retrofit try-catch-finally as block-scoped (#4178)

- support optional catch binding
2020-10-04 22:30:14 +01:00
parent f9946767c9
commit 8f0521d51d
8 changed files with 74 additions and 19 deletions
--- a/lib/output.js
+++ b/lib/output.js
@@ -1099,10 +1099,12 @@ function OutputStream(options) {
    DEFPRINT(AST_Catch, function(output) {
        var self = this;
        output.print("catch");
-        output.space();
-        output.with_parens(function() {
-            self.argname.print(output);
-        });
+        if (self.argname) {
+            output.space();
+            output.with_parens(function() {
+                self.argname.print(output);
+            });
+        }
        output.space();
        print_braced(self, output);
    });