electron/lib/renderer/api/ipc-renderer.js

'use strict';

const { ipc } = process.electronBinding('ipc');
const v8Util = process.electronBinding('v8_util');

// Created by init.js.
const ipcRenderer = v8Util.getHiddenValue(global, 'ipc');
const internal = false;

if (!ipcRenderer.send) {
  ipcRenderer.send = function (channel, ...args) {
    return ipc.send(internal, channel, args);
  };

  ipcRenderer.sendSync = function (channel, ...args) {
    const result = ipc.sendSync(internal, channel, args);
    if (!Array.isArray(result) || result.length !== 1) {
      throw new Error(`Unexpected return value from ipcRenderer.sendSync: ${result}`);
    }
    return result[0];
  };

  ipcRenderer.sendToHost = function (channel, ...args) {
    return ipc.sendToHost(channel, args);
  };

  ipcRenderer.sendTo = function (webContentsId, channel, ...args) {
    return ipc.sendTo(internal, false, webContentsId, channel, args);
  };

  ipcRenderer.sendToAll = function (webContentsId, channel, ...args) {
    return ipc.sendTo(internal, true, webContentsId, channel, args);
  };

  ipcRenderer.invoke = function (channel, ...args) {
    return ipc.invoke(channel, args).then(({ error, result }) => {
      if (error) { throw new Error(`Error invoking remote method '${channel}': ${error}`); }
      return result;
    });
  };
}

module.exports = ipcRenderer;