fix corner cases in properties (#5178)

fixes #5177
2021-11-16 20:21:44 +00:00
parent 77f7ae5ba2
commit ae5c3ee8a1
6 changed files with 172 additions and 25 deletions
--- a/lib/output.js
+++ b/lib/output.js
@@ -1152,8 +1152,9 @@ function OutputStream(options) {
        });
    }
    function print_arrow(self, output) {
-        if (self.argnames.length == 1 && self.argnames[0] instanceof AST_SymbolFunarg && !self.rest) {
-            self.argnames[0].print(output);
+        var argname = self.argnames.length == 1 && !self.rest && self.argnames[0];
+        if (argname instanceof AST_SymbolFunarg && argname.name != "yield") {
+            argname.print(output);
        } else {
            print_funargs(self, output);
        }