export default async function installExtensions ( ) { const installer = require ( 'electron-devtools-installer' ) ; const forceDownload = ! ! process . env . UPGRADE_EXTENSIONS ; const extensions = [ 'REACT_DEVELOPER_TOOLS' , 'REDUX_DEVTOOLS' ] ; return Promise . all ( extensions . map ( ( name ) => installer . default ( installer [ name ] , forceDownload ) ) ) . catch ( console . log ) ; }