const playwright = require("playwright");

(async () => {
  const browser = await playwright.chromium.launch({ headless: false });
  const page = await browser.newPage();
  await page.goto("https://m4tkx.csb.app");
  await page.focus("#date-input");

  // does not work
  await page.keyboard.sendCharacters("01012020");

  // works
  // await page.keyboard.type("01012020");
})();