AISstream to make it work)

/**

 * URL used by the API; this might change if the version changes or at any time, since it's experimental

 */

const AIS_API_URL = "wss://stream.aisstream.io/v0/stream";

export const defaultBoundingBox = [

  [

    [-90, -180],

    [90, 180],

  ],

];

let socket = null;

// Creates a deno websocket client and subscribes to the AIS API

export function createSocket(apiKey, boundingBoxes = defaultBoundingBox) {

  if (socket) {

    return socket;

  }

  socket = new WebSocket(AIS_API_URL);

  socket.onopen = () => {

    console.log("Socket connected");

    socket.send(

      JSON.stringify({

        apiKey,

        boundingBoxes,

      })

    );

  };

  socket.onmessage = (event) => {

    const reader = new FileReader();

    console.log(event);

    const decodedBlob = reader.readAsText(event.data);

    console.log(decodedBlob);

  };

  socket.onclose = () => {

    console.log("Socket closed");

  };

  return socket;

}

socket.onmessage = async(event) => {

  const decodedBlob = await event.data.text();

  console.log(decodedBlob);

  const data = JSON.parse(decodedBlob);

};

socket.onmessage = (event) => {

  const reader = new FileReader();

  reader.onload = () => {

    const decodedBlob = reader.result;

    console.log(decodedBlob);

  };

  reader.readAsText(event.data); // does not return the data

};