//#region src/helpers/support-sla.d.ts
type SupportSlaConfig = {
  enabled: boolean;
  firstResponseMinutes: number | null;
  nextResponseMinutes: number | null;
};
declare const DEFAULT_SUPPORT_SLA: SupportSlaConfig;
/**
 * Returns the target first-response due timestamp for a new conversation,
 * or `null` if SLA tracking is off or no target is set.
 */
declare function computeFirstResponseDueAt(now: Date, sla: SupportSlaConfig): Date | null;
/**
 * Returns the target next-response due timestamp when a conversation has been
 * re-opened by a user reply, or `null` if SLA tracking is off or no target
 * is set.
 */
declare function computeNextResponseDueAt(now: Date, sla: SupportSlaConfig): Date | null;
type SlaUrgency = "ok" | "warning" | "urgent" | "overdue";
/**
 * How soon (in milliseconds) before a due timestamp we switch into the
 * "urgent" state. Within this window the due timestamp should be rendered
 * with a strong alert treatment.
 */
declare const SLA_URGENT_THRESHOLD_MS: number;
/**
 * How soon (in milliseconds) before a due timestamp we switch into the
 * "warning" state. Within this window the due timestamp should be rendered
 * with a subtle alert treatment so agents can notice it without being
 * distracted.
 */
declare const SLA_WARNING_THRESHOLD_MS: number;
/**
 * Classifies how close a due timestamp is to `now` so we can subtly alert
 * agents as it approaches (and after it passes).
 *
 * If `windowStartedAt` is provided, thresholds scale with the total SLA
 * window length - so a 5-minute SLA doesn't read as "urgent" from t=0 - and
 * are capped by the fixed wall-clock thresholds so a 24-hour SLA doesn't
 * sit in "warning" for 12 hours. If `windowStartedAt` isn't known, we fall
 * back to the fixed wall-clock thresholds.
 */
declare function computeSlaUrgency(dueAt: Date, now: Date, options?: {
  windowStartedAt?: Date | null;
}): SlaUrgency;
//#endregion
export { DEFAULT_SUPPORT_SLA, SLA_URGENT_THRESHOLD_MS, SLA_WARNING_THRESHOLD_MS, SlaUrgency, SupportSlaConfig, computeFirstResponseDueAt, computeNextResponseDueAt, computeSlaUrgency };
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