/**
 * The function then checks whether the input is a string or not by using the typeof operator to compare it
 * with the string "string" and checking if it is an instance of the String constructor.
 *
 * This function can be used to check if a given value is a string, which can be useful in situations where a string is required,
 * such as validating user input in a form or checking if a variable is a string before manipulating it.
 *
 * @param input
 * @returns a boolean value, true if input is a string, false otherwise.
 */
export declare const assertString: (input: any) => boolean;