/**
 * Lo-Dash 2.4.1 (Custom Build) <http://lodash.com/>
 * Build: `lodash modularize modern exports="node" -o ./modern/`
 * Copyright 2012-2013 The Dojo Foundation <http://dojofoundation.org/>
 * Based on Underscore.js 1.5.2 <http://underscorejs.org/LICENSE>
 * Copyright 2009-2013 Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors
 * Available under MIT license <http://lodash.com/license>
 */
var escapeHtmlChar = require('../internals/escapeHtmlChar'),
    keys = require('../objects/keys'),
    reUnescapedHtml = require('../internals/reUnescapedHtml');

/**
 * Converts the characters `&`, `<`, `>`, `"`, and `'` in `string` to their
 * corresponding HTML entities.
 *
 * @static
 * @memberOf _
 * @category Utilities
 * @param {string} string The string to escape.
 * @returns {string} Returns the escaped string.
 * @example
 *
 * _.escape('Fred, Wilma, & Pebbles');
 * // => 'Fred, Wilma, &amp; Pebbles'
 */
function escape(string) {
  return string == null ? '' : String(string).replace(reUnescapedHtml, escapeHtmlChar);
}

module.exports = escape;
