import type { CodeSource, KnowledgeFragment } from "./types.js";
interface CommentSpan {
    start: number;
    end: number;
    text: string;
}
export interface RubyMaskResult {
    masked: string;
    comments: CommentSpan[];
}
export declare function maskRubySourceDetailed(content: string): RubyMaskResult;
export declare function maskRubySource(content: string): string;
export declare function extractRubyKeywordBlocks(source: CodeSource): KnowledgeFragment[];
export {};
//# sourceMappingURL=keyword-block-engine.d.ts.map