device emulation: Firefox does not support isMobile about playwright-cli HOT 1 CLOSED

BrowserContextOptions.isMobile is not supported in Firefox. isMobile was removed.
const { firefox, devices } = require('playwright');

(async () => {
  const browser = await firefox.launch({
    headless: false
  });
  const context = await browser.newContext({
    ...devices['JioPhone 2'],
    isMobile: undefined
  });

  // Open new page
  const page = await context.newPage();

  // Go to https://www.wikipedia.org/
  await page.goto('https://www.wikipedia.org/');
})();

  if (contextOptions.isMobile && browserType.name() === "firefox") {
    console.warn("warning: BrowserContextOptions.isMobile is not supported in Firefox. isMobile was removed.")
    contextOptions.isMobile = undefined
  }