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define(['./_castSlice', './_hasUnicode', './_stringToArray', './toString'], function(castSlice, hasUnicode, stringToArray, toString) {
  /** Used as a safe reference for `undefined` in pre-ES5 environments. */  var undefined;
  /**   * Creates a function like `_.lowerFirst`.   *   * @private   * @param {string} methodName The name of the `String` case method to use.   * @returns {Function} Returns the new case function.   */  function createCaseFirst(methodName) {    return function(string) {      string = toString(string);
      var strSymbols = hasUnicode(string)        ? stringToArray(string)        : undefined;
      var chr = strSymbols        ? strSymbols[0]        : string.charAt(0);
      var trailing = strSymbols        ? castSlice(strSymbols, 1).join('')        : string.slice(1);
      return chr[methodName]() + trailing;    };  }
  return createCaseFirst;});