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How to use mountSuspensePrimaryChildren method in Playwright Internal

Best JavaScript code snippet using playwright-internal

ReactFiberBeginWork.new.js

Source:ReactFiberBeginWork.new.js

...1719        markSpawnedWork(SomeRetryLane);1720      }1721      return fallbackFragment;1722    } else {1723      return mountSuspensePrimaryChildren(1724        workInProgress,1725        nextPrimaryChildren,1726        renderLanes,1727      );1728    }1729  } else {1730    // This is an update.1731    // If the current fiber has a SuspenseState, that means it's already showing1732    // a fallback.1733    const prevState: null | SuspenseState = current.memoizedState;1734    if (prevState !== null) {1735      // The current tree is already showing a fallback1736      // Special path for hydration1737      if (enableSuspenseServerRenderer) {1738        const dehydrated = prevState.dehydrated;1739        if (dehydrated !== null) {1740          if (!didSuspend) {1741            return updateDehydratedSuspenseComponent(1742              current,1743              workInProgress,1744              dehydrated,1745              prevState,1746              renderLanes,1747            );1748          } else if (1749            (workInProgress.memoizedState: null | SuspenseState) !== null1750          ) {1751            // Something suspended and we should still be in dehydrated mode.1752            // Leave the existing child in place.1753            workInProgress.child = current.child;1754            // The dehydrated completion pass expects this flag to be there1755            // but the normal suspense pass doesn't.1756            workInProgress.flags |= DidCapture;1757            return null;1758          } else {1759            // Suspended but we should no longer be in dehydrated mode.1760            // Therefore we now have to render the fallback.1761            const nextPrimaryChildren = nextProps.children;1762            const nextFallbackChildren = nextProps.fallback;1763            const fallbackChildFragment = mountSuspenseFallbackAfterRetryWithoutHydrating(1764              current,1765              workInProgress,1766              nextPrimaryChildren,1767              nextFallbackChildren,1768              renderLanes,1769            );1770            const primaryChildFragment: Fiber = (workInProgress.child: any);1771            primaryChildFragment.memoizedState = mountSuspenseOffscreenState(1772              renderLanes,1773            );1774            workInProgress.memoizedState = SUSPENDED_MARKER;1775            return fallbackChildFragment;1776          }1777        }1778      }1779      if (showFallback) {1780        const nextFallbackChildren = nextProps.fallback;1781        const nextPrimaryChildren = nextProps.children;1782        const fallbackChildFragment = updateSuspenseFallbackChildren(1783          current,1784          workInProgress,1785          nextPrimaryChildren,1786          nextFallbackChildren,1787          renderLanes,1788        );1789        const primaryChildFragment: Fiber = (workInProgress.child: any);1790        const prevOffscreenState: OffscreenState | null = (current.child: any)1791          .memoizedState;1792        primaryChildFragment.memoizedState =1793          prevOffscreenState === null1794            ? mountSuspenseOffscreenState(renderLanes)1795            : updateSuspenseOffscreenState(prevOffscreenState, renderLanes);1796        primaryChildFragment.childLanes = getRemainingWorkInPrimaryTree(1797          current,1798          renderLanes,1799        );1800        workInProgress.memoizedState = SUSPENDED_MARKER;1801        return fallbackChildFragment;1802      } else {1803        const nextPrimaryChildren = nextProps.children;1804        const primaryChildFragment = updateSuspensePrimaryChildren(1805          current,1806          workInProgress,1807          nextPrimaryChildren,1808          renderLanes,1809        );1810        workInProgress.memoizedState = null;1811        return primaryChildFragment;1812      }1813    } else {1814      // The current tree is not already showing a fallback.1815      if (showFallback) {1816        // Timed out.1817        const nextFallbackChildren = nextProps.fallback;1818        const nextPrimaryChildren = nextProps.children;1819        const fallbackChildFragment = updateSuspenseFallbackChildren(1820          current,1821          workInProgress,1822          nextPrimaryChildren,1823          nextFallbackChildren,1824          renderLanes,1825        );1826        const primaryChildFragment: Fiber = (workInProgress.child: any);1827        const prevOffscreenState: OffscreenState | null = (current.child: any)1828          .memoizedState;1829        