import type { RehypeCustomCodeOptions } from "./plugin.js";
/**
 * Get language from class names
 * @param classNames class names e.g. `["language-javascript"]`
 * @returns language e.g. `javascript`
 *
 * @example
 * ```ts
 * const lang = getLangFromClassNames(["language-javascript"]);
 * console.log(lang);
 * // >>> javascript
 * ```
 *
 * @example
 * ```ts
 * const lang = getLangFromClassNames(["unknown-lang"]);
 * console.log(lang);
 * // >>> undefined
 * ```
 */
export declare const getLangFromClassNames: (classNames?: string[], associations?: RehypeCustomCodeOptions["langAssociations"]) => string | undefined;
//# sourceMappingURL=lang.d.ts.map