refactor: lint cleanups and helpers

src/infra/ws.ts

@@ -0,0 +1,13 @@
+import { Buffer } from "node:buffer";
+
+import type WebSocket from "ws";
+
+export function rawDataToString(
+  data: WebSocket.RawData,
+  encoding: BufferEncoding = "utf8",
+): string {
+  if (typeof data === "string") return data;
+  if (Buffer.isBuffer(data)) return data.toString(encoding);
+  if (Array.isArray(data)) return Buffer.concat(data).toString(encoding);
+  return Buffer.from(data as ArrayBuffer | ArrayBufferView).toString(encoding);
+}