LibJS: Stop parsing an expression on comma after a yield

1 files changed, 6 insertions, 0 deletions

diff --git a/Userland/Libraries/LibJS/Tests/syntax/generators.js b/Userland/Libraries/LibJS/Tests/syntax/generators.js
index 99e0968c4b..c70bc6cf72 100644
--- a/Userland/Libraries/LibJS/Tests/syntax/generators.js
+++ b/Userland/Libraries/LibJS/Tests/syntax/generators.js
@@ -12,6 +12,12 @@ describe("parsing freestanding generators", () => {
         expect(`function foo() { yield; }`).toEval();
         expect(`function foo() { yield 3; }`).not.toEval();
     });
+
+    test("yield expression only gets the first expression", () => {
+        expect("function* foo() { yield 2,3 }").toEval();
+        expect("function* foo() { ({...yield yield, }) }").toEval();
+    });
+
     test("yield-from expression", () => {
         expect(`function* foo() { yield *bar; }`).toEval();
         expect(`function* foo() { yield *(yield); }`).toEval();