primaryChildFragment.memoizedState =1830          prevOffscreenState === null1831            ? mountSuspenseOffscreenState(renderLanes)1832            : updateSuspenseOffscreenState(prevOffscreenState, renderLanes);1833        primaryChildFragment.childLanes = getRemainingWorkInPrimaryTree(1834          current,1835          renderLanes,1836        );1837        // Skip the primary children, and continue working on the1838        // fallback children.1839        workInProgress.memoizedState = SUSPENDED_MARKER;1840        return fallbackChildFragment;1841      } else {1842        // Still haven't timed out. Continue rendering the children, like we1843        // normally do.1844        const nextPrimaryChildren = nextProps.children;1845        const primaryChildFragment = updateSuspensePrimaryChildren(1846          current,1847          workInProgress,1848          nextPrimaryChildren,1849          renderLanes,1850        );1851        workInProgress.memoizedState = null;1852        return primaryChildFragment;1853      }1854    }1855  }1856}1857function mountSuspensePrimaryChildren(1858  workInProgress,1859  primaryChildren,1860  renderLanes,1861) {1862  const mode = workInProgress.mode;1863  const primaryChildProps: OffscreenProps = {1864    mode: 'visible',1865    children: primaryChildren,1866  };1867  const primaryChildFragment = createFiberFromOffscreen(1868    primaryChildProps,1869    mode,1870    renderLanes,1871    null,1872  );1873  primaryChildFragment.return = workInProgress;1874  workInProgress.child = primaryChildFragment;1875  return primaryChildFragment;1876}1877function mountSuspenseFallbackChildren(1878  workInProgress,1879  primaryChildren,1880  fallbackChildren,1881  renderLanes,1882) {1883  const mode = workInProgress.mode;1884  const progressedPrimaryFragment: Fiber | null = workInProgress.child;1885  const primaryChildProps: OffscreenProps = {1886    mode: 'hidden',1887    children: primaryChildren,1888  };1889  let primaryChildFragment;1890  let fallbackChildFragment;1891  if ((mode & BlockingMode) === NoMode && progressedPrimaryFragment !== null) {1892    // In legacy mode, we commit the primary tree as if it successfully1893    // completed, even though it's in an inconsistent state.1894    primaryChildFragment = progressedPrimaryFragment;1895    primaryChildFragment.childLanes = NoLanes;1896    primaryChildFragment.pendingProps = primaryChildProps;1897    if (enableProfilerTimer && workInProgress.mode & ProfileMode) {1898      // Reset the durations from the first pass so they aren't included in the1899      // final amounts. This seems counterintuitive, since we're intentionally1900      // not measuring part of the render phase, but this makes it match what we1901      // do in Concurrent Mode.1902      primaryChildFragment.actualDuration = 0;1903      primaryChildFragment.actualStartTime = -1;1904      primaryChildFragment.selfBaseDuration = 0;1905      primaryChildFragment.treeBaseDuration = 0;1906    }1907    fallbackChildFragment = createFiberFromFragment(1908      fallbackChildren,1909      mode,1910      renderLanes,1911      null,1912    );1913  } else {1914    primaryChildFragment = createFiberFromOffscreen(1915      primaryChildProps,1916      mode,1917      NoLanes,1918      null,1919    );1920    fallbackChildFragment = createFiberFromFragment(1921      fallbackChildren,1922      mode,1923      renderLanes,1924      null,1925    );1926  }1927  primaryChildFragment.return = workInProgress;1928  fallbackChildFragment.return = workInProgress;1929  primaryChildFragment.sibling = fallbackChildFragment;1930  workInProgress.child = primaryChildFragment;1931  return fallbackChildFragment;1932}1933function createWorkInProgressOffscreenFiber(1934  current: Fiber,1935  offscreenProps: OffscreenProps,1936) {1937  // The props argument to `createWorkInProgress` is `any` typed, so we use this1938  // wrapper function to constrain it.1939  return createWorkInProgress(current, offscreenProps);1940}1941function updateSuspensePrimaryChildren(1942  current,1943  workInProgress,1944  primaryChildren,1945  renderLanes,1946) {1947  const currentPrimaryChildFragment: Fiber = (current.child: any);1948  const currentFallbackChildFragment: Fiber | null =1949    currentPrimaryChildFragment.sibling;1950  const primaryChildFragment = createWorkInProgressOffscreenFiber(1951    currentPrimaryChildFragment,1952    {1953      mode: 'visible',1954      children: primaryChildren,1955    },1956  );1957  if ((workInProgress.mode & BlockingMode) === NoMode) {1958    primaryChildFragment.lanes = renderLanes;1959  }1960  primaryChildFragment.return = workInProgress;1961  primaryChildFragment.sibling = null;1962  if (currentFallbackChildFragment !