Function checkHydrated

test/lib/next-webdriver.ts:176–205

()

    debugPrint(`Waiting hydration for ${fullUrl}`)

    const checkHydrated = async () => {
      await browser.eval(() => {
        return new Promise<void>((callback) => {
          // if it's not a Next.js app return
          if (
            !document.documentElement.innerHTML.includes('__NEXT_DATA__') &&
            // @ts-ignore next exists on window if it's a Next.js page.
            typeof ((window as any).next && (window as any).next.version) ===
              'undefined'
          ) {
            console.log('Not a next.js page, resolving hydrate check')
            callback()
          }

          // TODO: should we also ensure router.isReady is true
          // by default before resolving?
          if ((window as any).__NEXT_HYDRATED) {
            console.log('Next.js page already hydrated')
            callback()
          } else {
            let timeout = setTimeout(callback, 10 * 1000)
            ;(window as any).__NEXT_HYDRATED_CB = function () {
              clearTimeout(timeout)
              console.log('Next.js hydrate callback fired')
              callback()
            }
          }
        })
      })
    }

    try {
      await checkHydrated()