Function isBuffer

github-actions/browserstack/set-browserstack-env.js:1420–1422

(buffer)

        return ret;
      }
      function isBuffer(buffer) {
        return buffer instanceof Uint8Array || Buffer.isBuffer(buffer);
      }
      function validateHandler(handler, method, upgrade) {
        if (!handler || typeof handler !== "object") {
          throw new InvalidArgumentError("handler must be an object");