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+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.isHtml = exports.cloneDom = exports.domEach = exports.cssCase = exports.camelCase = exports.isCheerio = exports.isTag = void 0;
+var htmlparser2_1 = require("htmlparser2");
+var domhandler_1 = require("domhandler");
+/**
+ * Check if the DOM element is a tag.
+ *
+ * `isTag(type)` includes `<script>` and `<style>` tags.
+ *
+ * @private
+ * @category Utils
+ * @param type - DOM node to check.
+ * @returns Whether the node is a tag.
+ */
+exports.isTag = htmlparser2_1.DomUtils.isTag;
+/**
+ * Checks if an object is a Cheerio instance.
+ *
+ * @category Utils
+ * @param maybeCheerio - The object to check.
+ * @returns Whether the object is a Cheerio instance.
+ */
+function isCheerio(maybeCheerio) {
+ return maybeCheerio.cheerio != null;
+}
+exports.isCheerio = isCheerio;
+/**
+ * Convert a string to camel case notation.
+ *
+ * @private
+ * @category Utils
+ * @param str - String to be converted.
+ * @returns String in camel case notation.
+ */
+function camelCase(str) {
+ return str.replace(/[_.-](\w|$)/g, function (_, x) { return x.toUpperCase(); });
+}
+exports.camelCase = camelCase;
+/**
+ * Convert a string from camel case to "CSS case", where word boundaries are
+ * described by hyphens ("-") and all characters are lower-case.
+ *
+ * @private
+ * @category Utils
+ * @param str - String to be converted.
+ * @returns String in "CSS case".
+ */
+function cssCase(str) {
+ return str.replace(/[A-Z]/g, '-$&').toLowerCase();
+}
+exports.cssCase = cssCase;
+/**
+ * Iterate over each DOM element without creating intermediary Cheerio instances.
+ *
+ * This is indented for use internally to avoid otherwise unnecessary memory
+ * pressure introduced by _make.
+ *
+ * @category Utils
+ * @param array - Array to iterate over.
+ * @param fn - Function to call.
+ * @returns The original instance.
+ */
+function domEach(array, fn) {
+ var len = array.length;
+ for (var i = 0; i < len; i++)
+ fn(array[i], i);
+ return array;
+}
+exports.domEach = domEach;
+/**
+ * Create a deep copy of the given DOM structure. Sets the parents of the copies
+ * of the passed nodes to `null`.
+ *
+ * @private
+ * @category Utils
+ * @param dom - The htmlparser2-compliant DOM structure.
+ * @returns - The cloned DOM.
+ */
+function cloneDom(dom) {
+ var clone = 'length' in dom
+ ? Array.prototype.map.call(dom, function (el) { return domhandler_1.cloneNode(el, true); })
+ : [domhandler_1.cloneNode(dom, true)];
+ // Add a root node around the cloned nodes
+ var root = new domhandler_1.Document(clone);
+ clone.forEach(function (node) {
+ node.parent = root;
+ });
+ return clone;
+}
+exports.cloneDom = cloneDom;
+/**
+ * A simple way to check for HTML strings. Tests for a `<` within a string,
+ * immediate followed by a letter and eventually followed by a `>`.
+ *
+ * @private
+ */
+var quickExpr = /<[a-zA-Z][^]*>/;
+/**
+ * Check if string is HTML.
+ *
+ * @private
+ * @category Utils
+ * @param str - String to check.
+ * @returns Indicates if `str` is HTML.
+ */
+function isHtml(str) {
+ // Run the regex
+ return quickExpr.test(str);
+}
+exports.isHtml = isHtml;