1  var baseToString = require('./_baseToString'),
 2      castSlice = require('./_castSlice'),
 3      charsEndIndex = require('./_charsEndIndex'),
 4      stringToArray = require('./_stringToArray'),
 5      toString = require('./toString'),
 6      trimmedEndIndex = require('./_trimmedEndIndex');
 7  
 8  /**
 9   * Removes trailing whitespace or specified characters from `string`.
10   *
11   * @static
12   * @memberOf _
13   * @since 4.0.0
14   * @category String
15   * @param {string} [string=''] The string to trim.
16   * @param {string} [chars=whitespace] The characters to trim.
17   * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
18   * @returns {string} Returns the trimmed string.
19   * @example
20   *
21   * _.trimEnd('  abc  ');
22   * // => '  abc'
23   *
24   * _.trimEnd('-_-abc-_-', '_-');
25   * // => '-_-abc'
26   */
27  function trimEnd(string, chars, guard) {
28    string = toString(string);
29    if (string && (guard || chars === undefined)) {
30      return string.slice(0, trimmedEndIndex(string) + 1);
31    }
32    if (!string || !(chars = baseToString(chars))) {
33      return string;
34    }
35    var strSymbols = stringToArray(string),
36        end = charsEndIndex(strSymbols, stringToArray(chars)) + 1;
37  
38    return castSlice(strSymbols, 0, end).join('');
39  }
40  
41  module.exports = trimEnd;