Function getFirstFrame

test/e2e/doc-shots.test.ts:15–18

(page: Page)

const DOC_SHOT_VIEWPORT = {width: 1440, height: 2400};

const getFirstFrame = async (page: Page): Promise<Frame | undefined> => {
  const handle = await page.locator('iframe').first().elementHandle();
  return (await handle?.contentFrame()) ?? undefined;
};

const prepareFirstFrame = async (page: Page): Promise<void> => {
  const iframe = page.locator('iframe').first();