== null) {1963    // Delete the fallback child fragment1964    const deletions = workInProgress.deletions;1965    if (deletions === null) {1966      workInProgress.deletions = [currentFallbackChildFragment];1967      // TODO (effects) Rename this to better reflect its new usage (e.g. ChildDeletions)1968      workInProgress.flags |= Deletion;1969    } else {1970      deletions.push(currentFallbackChildFragment);1971    }1972  }1973  workInProgress.child = primaryChildFragment;1974  return primaryChildFragment;1975}1976function updateSuspenseFallbackChildren(1977  current,1978  workInProgress,1979  primaryChildren,1980  fallbackChildren,1981  renderLanes,1982) {1983  const mode = workInProgress.mode;1984  const currentPrimaryChildFragment: Fiber = (current.child: any);1985  const currentFallbackChildFragment: Fiber | null =1986    currentPrimaryChildFragment.sibling;1987  const primaryChildProps: OffscreenProps = {1988    mode: 'hidden',1989    children: primaryChildren,1990  };1991  let primaryChildFragment;1992  if (1993    // In legacy mode, we commit the primary tree as if it successfully1994    // completed, even though it's in an inconsistent state.1995    (mode & BlockingMode) === NoMode &&1996    // Make sure we're on the second pass, i.e. the primary child fragment was1997    // already cloned. In legacy mode, the only case where this isn't true is1998    // when DevTools forces us to display a fallback; we skip the first render1999    // pass entirely and go straight to rendering the fallback. (In Concurrent2000    // Mode, SuspenseList can also trigger this scenario, but this is a legacy-2001    // only codepath.)2002    workInProgress.child !== currentPrimaryChildFragment2003  ) {2004    const progressedPrimaryFragment: Fiber = (workInProgress.child: any);2005    primaryChildFragment = progressedPrimaryFragment;2006    primaryChildFragment.childLanes = NoLanes;2007    primaryChildFragment.pendingProps = primaryChildProps;2008    if (enableProfilerTimer && workInProgress.mode & ProfileMode) {2009      // Reset the durations from the first pass so they aren't included in the2010      // final amounts. This seems counterintuitive, since we're intentionally2011      // not measuring part of the render phase, but this makes it match what we2012      // do in Concurrent Mode.2013      primaryChildFragment.actualDuration = 0;2014      primaryChildFragment.actualStartTime = -1;2015      primaryChildFragment.selfBaseDuration =2016        currentPrimaryChildFragment.selfBaseDuration;2017      primaryChildFragment.treeBaseDuration =2018        currentPrimaryChildFragment.treeBaseDuration;2019    }2020    // The fallback fiber was added as a deletion effect during the first pass.2021    // However, since we're going to remain on the fallback, we no longer want2022    // to delete it.2023    workInProgress.deletions = null;2024  } else {2025    primaryChildFragment = createWorkInProgressOffscreenFiber(2026      currentPrimaryChildFragment,2027      primaryChildProps,2028    );2029    // Since we're reusing a current tree, we need to reuse the flags, too.2030    // (We don't do this in legacy mode, because in legacy mode we don't re-use2031    // the current tree; see previous branch.)2032    primaryChildFragment.subtreeFlags =2033      currentPrimaryChildFragment.subtreeFlags & StaticMask;2034  }2035  let fallbackChildFragment;2036  if (currentFallbackChildFragment !== null) {2037    fallbackChildFragment = createWorkInProgress(2038      currentFallbackChildFragment,2039      fallbackChildren,2040    );2041  } else {2042    fallbackChildFragment = createFiberFromFragment(2043      fallbackChildren,2044      mode,2045      renderLanes,2046      null,2047    );2048    // Needs a placement effect because the parent (the Suspense boundary) already2049    // mounted but this is a new fiber.2050    fallbackChildFragment.flags |= Placement;2051  }2052  fallbackChildFragment.return = workInProgress;2053  primaryChildFragment.return = workInProgress;2054  primaryChildFragment.sibling = fallbackChildFragment;2055  workInProgress.child = primaryChildFragment;2056  return fallbackChildFragment;2057}2058function retrySuspenseComponentWithoutHydrating(2059  current: Fiber,2060  workInProgress: Fiber,2061  renderLanes: Lanes,2062) {2063  // This will add the old fiber to the deletion list2064  reconcileChildFibers(workInProgress, current.child, null, renderLanes);2065  // We're now not suspended nor dehydrated.2066  const nextProps = workInProgress.pendingProps;2067  const primaryChildren = nextProps.children;2068  const primaryChildFragment = mountSuspensePrimaryChildren(2069    workInProgress,2070    primaryChildren,2071    renderLanes,2072  );2073  // Needs a placement effect because the parent (the Suspense