1  var toString = require('./toString');
 2  
 3  /**
 4   * Converts `string`, as a whole, to upper case just like
 5   * [String#toUpperCase](https://mdn.io/toUpperCase).
 6   *
 7   * @static
 8   * @memberOf _
 9   * @since 4.0.0
10   * @category String
11   * @param {string} [string=''] The string to convert.
12   * @returns {string} Returns the upper cased string.
13   * @example
14   *
15   * _.toUpper('--foo-bar--');
16   * // => '--FOO-BAR--'
17   *
18   * _.toUpper('fooBar');
19   * // => 'FOOBAR'
20   *
21   * _.toUpper('__foo_bar__');
22   * // => '__FOO_BAR__'
23   */
24  function toUpper(value) {
25    return toString(value).toUpperCase();
26  }
27  
28  module.exports = toUpper;