import type { SearchProvider, SearchResult, SearchOptions, IndexableItem, SearchCorpus } from "./types.js";
export declare const DEFAULT_EMBEDDING_MODEL = "Xenova/all-MiniLM-L6-v2";
/** True for per-account live entity buckets (not the static global corpora keys). */
export declare function isResourceAccountKey(key: string): boolean;
/** entities corpus is always capped; other corpora only cap TTL-backed items. */
export declare function needsPerKeyCap(corpus: SearchCorpus, expiresAt: number | undefined): boolean;
export declare function countResourceAccountKeys(store: ReadonlyMap<string, unknown[]>): number;
export declare function totalItemCount(store: ReadonlyMap<string, readonly unknown[]>): number;
export declare function findLruKey(store: ReadonlyMap<string, unknown[]>, keyLastAccessed: ReadonlyMap<string, number>, predicate: (key: string) => boolean): string | undefined;
export declare function findSoonestExpiryIndex(items: ReadonlyArray<{
    expiresAt: number | undefined;
}>): number;
export interface LocalSearchProviderOptions {
    cacheDir?: string;
    model?: string;
}
export declare class LocalSearchProvider implements SearchProvider {
    private available;
    private initError;
    private embed;
    private readonly cacheDir;
    private readonly model;
    private store;
    private keyLastAccessed;
    private evictionTimer;
    constructor(options?: LocalSearchProviderOptions);
    initialize(): Promise<void>;
    getInitError(): string | undefined;
    isAvailable(): boolean;
    evictExpired(): void;
    search(query: string, options?: SearchOptions): Promise<SearchResult[]>;
    index(item: IndexableItem): Promise<void>;
    private touchKey;
    private evictStoreKey;
    private evictOneGlobally;
}
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