boundary) already2074  // mounted but this is a new fiber.2075  primaryChildFragment.flags |= Placement;2076  workInProgress.memoizedState = null;2077  return primaryChildFragment;2078}2079function mountSuspenseFallbackAfterRetryWithoutHydrating(2080  current,2081  workInProgress,2082  primaryChildren,2083  fallbackChildren,2084  renderLanes,2085) {2086  const mode = workInProgress.mode;2087  const primaryChildFragment = createFiberFromOffscreen(2088    primaryChildren,2089    mode,2090    NoLanes,2091    null,2092  );2093  const fallbackChildFragment = createFiberFromFragment(2094    fallbackChildren,2095    mode,2096    renderLanes,2097    null,2098  );2099  // Needs a placement effect because the parent (the Suspense2100  // boundary) already mounted but this is a new fiber.2101  fallbackChildFragment.flags |= Placement;2102  primaryChildFragment.return = workInProgress;2103  fallbackChildFragment.return = workInProgress;2104  primaryChildFragment.sibling = fallbackChildFragment;2105  workInProgress.child = primaryChildFragment;2106  if ((workInProgress.mode & BlockingMode) !== NoMode) {2107    // We will have dropped the effect list which contains the2108    // deletion. We need to reconcile to delete the current child.2109    reconcileChildFibers(workInProgress, current.child, null, renderLanes);2110  }2111  return fallbackChildFragment;2112}2113function mountDehydratedSuspenseComponent(2114  workInProgress: Fiber,2115  suspenseInstance: SuspenseInstance,2116  renderLanes: Lanes,2117): null | Fiber {2118  // During the first pass, we'll bail out and not drill into the children.2119  // Instead, we'll leave the content in place and try to hydrate it later.2120  if ((workInProgress.mode & BlockingMode) === NoMode) {2121    if (__DEV__) {2122      console.error(2123        'Cannot hydrate Suspense in legacy mode. Switch from ' +2124          'ReactDOM.hydrate(element, container) to ' +2125          'ReactDOM.createBlockingRoot(container, { hydrate: true })' +2126          '.render(element) or remove the Suspense components from ' +2127          'the server rendered components.',2128      );2129    }2130    workInProgress.lanes = laneToLanes(SyncLane);2131  } else if (isSuspenseInstanceFallback(suspenseInstance)) {2132    // This is a client-only boundary. Since we won't get any content from the server2133    // for this, we need to schedule that at a higher priority based on when it would2134    // have timed out. In theory we could render it in this pass but it would have the2135    // wrong priority associated with it and will prevent hydration of parent path.2136    // Instead, we'll leave work left on it to render it in a separate commit.2137    // TODO This time should be the time at which the server rendered response that is2138    // a parent to this boundary was displayed. However, since we currently don't have2139    // a protocol to transfer that time, we'll just estimate it by using the current2140    // time. This will mean that Suspense timeouts are slightly shifted to later than2141    // they should be.2142    // Schedule a normal pri update to render this content.2143    if (enableSchedulerTracing) {2144      markSpawnedWork(DefaultHydrationLane);2145    }2146    workInProgress.lanes = laneToLanes(DefaultHydrationLane);2147  } else {2148    // We'll continue hydrating the rest at offscreen priority since we'll already2149    // be showing the right content coming from the server, it is no rush.2150    workInProgress.lanes = laneToLanes(OffscreenLane);2151    if (enableSchedulerTracing) {2152      markSpawnedWork(OffscreenLane);2153    }2154  }2155  return null;2156}2157function updateDehydratedSuspenseComponent(2158  current: Fiber,2159  workInProgress: Fiber,2160  suspenseInstance: SuspenseInstance,2161  suspenseState: SuspenseState,2162  renderLanes: Lanes,2163): null | Fiber {2164  // We should never be hydrating at this point because it is the first pass,2165  // but after we've already committed once.2166  warnIfHydrating();2167  if ((getExecutionContext() & RetryAfterError) !== NoContext) {2168    return retrySuspenseComponentWithoutHydrating(2169      current,2170      workInProgress,2171      renderLanes,2172    );2173  }2174  if ((workInProgress.mode & BlockingMode) === NoMode) {2175    return retrySuspenseComponentWithoutHydrating(2176      current,2177      workInProgress,2178      renderLanes,2179    );2180  }2181  if (isSuspenseInstanceFallback(suspenseInstance)) {2182    // This boundary is in a permanent fallback state. In this case, we'll never2183    // get an update and we'll never be able to hydrate the final content. Let's just try the2184    // client side render instead.2185    return retrySuspenseComponentWithoutHydrating(2186      current,2187      workInProgress,2188      renderLanes,2189    );2190  }2191  // We use lanes to indicate that a child might depend on context, so if2192  // any context has changed, we need to treat is as if the input might have changed.2193  const hasContextChanged = includesSomeLane(renderLanes, current.childLanes);2194  if (didReceiveUpdate || hasContextChanged) {2195    // This boundary has changed since the first render. This means that we are now unable to2196    // hydrate it. We might still be able to hydrate it using a higher priority lane.2197    const root = getWorkInProgressRoot();2198    if (root !