import type { MemoryItem, MemoryRef, MemorySearchRequest, MemorySearchResult } from "./memory-provider-contract.ts";
export interface LocalMemorySearchStrategy {
    score: (queryTokens: ReadonlySet<string>, item: MemoryItem) => number;
    reason: (score: number, item: MemoryItem) => string;
}
export declare function tokenizeMemorySearch(text: string): Set<string>;
export declare function tokenOverlapScore(queryTokens: ReadonlySet<string>, textParts: Array<string | undefined>): number;
export declare function matchesMemorySearchRequest(item: MemoryItem, request: MemorySearchRequest): boolean;
export declare function searchLocalMemoryItems(items: readonly MemoryItem[], request: MemorySearchRequest, strategy: LocalMemorySearchStrategy): MemorySearchResult[];
export declare function fetchLocalMemoryItem(items: readonly MemoryItem[], providerId: string, ref: MemoryRef): MemoryItem | undefined;
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