test-puppeteer.js

'use strict';

const puppeteer = require('puppeteer');

(async function main() {
  try {
    const browser = await puppeteer.launch();
    const [page] = await browser.pages();

    await page.goto('https://example.org/');

    const data = await page.evaluate(() => {
      const hrefs = Array.from(
        document.querySelectorAll('a[href]'),
        ({ href }) => href
      );
      return Array.from(new Set(hrefs));
    });

    console.log(data);

    await browser.close();
  } catch (err) {
    console.error(err);
  }
})();