== null) {2199      const attemptHydrationAtLane = getBumpedLaneForHydration(2200        root,2201        renderLanes,2202      );2203      if (2204        attemptHydrationAtLane !== NoLane &&2205        attemptHydrationAtLane !== suspenseState.retryLane2206      ) {2207        // Intentionally mutating since this render will get interrupted. This2208        // is one of the very rare times where we mutate the current tree2209        // during the render phase.2210        suspenseState.retryLane = attemptHydrationAtLane;2211        // TODO: Ideally this would inherit the event time of the current render2212        const eventTime = NoTimestamp;2213        scheduleUpdateOnFiber(current, attemptHydrationAtLane, eventTime);2214      } else {2215        // We have already tried to ping at a higher priority than we're rendering with2216        // so if we got here, we must have failed to hydrate at those levels. We must2217        // now give up. Instead, we're going to delete the whole subtree and instead inject2218        // a new real Suspense boundary to take its place, which may render content2219        // or fallback. This might suspend for a while and if it does we might still have2220        // an opportunity to hydrate before this pass commits.2221      }2222    }2223    // If we have scheduled higher pri work above, this will probably just abort the render2224    // since we now have higher priority work, but in case it doesn't, we need to prepare to2225    // render something, if we time out. Even if that requires us to delete everything and2226    // skip hydration.2227    // Delay having to do this as long as the suspense timeout allows us.2228    renderDidSuspendDelayIfPossible();2229    return retrySuspenseComponentWithoutHydrating(2230      current,2231      workInProgress,2232      renderLanes,2233    );2234  } else if (isSuspenseInstancePending(suspenseInstance)) {2235    // This component is still pending more data from the server, so we can't hydrate its2236    // content. We treat it as if this component suspended itself. It might seem as if2237    // we could just try to render it client-side instead. However, this will perform a2238    // lot of unnecessary work and is unlikely to complete since it often will suspend2239    // on missing data anyway. Additionally, the server might be able to render more2240    // than we can on the client yet. In that case we'd end up with more fallback states2241    // on the client than if we just leave it alone. If the server times out or errors2242    // these should update this boundary to the permanent Fallback state instead.2243    // Mark it as having captured (i.e. suspended).2244    workInProgress.flags |= DidCapture;2245    // Leave the child in place. I.e. the dehydrated fragment.2246    workInProgress.child = current.child;2247    // Register a callback to retry this boundary once the server has sent the result.2248    let retry = retryDehydratedSuspenseBoundary.bind(null, current);2249    if (enableSchedulerTracing) {2250      retry = Schedule_tracing_wrap(retry);2251    }2252    registerSuspenseInstanceRetry(suspenseInstance, retry);2253    return null;2254  } else {2255    // This is the first attempt.2256    reenterHydrationStateFromDehydratedSuspenseInstance(2257      workInProgress,2258      suspenseInstance,2259    );2260    const nextProps = workInProgress.pendingProps;2261    const primaryChildren = nextProps.children;2262    const primaryChildFragment = mountSuspensePrimaryChildren(2263      workInProgress,2264      primaryChildren,2265      renderLanes,2266    );2267    // Mark the children as hydrating. This is a fast path to know whether this2268    // tree is part of a hydrating tree. This is used to determine if a child2269    // node has fully mounted yet, and for scheduling event replaying.2270    // Conceptually this is similar to Placement in that a new subtree is2271    // inserted into the React tree here. It just happens to not need DOM2272    // mutations because it already exists.2273    primaryChildFragment.flags |= Hydrating;2274    return primaryChildFragment;2275  }2276}...

