Ghost/core/server/services/mega/segment-parser.js

const getSegmentsFromHtml = (html) => {
    const cheerio = require('cheerio');
    const $ = cheerio.load(html);

    const allSegments = $('[data-gh-segment]')
        .get()
        .map(el => el.attribs['data-gh-segment']);

    // only return unique elements
    return [...new Set(allSegments)];
};

module.exports.getSegmentsFromHtml = getSegmentsFromHtml;