/**
 * Determines whether the string begins with the provided prefix, and refines
 * the output if possible. Uses the built-in [`String.prototype.startsWith`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/startsWith).
 *
 * @param data - The input string.
 * @param prefix - The prefix to check for.
 * @signature
 *   R.startsWith(data, prefix);
 * @example
 *   R.startsWith("hello world", "hello"); // true
 *   R.startsWith("hello world", "world"); // false
 * @dataFirst
 * @category String
 */
declare function startsWith<T extends string, Prefix extends string>(data: T, prefix: string extends Prefix ? never : Prefix): data is T & `${Prefix}${string}`;
declare function startsWith(data: string, prefix: string): boolean;
/**
 * Determines whether the string begins with the provided prefix, and refines
 * the output if possible. Uses the built-in [`String.prototype.startsWith`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/startsWith).
 *
 * @param prefix - The prefix to check for.
 * @signature
 *   R.startsWith(prefix)(data);
 * @example
 *   R.pipe("hello world", R.startsWith("hello")); // true
 *   R.pipe("hello world", R.startsWith("world")); // false
 * @dataLast
 * @category String
 */
declare function startsWith<Prefix extends string>(prefix: string extends Prefix ? never : Prefix): <T extends string>(data: T) => data is T & `${Prefix}${string}`;
declare function startsWith(prefix: string): (data: string) => boolean;

export { startsWith };