669   resourceToFile: {[resource: string]: Set<string>} = {}; // Resource is used by which file  property in ProcessFileInfo
687         this.resourceToFile[element] = new Set(resourceToFileCacheInfo[element]);
736 …const resourceToFile: {[resource: string]: Set<string> | string[]} = Object.assign(resourceToFileC…  constant
741             if (!resourceToFile[resource]) {
742               resourceToFile[resource] = new Set();
744             (resourceToFile[resource] as Set<string>).add(id);
749             (resourceToFile[resource] as Set<string>).delete(id);
757       this.resourceToFile = resourceToFile as {[resource: string]: Set<string>};
758       for (const resource in resourceToFile) {
759         resourceToFile[resource] = [...resourceToFile[resource]];
763       cache.set('resourceToFileCacheInfo', resourceToFile);
780       if (!this.resourceList.has(resource) && this.resourceToFile[resource]) {
781         this.resourceToFile[resource].forEach(file => {
788       if (!this.resourceToFile[resource]) {
789         this.resourceToFile[resource] = new Set();
792         this.resourceToFile[resource].forEach(file => {