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const cheerio = require('cheerio');
/**
* Parse an HTML string and return its content.
* @param {String}
* @return {cheerio.DOM}
*/
function parse(html) {
const $ = cheerio.load(html);
const $el = $('html, body').first();
return $el.length > 0 ? $el : $;
}
/**
* Return main element for a DOM.
* @param {cheerio.DOM}
* @return {cheerio.Node}
*/
function root($) {
const $el = $('html, body, > div').first();
return $el.length > 0 ? $el : $.root();
}
/**
* Return text node of an element.
* @param {cheerio.Node}
* @return {String}
*/
function textNode($el) {
return $el.children.reduce(
(text, e) => {
if (e.type == 'text') text += e.data;
return text;
},
''
);
}
/**
* Cleanup a DOM by removing all useless divs.
* @param {cheerio.Node}
* @param {cheerio.DOM}
* @return {cheerio.Node}
*/
function cleanup($el, $) {
$el.find('div').each(function() {
const $div = $(this);
cleanup($div, $);
$div.replaceWith($div.html());
});
return $el;
}
module.exports = {
parse,
textNode,
root,
cleanup
};
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