/**
 * Converts tabs to the appropriate number of spaces in the given string.
 * @param str Root string.
 * @returns string
 */
export declare const convertTabsToSpaces: (str: string) => string;
/**
 * Inserts a substring into a string at a specific position.
 * @param str Root string.
 * @param position Position to insert.
 * @param strToInsert String to be inserted.
 * @returns string
 */
export declare const insertStringAt: (str: string, position: number, strToInsert: string) => string;