/**
 * Insert a substring into a string
 *
 * @param input The string
 * @param start The position which to insert the substring
 * @param deleteCount The number of characters to delete
 * @param items The substring(s) to insert
 * @returns The modified strings
 */
export declare function splice(input: string, start: number, deleteCount: number, ...items: string[]): string;
export default splice;