import type { JSONValue } from "@strands-agents/sdk";
export type StructuredPatchHunk = {
    oldStart: number;
    oldLines: number;
    newStart: number;
    newLines: number;
    lines: string[];
};
export type FileToolDisplay = {
    previews?: string[];
    structuredPatch?: StructuredPatchHunk[];
};
type DisplayStateStore = {
    get(key: string): JSONValue | undefined;
    set(key: string, value: unknown): void;
    delete(key: string): void;
};
export declare function setFileToolDisplay(appState: DisplayStateStore, toolUseId: string | undefined, display: FileToolDisplay): void;
export declare function takeFileToolDisplay(appState: DisplayStateStore, toolUseId: string | null): FileToolDisplay | undefined;
export {};