etsdk-js/dist/index.mjs

Client-side to Tobii Pro SDK

// src/TobiiClient.ts
import WebSocket from "isomorphic-ws";
import jsLogger from "js-logger";

// src/utils.ts
function waitForSocketState(socket, state) {
  return new Promise(function(resolve) {
    setTimeout(function() {
      if (socket.readyState === state) {
        resolve(true);
      } else if (socket.readyState === socket.CLOSED && state === socket.OPEN) {
        resolve(false);
      } else {
        waitForSocketState(socket, state).then(resolve);
      }
    });
  });
}

// src/TobiiClient.ts
jsLogger.useDefaults();
var tobiiLogger = jsLogger.get("tobiiprosdk");
var TobiiClient = class {
  port;
  host = "http://localhost";
  wsHost = "ws://localhost";
  _activeWSConnections = {};
  constructor(port = 9999, host = "http://localhost", wsHost = "ws://localhost") {
    this.port = port;
    this.host = host;
    this.wsHost = wsHost;
  }
  async ping() {
    const response = await fetch(`${this.host}:${this.port}/api/ping`);
    const data = await response.json();
    return data;
  }
  async getEyeTrackers() {
    const response = await fetch(`${this.host}:${this.port}/api/find`);
    const data = await response.json();
    return data;
  }
  async connectToEyeTracker(serial_number) {
    const ws = await this._createWebSocketConnection(serial_number);
    this._activeWSConnections[serial_number] = ws;
    return ws;
  }
  async disconnectFromEyeTracker(serial_number) {
    const ws = this._activeWSConnections[serial_number];
    if (ws) {
      ws.close();
      delete this._activeWSConnections[serial_number];
    }
  }
  async clearAllActiveConnections() {
    for (const serial_number in this._activeWSConnections) {
      this.disconnectFromEyeTracker(serial_number);
    }
  }
  async _createWebSocketConnection(url_params) {
    const ws = new WebSocket(`${this.wsHost}:${this.port}/ws/${url_params}`);
    await waitForSocketState(ws, ws.OPEN);
    return ws;
  }
};
export {
  TobiiClient
};
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