Function decode

examples/basic-websocket-client/src/index.js:232–248

(data)

}

function decode(data) {
  let i = 1; // skip "4" prefix

  const packet = {
    type: parseInt(data.charAt(i++), 10),
  };

  if (data.charAt(i)) {
    packet.data = JSON.parse(data.substring(i));
  }

  if (!isPacketValid(packet)) {
    throw new Error("invalid format");
  }

  return packet;
}

function isPacketValid(packet) {
  switch (packet.type) {