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test/cdp.mjs

@@ -89,14 +89,25 @@ class CdpConnection {
   send(method, params = {}, timeoutMs = 30000) {
     const callId = ++this.id;
     return new Promise((resolve, reject) => {
-      this.pending.set(callId, { resolve, reject });
-      this.sendFrame(0x1, Buffer.from(JSON.stringify({ id: callId, method, params })));
-      setTimeout(() => {
+      const timer = setTimeout(() => {
         if (this.pending.has(callId)) {
           this.pending.delete(callId);
           reject(new Error(`CDP timeout: ${method}`));
         }
       }, timeoutMs);
+      // Don't let a settled call's timer hold the process open.
+      timer.unref?.();
+      this.pending.set(callId, {
+        resolve: (v) => {
+          clearTimeout(timer);
+          resolve(v);
+        },
+        reject: (e) => {
+          clearTimeout(timer);
+          reject(e);
+        },
+      });
+      this.sendFrame(0x1, Buffer.from(JSON.stringify({ id: callId, method, params })));
     });
   }