function f() { const appEntities = getAppEntities(loadObject).filter( entity => entity && entity.isInstallAvailable() && !entity.isQueue() && entity.isDisabled() ) } function f2() { const appEntities = getAppEntities(loadObject).map( entity => entity && entity.isInstallAvailable() && !entity.isQueue() && entity.isDisabled() && { id: entity.id } ) } ((x) => x) + ''; '' + ((x) => x);