},

});

});

it("guards against post-settled messages by dropping them", async () => {

// Emit two valid id=1 responses — the second must be dropped via the

// `if (settled) return;` guard at the top of onMessage.

await withMockChromeCdpServer({

wsPath: "/devtools/browser/SETTLED",

onConnection: (wss) => {

wss.on("connection", (ws) => {

ws.on("message", (raw) => {

const text = rawDataToString(raw);

const msg = JSON.parse(text) as { id?: number };

if (msg.id === 1) {

ws.send(JSON.stringify({ id: 1, result: { product: "Chrome" } }));

// Second message after settled — the onMessage guard

// should return early.

setTimeout(

() => ws.send(JSON.stringify({ id: 1, result: { product: "after" } })),

20,

);

}

});

});

},

run: async (baseUrl) => {

await expect(isChromeCdpReady(baseUrl, 50, 10)).resolves.toBe(true);

},

});

});

});

describe("isChromeCdpReady swallowed errors", () => {