@trezor/transport/lib/sessions/background-browser.js

Low level library facilitating protocol buffers based communication with Trezor devices

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.BrowserSessionsBackground = void 0;
class BrowserSessionsBackground {
  background;
  constructor(sessionsBackgroundUrl) {
    this.background = new SharedWorker(sessionsBackgroundUrl, {
      name: '@trezor/connect-web transport sessions worker'
    });
  }
  handleMessage(params) {
    const {
      background
    } = this;
    return new Promise(resolve => {
      const onmessage = message => {
        if (params.id === message.data.id) {
          resolve(message.data);
          background.port.removeEventListener('message', onmessage);
        }
      };
      background.port.addEventListener('message', onmessage);
      background.port.onmessageerror = message => {
        console.error('background-browser onmessageerror,', message);
        background.port.removeEventListener('message', onmessage);
      };
      background.port.postMessage(params);
    });
  }
  on(event, listener) {
    this.background.port.addEventListener('message', e => {
      if (e && 'type' in e.data) {
        if (e.data.type === event) {
          listener(e.data.payload);
        }
      }
    });
  }
  dispose() {}
}
exports.BrowserSessionsBackground = BrowserSessionsBackground;
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