/**
 * Converts a string to start case (i.e., each word capitalized, with spaces between words).
 *
 * @since 1.0.0
 *
 * @param {string} str - The string to convert.
 *
 * @returns {string} - The string in start case.
 *
 * @example
 * startCase('foo_bar_baz'); // 'Foo Bar Baz'
 */
declare const startCase: (str?: string) => string;
export default startCase;