fix corner case in unused (#4147)

fixes #4146
2020-09-22 13:08:45 +01:00
parent 6d4c0fa6fa
commit 3472cf1a90
3 changed files with 32 additions and 6 deletions
--- a/lib/compress.js
+++ b/lib/compress.js
@@ -6474,17 +6474,16 @@ merge(Compressor.prototype, {
                    side_effects.push(node);
                    args[pos++] = make_sequence(call, side_effects);
                    side_effects = [];
-                } else if (!trim && fn.argnames[i].__unused) {
+                } else if (!trim) {
                    if (side_effects.length) {
-                        node = make_sequence(call, side_effects);
+                        args[pos++] = make_sequence(call, side_effects);
                        side_effects = [];
                    } else {
-                        node = make_node(AST_Number, args[i], {
+                        args[pos++] = make_node(AST_Number, args[i], {
                            value: 0
                        });
+                        continue;
                    }
-                    args[pos++] = node;
-                    continue;
                }
            } else {
                side_effects.push(args[i]);