import { DelegationSemantics, DelegationChain } from "./attenuation.js";
import { Ucan } from "./types.js";
import { Capability } from "./capability/index.js";
export interface IndexByAudience {
    [audienceDID: string]: Array<{
        processedUcan: Ucan;
        capabilities: DelegationChain[];
    }>;
}
export declare class Store {
    private index;
    private knownSemantics;
    constructor(knownSemantics: DelegationSemantics, index: IndexByAudience);
    static fromTokens(knownSemantics: DelegationSemantics, tokens: Iterable<string> | AsyncIterable<string>): Promise<Store>;
    add(ucan: Ucan): Promise<void>;
    getByAudience(audience: string): Ucan[];
    findByAudience(audience: string, predicate: (ucan: Ucan) => boolean): Ucan | null;
    findWithCapability(audience: string, requiredCapability: Capability, requiredIssuer: string): Iterable<DelegationChain>;
}