import{Pipe,PipeTransform}from'@angular/core';// import {ElectronUtil} from '../util/ElectronUtil';declareconstAPP_PATH;// const isInElectron = localStorage.getItem('electron');@Pipe({name:'backgroundImage'})exportclassBackgroundImagePipeimplementsPipeTransform{transform(value:any,coursewareSid?:string){// const ret = value ? `url(${value})` : '';constret=value?`url(${value})`:'';returnret;// let ret = value > 0 ? `url(/api/media-resource/${value}/file)` : '';// if (isInElectron && ElectronUtil.hasCached(coursewareSid, value)) {// ret = `url(file://${APP_PATH}/courseware_cache/${coursewareSid}/${value})`;// }// return ret;}}