import type { DetectLanguage } from "./detect";
/**
 * Detects the programming language from file content using Linguist logic.
 *
 * This method is preferred when used in combination with `detectByExtension`.
 *
 * @note Always provide a list of languages to search (`searchAt`),
 *  - otherwise detection accuracy may drop.
 *  - For example, "Roff" tends to match many inputs if no filter is applied.
 */
export declare function detectByContent(content: Buffer | string, searchAt: DetectLanguage[]): DetectLanguage | null;