import { IYesNoCount } from './models'; export class Projection { store: Record = {}; getProjection(): Record { return this.store; } add(name: string, countObj: IYesNoCount): void { if (this.store[name]) { this.store[name].yes += countObj.yes; this.store[name].no += countObj.no; } else { this.store[name] = { yes: countObj.yes, no: countObj.no, }; } } substract(name: string, countObj: IYesNoCount): void { if (this.store[name]) { this.store[name].yes -= countObj.yes; this.store[name].no -= countObj.no; } else { this.store[name] = { yes: 0, no: 0, }; } } }