export declare const PUBLIC_STATIC_REVISION_HEADER = "X-OneBots-Public-Static-Revision";
export declare const EXPECTED_PUBLIC_STATIC_REVISION_HEADER = "X-OneBots-Expected-Public-Static-Revision";
interface PublicStaticRevisionContext {
    get?(name: string): string;
    set(name: string, value: string): void;
}
export interface PublicStaticSnapshot {
    files: string[];
    revision: string;
}
/** 绑定静态根身份及其全部目录项，避免同名文件被替换后旧页面继续写入。 */
export declare function capturePublicStaticSnapshot(root: string): PublicStaticSnapshot;
export declare function setPublicStaticRevision(context: Pick<PublicStaticRevisionContext, "set">, revision: string): void;
/** 兼容旧客户端省略前置条件；新客户端可拒绝目录内容或根路径已经变化的写操作。 */
export declare function assertPublicStaticRevisionPrecondition(context: Pick<PublicStaticRevisionContext, "get">, root: string, operation: string): void;
export declare class PublicStaticRevisionMismatchError extends Error {
    constructor(message: string);
}
export {};
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