fix corner case in unused (#3674)

fixes #3673
2020-01-07 20:06:25 +08:00
parent 4d6771b9b1
commit f5ceff6e4b
2 changed files with 21 additions and 1 deletions
--- a/lib/compress.js
+++ b/lib/compress.js
@@ -4196,7 +4196,7 @@ merge(Compressor.prototype, {
                if (node instanceof AST_Assign) {
                    if (node.write_only === "p" && node.right.may_throw_on_access(compressor)) return;
                    var right = get_rhs(node);
-                    if (init && node.write_only && node_def.scope === self && !right.has_side_effects(compressor)) {
+                    if (init && node.write_only === true && node_def.scope === self && !right.has_side_effects(compressor)) {
                        initializations.add(node_def.id, right);
                    } else {
                        right.walk(tw);