import type { ChatbotFile } from '../chatbot.types.js';
export declare const MAX_TEXTUAL_PREVIEW_BYTES: number;
export declare const SNIPPET_LINES = 3;
export declare const SNIPPET_COMPACT_THRESHOLD = 4;
export declare function fileExtension(file: ChatbotFile): string;
export declare function isTextualFile(file: ChatbotFile): boolean;
export interface TextualContentSuccess {
    text: string;
    truncated: boolean;
    lineCount: number;
}
export interface TextualContentError {
    error: string;
}
export type TextualContent = TextualContentSuccess | TextualContentError;
export declare function loadTextualContent(file: ChatbotFile): Promise<TextualContent>;
export declare function snippetOf(text: string, lines?: number): string;
//# sourceMappingURL=textual-file.d.ts.map