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'use strict';
var toRegex = require('to-regex');
var regexNot = require('regex-not');
var cached;
/**
* Get the last element from `array`
* @param {Array} `array`
* @return {*}
*/
exports.last = function(arr) {
return arr[arr.length - 1];
};
/**
* Create and cache regex to use for text nodes
*/
exports.createRegex = function(pattern, include) {
if (cached) return cached;
var opts = {contains: true, strictClose: false};
var not = regexNot.create(pattern, opts);
var re;
if (typeof include === 'string') {
re = toRegex('^(?:' + include + '|' + not + ')', opts);
} else {
re = toRegex(not, opts);
}
return (cached = re);
};
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