) {
                    abort = true;
                    return node;
                }