src/vs/workbench/contrib/extensions/browser/fileBasedRecommendations.ts/FileBasedRecommendations/getCachedRecommendations
class FileBasedRecommendations:	private getCachedRecommendations(): IStringDictionary<number> {
		let storedRecommendations = JSON.parse(this.storageService.get(recommendationsStorageKey, StorageScope.GLOBAL, '[]'));
		if (Array.isArray(storedRecommendations)) {
			storedRecommendations = storedRecommendations.reduce((result, id) => { result[id] = Date.now(); return result; }, <IStringDictionary<number>>{});
		}
		const result: IStringDictionary<number> = {};
		forEach(storedRecommendations, ({ key, value }) => {
			if (typeof value === 'number') {
				result[key.toLowerCase()] = value;
			}
		});
		return result;
	}