Getting progress to renderer process... about electron-dl HOT 2 CLOSED

// Handle file downloads on the main thread. Events are emitted from the mainwindow renderer and then handled here.
// Download progress is then passed back as a "downloadProgress" event to the mainWindow renderer.
//
ipcMain.on( "download", async ( event, url, { directory = tempPath } = {} ) => {
  download( mainWindow, url, {
    directory:  directory,
    onProgress: progress => mainWindow.webContents.send( "downloadProgress", progress )
  } );
} );

ipcRenderer.on( "downloadProgress", this._downloadProgress.bind( this ) );

ipcRenderer.send( "download", URL );

_downloadProgress( event, progress ) {
  this.setState( { downloadProgress: progress } );
}