fix corner case in collapse_vars (#4634)

fixes #4633
2021-02-10 00:45:36 +00:00
parent 228cdf8e7e
commit 5e6307974f
2 changed files with 31 additions and 1 deletions
--- a/lib/compress.js
+++ b/lib/compress.js
@@ -2009,7 +2009,7 @@ merge(Compressor.prototype, {
                    };
                    var tw = new TreeWalker(function(node) {
                        if (!arg) return true;
-                        if (has_await(node)) {
+                        if (has_await(node) || node instanceof AST_Yield) {
                            arg = null;
                            return true;
                        }