RenaiApp/src/main/modules/session/session.ts

import { session } from 'electron';
import { ISession } from './i-session';
import { injectable } from 'inversify';
import OnHeadersReceivedDetails = Electron.OnHeadersReceivedDetails;

@injectable()
export class Session implements ISession {
  public setHeaders(): void {
    // these headers only work on web requests, file:// protocol is handled via meta tags in the html
    session.defaultSession.webRequest.onHeadersReceived(
      (details: OnHeadersReceivedDetails, callback: (response: {}) => void) => {
        callback({
          responseHeaders: {
            ...details.responseHeaders,
            'Content-Security-Policy': ["default-src 'none'"],
          },
        });
      }
    );
  }
}