Missing Promise for {electron, browserWindow, webContents} types

[andersk]

The spectron TypeScript declarations copy the RemoteMainInterface, BrowserWindow, WebContents types from electron, but this leads to incorrect type errors because spectron changes all the methods on these interfaces return Promises.

For example, given

import electronPath from "electron";
import { Application } from "spectron";

const app = new Application({
  path: electronPath as unknown as string,
  args: ["./app"],
});

app.start().then(() =>
  app.browserWindow.isVisible().then((visible: boolean) => {
    console.log(visible);
    app.stop();
  })
);

TypeScript complains:

test.ts:10:33 - error TS2339: Property 'then' does not exist on type 'boolean'.

10   app.browserWindow.isVisible().then((visible: boolean) => {
                                   ~~~~

Found 1 error.