112 lines
3.1 KiB
JavaScript
112 lines
3.1 KiB
JavaScript
"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;
|