[Updt] Mtp 0.3.0

packages/mtp/src/requestIds.ts

@@ -0,0 +1,24 @@
+const MAX_MTP_REQUEST_ID = 0xffff_ffff;
+
+export class RequestIdAllocator {
+  #next: number;
+
+  constructor(next = 1) {
+    if (
+      !Number.isSafeInteger(next) ||
+      next <= 0 ||
+      next > MAX_MTP_REQUEST_ID + 1
+    ) {
+      throw new RangeError("invalid MTP request ID allocator state");
+    }
+    this.#next = next;
+  }
+
+  allocate(): number {
+    if (this.#next > MAX_MTP_REQUEST_ID) {
+      throw new Error("MTP request ID space exhausted for this connection");
+    }
+
+    return this.#next++;
+  }
+}