import { type CollectExpiredResult } from '../retention';
import type { MailboxAdvanceCursorInput, MailboxAppendInput, MailboxCursorState, MailboxMessage, MailboxPage, MailboxReadQuery, MailboxRecordDeliveryInput, MailboxCollectExpiredInput, MailboxStore, MailboxUsage } from '../mailbox';
import type { QuotaStore } from '../quota';
import type { Clock } from '../stores';
import { type TenantId } from '../tenant';
export declare class InMemoryMailboxStore implements MailboxStore {
    #private;
    /** The mailbox reads its limit from quota; quota never reads the mailbox. */
    constructor(clock: Clock, quota: Pick<QuotaStore, 'readEntitlement'>);
    append(tenant: TenantId, input: MailboxAppendInput): Promise<MailboxMessage>;
    readUsage(tenant: TenantId): Promise<MailboxUsage>;
    readAfter(tenant: TenantId, query: MailboxReadQuery): Promise<MailboxPage>;
    advanceCursor(tenant: TenantId, input: MailboxAdvanceCursorInput): Promise<MailboxCursorState>;
    recordDelivery(tenant: TenantId, input: MailboxRecordDeliveryInput): Promise<MailboxCursorState>;
    readCursor(tenant: TenantId, deviceId: string): Promise<MailboxCursorState>;
    collectExpired(tenant: TenantId, input: MailboxCollectExpiredInput): Promise<CollectExpiredResult>;
}