import type { NostrEvent, ReqFilter } from "../nostr";
export interface FlatReqFilter {
    keys: number;
    ids?: string;
    authors?: string;
    kinds?: number;
    "#e"?: string;
    "#p"?: string;
    "#t"?: string;
    "#d"?: string;
    "#r"?: string;
    search?: string;
    since?: number;
    until?: number;
    limit?: number;
    relay?: string;
    resultSetId: string;
}
export interface Optimizer {
    expandFilter(f: ReqFilter): Array<FlatReqFilter>;
    getDiff(prev: Array<ReqFilter>, next: Array<ReqFilter>): Array<FlatReqFilter>;
    flatMerge(all: Array<FlatReqFilter>): Array<ReqFilter>;
    compress(all: Array<ReqFilter>): Array<ReqFilter>;
    schnorrVerify(ev: NostrEvent): boolean;
    batchVerify(evs: Array<NostrEvent>): Array<boolean>;
}
export declare const DefaultOptimizer: Optimizer;
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