Highlight string parts

highlight.js

/**
 * Highlight passed array's strings in the passed string.
 * @param {string} string - Original string.
 * @param {Array<string>} matched - List of items to highlight.
 * @returns {string} Highlighted string.
 */
highlightStr: function (string, matched) {
    string || (string = '');
    matched || (matched = []);

    if (_.isEmpty(matched)) {
        return string;
    }

    var normalizedMatch = _.sortBy(matched, 'length').reverse();
    var regexpStr = '(' + normalizedMatch.join('|') + ')';
    var regexp = new RegExp(regexpStr, 'gi');
    var result = string.replace(regexp, '<b>$1</b>');

    return result;
}