mark computed properties in for..of initializers as used. Closes #1238

terser · Dec 2, 2022 · d941a11 · d941a11
1 parent 635400e
commit d941a11
Showing 1 changed file with 8 additions and 9 deletions.
diff --git a/lib/compress/drop-unused.js b/lib/compress/drop-unused.js
@@ -199,15 +199,14 @@ AST_Scope.DEFMETHOD("drop_unused", function(compressor) {
                         }
                     });
                 }
-                if (def.value) {
-                    if (def.name instanceof AST_Destructuring) {
-                        def.walk(tw);
-                    } else {
-                        var node_def = def.name.definition();
-                        map_add(initializations, node_def.id, def.value);
-                        if (!node_def.chained && def.name.fixed_value() === def.value) {
-                            fixed_ids.set(node_def.id, def);
-                        }
+                if (def.name instanceof AST_Destructuring) {
+                    def.walk(tw);
+                }
+                if (def.name instanceof AST_SymbolDeclaration && def.value) {
+                    var node_def = def.name.definition();
+                    map_add(initializations, node_def.id, def.value);
+                    if (!node_def.chained && def.name.fixed_value() === def.value) {
+                        fixed_ids.set(node_def.id, def);
                     }
                     if (def.value.has_side_effects(compressor)) {
                         def.value.walk(tw);