/**
 * Extract significant YINI line from YINI content (that may be surrounded by comments.).
 * @param rawYiniContent For example:
 *     // This whole line is a comment.
 *     ^SectionName# This part is a comment.
 *     // This whole line is a comment.
 * @returns Will filter out any comments (before or after) and return only one single significant YINI line.
 */
export declare const extractYiniLine: (rawYiniContent: string) => string;