const statusMap = { 1: 'ok', 2: 'error', 3: 'acknowledged', }; export class EdgeStackStatusController { $onChanges({ stackStatus }) { if (!stackStatus || !stackStatus.currentValue) { return; } const aggregateStatus = { ok: 0, error: 0, acknowledged: 0 }; for (let endpointId in stackStatus.currentValue) { const endpoint = stackStatus.currentValue[endpointId]; const endpointStatusKey = statusMap[endpoint.Type]; aggregateStatus[endpointStatusKey]++; } this.status = aggregateStatus; } }