Scrape all your HN upvoted links and Export to CSV or HTML (from your browser).

hn_upvoted_scraper.js

/* 
Search HN upvoted from your browser and Export to CSV or HTML.
1. Navigate your browser to https://news.ycombinator.com/user?id=YOUR_USER_ID
2. Copy code to the browser console and run.
4. Look for the popup window in the upper-left corner of your browser.
*/

(function () {
    const popup = createPopup('HN upvoted');
    const base = 'news.ycombinator.com';
    if (location.host != base || !(location.pathname == '/user' || location.pathname == '/upvoted'))  {
        popup.innerHTML = 'ERROR: Unknown URL, Go to HN user page and try again.';
        return;
    }
    const id = location.search.split('=')[1];
    const types = {
        csv: {
            header: 'Title,Link',
            filename: id + "_HN_upvoted",
            totype: a => toCSV(a.title, a.link)
        },
        html: {
            header: '<title>' + id + " HN upvoted</title><h1>" + id + " HN upvoted</h1>",
            filename: id + "-HN-upvoted",
            totype: a => `<p><a href="${a.link}" target="_blank" rel="noopener">${a.title}</a>`
        }
    };
    const upvoted = [];
    popup.innerHTML = 
        '<button id=exportToCsv data-filetype=csv>Export to CSV</button><br><br>' + 
        '<button id=exportToHtml data-filetype=html>Export to HTML</button><br><br>' +
        '<input id=query> <button id=search>Search</button><br><br>' + 
        '<div id=results></div>';
    exportToCsv.onclick = exportToHtml.onclick = async function () {
        const filetype = this.dataset.filetype;
        await getupvoted();
        downloadFile(types[filetype].header, upvoted.map(types[filetype].totype), types[filetype].filename, filetype);
        results.innerHTML = 'Finished exporting.';
    };
    search.onclick = async function () {
        const re = new RegExp(query.value, 'i');
        await getupvoted();
        const found = upvoted.map(types.html.totype).filter(f => f.match(re));
        if (found.length == 0) {
            results.innerHTML = 'not found';
        } else {
            results.innerHTML = found.join('');
        }
    };
    async function getupvoted() {
        if (upvoted.length > 0) return;
        const url = `https://${base}/upvoted?id=${id}&p=`;
        for (var p = 1; true; p++) {
            results.innerHTML = 'Fetching page #' + p + '<br><br>';
            const response = await fetch(url + p);
            const html = await response.text();
            const parser = new DOMParser();
            const doc = parser.parseFromString(html, "text/html");
            doc.querySelectorAll('a.storylink').forEach(a => upvoted.push({title: a.innerText, link: a.href}));
            if (doc.querySelector('a.morelink') == null) break;
        }
    }

    function createPopup(title) {
        const div = document.body.appendChild(document.createElement("div"));
        div.innerHTML = title + " <a onclick='document.body.removeChild(this.parentNode)' style='cursor: pointer; padding: 4px'>X</a><br><br>";
        div.style.position = "absolute";
        div.style.zIndex = "1000";
        div.style.left = "8px";
        div.style.top = "8px";
        div.style.backgroundColor = "white";
        return div.appendChild(document.createElement("div"));
    }
    function toCSV(...fields) {
        return fields.map(field => `"${field == undefined ? "" : field.toString().replace(/"/g, '""')}"`).join(',');
    }
    function downloadFile(header, lines, filename, filetype) {
        const a = document.body.appendChild(document.createElement('a'));
        a.href = URL.createObjectURL(new Blob([header + "\n" + lines.join("\n")], {type: 'text/' + filetype}));
        const date = (new Date()).toISOString().replace(/[T:]/g, "-").substr(0, 19);
        a.download = `${filename}-${date}.${filetype}`;
        a.click();
    }
})();

Credit goes to Gabriel Sroka at https://gabrielsroka.github.io/