| import { Alert } from '../json'; | |
| /** | |
| * validate returns the empty string if the Alert is valid, otherwise it | |
| * returns a message explaining why the Alert is invalid. | |
| */ | |
| export function validate(alert: Alert): string { | |
| if (!alert.query) { | |
| return 'An alert must have a non-empty query.'; | |
| } | |
| return ''; | |
| } |