import * as Ucanto from '@ucanto/interface';
interface ByAudience {
    audience: Ucanto.DID<'key' | 'mailto'>;
}
export type Query = ByAudience;
export interface DelegationsStorage<Cap extends Ucanto.Capability = Ucanto.Capability> {
    /**
     * Write several items into storage.
     *
     * Options accepts an optional `cause` that MUST be the CID of the invocation
     * that contains the given delegations. Implementations MAY choose
     * to avoid storing delegations as long as they can reliably
     * retrieve the invocation by CID when they need to return the given delegations.
     */
    putMany: (delegations: Ucanto.Delegation<Ucanto.Tuple<Cap>>[], options?: {
        cause?: Ucanto.Link;
    }) => Promise<Ucanto.Result<Ucanto.Unit, Ucanto.Failure>>;
    /**
     * get number of stored items
     */
    count: () => Promise<bigint>;
    /**
     * find all items that match the query
     */
    find: (query: Query) => Promise<Ucanto.Result<Ucanto.Delegation<Ucanto.Tuple<Cap>>[], Ucanto.Failure>>;
}
export {};
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