ReactFiberBeginWork.old.js

Source:ReactFiberBeginWork.old.js

...955          markSpawnedWork(SomeRetryLane);956        }957        return _fallbackFragment;958      } else {959        return mountSuspensePrimaryChildren(workInProgress, nextPrimaryChildren, renderLanes);960      }961    } else {962      // This is an update.963      // If the current fiber has a SuspenseState, that means it's already showing964      // a fallback.965      var prevState = current.memoizedState;966      if (prevState !== null) {967        // The current tree is already showing a fallback968        // Special path for hydration969        {970          var _dehydrated = prevState.dehydrated;971          if (_dehydrated !== null) {972            if (!didSuspend) {973              return updateDehydratedSuspenseComponent(current, workInProgress, _dehydrated, prevState, renderLanes);974            } else if (workInProgress.memoizedState !== null) {975              // Something suspended and we should still be in dehydrated mode.976              // Leave the existing child in place.977              workInProgress.child = current.child; // The dehydrated completion pass expects this flag to be there978              // but the normal suspense pass doesn't.979              workInProgress.flags |= DidCapture;980              return null;981            } else {982              // Suspended but we should no longer be in dehydrated mode.983              // Therefore we now have to render the fallback.984              var _nextPrimaryChildren = nextProps.children;985              var _nextFallbackChildren = nextProps.fallback;986              var fallbackChildFragment = mountSuspenseFallbackAfterRetryWithoutHydrating(current, workInProgress, _nextPrimaryChildren, _nextFallbackChildren, renderLanes);987              var _primaryChildFragment2 = workInProgress.child;988              _primaryChildFragment2.memoizedState = mountSuspenseOffscreenState(renderLanes);989              workInProgress.memoizedState = SUSPENDED_MARKER;990              return fallbackChildFragment;991            }992          }993        }994        if (showFallback) {995          var _nextFallbackChildren2 = nextProps.fallback;996          var _nextPrimaryChildren2 = nextProps.children;997          var _fallbackChildFragment = updateSuspenseFallbackChildren(current, workInProgress, _nextPrimaryChildren2, _nextFallbackChildren2, renderLanes);998          var _primaryChildFragment3 = workInProgress.child;999          var prevOffscreenState = current.child.memoizedState;1000          _primaryChildFragment3.memoizedState = prevOffscreenState === null ? mountSuspenseOffscreenState(renderLanes) : updateSuspenseOffscreenState(prevOffscreenState, renderLanes);1001          _primaryChildFragment3.childLanes = getRemainingWorkInPrimaryTree(current, renderLanes);1002          workInProgress.memoizedState = SUSPENDED_MARKER;1003          return _fallbackChildFragment;1004        } else {1005          var _nextPrimaryChildren3 = nextProps.children;1006          var _primaryChildFragment4 = updateSuspensePrimaryChildren(current, workInProgress, _nextPrimaryChildren3, renderLanes);1007          workInProgress.memoizedState = null;1008          return _primaryChildFragment4;1009        }1010      } else {1011        // The current tree is not already showing a fallback.1012        if (showFallback) {1013          // Timed out.1014          var _nextFallbackChildren3 = nextProps.fallback;1015          var _nextPrimaryChildren4 = nextProps.children;1016          var _fallbackChildFragment2 = updateSuspenseFallbackChildren(current, workInProgress, _nextPrimaryChildren4, _nextFallbackChildren3, renderLanes);1017          var _primaryChildFragment5 = workInProgress.child;1018          var _prevOffscreenState = current.child.memoizedState;1019          _primaryChildFragment5.memoizedState = _prevOffscreenState === null ? mountSuspenseOffscreenState(renderLanes) : updateSuspenseOffscreenState(_prevOffscreenState, renderLanes);1020          _primaryChildFragment5.childLanes = getRemainingWorkInPrimaryTree(current, renderLanes); // Skip the primary children, and continue working on the1021          // fallback children.1022          workInProgress.memoizedState = SUSPENDED_MARKER;1023          return _fallbackChildFragment2;1024        } else {1025          // Still haven't timed out. Continue rendering the children, like we1026          // normally do.1027          var _nextPrimaryChildren5 = nextProps.children;1028          var _primaryChildFragment6 = updateSuspensePrimaryChildren(current, workInProgress, _nextPrimaryChildren5, renderLanes);1029          workInProgress.memoizedState = null;1030          return _primaryChildFragment6;1031        }1032      }1033    }1034  }1035  function mountSuspensePrimaryChildren(workInProgress, primaryChildren, renderLanes) {1036    var mode = workInProgress.mode;1037    var primaryChildProps = {1038      mode: 'visible',1039      children: primaryChildren1040    };1041    var primaryChildFragment = createFiberFromOffscreen(primaryChildProps, mode, renderLanes, null);1042    primaryChildFragment.return = workInProgress;1043    workInProgress.child = primaryChildFragment;1044    return primaryChildFragment;1045  }1046  function mountSuspenseFallbackChildren(workInProgress, primaryChildren, fallbackChildren, renderLanes) {1047    var mode = workInProgress.mode;1048    var progressedPrimaryFragment = workInProgress.child;1049    var primaryChildProps = {1050      mode: 'hidden',1051      children: primaryChildren1052    };1053    var primaryChildFragment;1054    var fallbackChildFragment;1055    if ((mode & BlockingMode) === NoMode && progressedPrimaryFragment !== null) {1056      // In legacy mode, we commit the primary tree as if it successfully1057      // completed, even though it's in an inconsistent state.1058      primaryChildFragment = progressedPrimaryFragment;1059      primaryChildFragment.childLanes = NoLanes;1060      primaryChildFragment.pendingProps = primaryChildProps;1061      if ( workInProgress.mode & ProfileMode) {1062        // Reset the durations from the first pass so they aren't included in the1063        // final amounts. This seems counterintuitive, since we're intentionally1064        // not measuring part of the render phase, but this makes it match what we1065        // do in Concurrent Mode.1066        primaryChildFragment.actualDuration = 0;1067        primaryChildFragment.actualStartTime = -1;1068        primaryChildFragment.selfBaseDuration = 0;1069        primaryChildFragment.treeBaseDuration = 0;1070      }1071      fallbackChildFragment = createFiberFromFragment(fallbackChildren, mode, renderLanes, null);1072    } else {1073      primaryChildFragment = createFiberFromOffscreen(primaryChildProps, mode, NoLanes, null);1074      fallbackChildFragment = createFiberFromFragment(fallbackChildren, mode, renderLanes, null);1075    }1076    primaryChildFragment.return = workInProgress;1077    fallbackChildFragment.return = workInProgress;1078    primaryChildFragment.sibling = fallbackChildFragment;1079    workInProgress.child = primaryChildFragment;1080    return fallbackChildFragment;1081  }1082  function createWorkInProgressOffscreenFiber(current, offscreenProps) {1083    // The props argument to `createWorkInProgress` is `any` typed, so we use this1084    // wrapper function to constrain it.1085    return createWorkInProgress(current, offscreenProps);1086  }1087  function updateSuspensePrimaryChildren(current, workInProgress, primaryChildren, renderLanes) {1088    var currentPrimaryChildFragment = current.child;1089    var currentFallbackChildFragment = currentPrimaryChildFragment.sibling;1090    var primaryChildFragment = createWorkInProgressOffscreenFiber(currentPrimaryChildFragment, {1091      mode: 'visible',1092      children: primaryChildren1093    });1094    if ((workInProgress.mode & BlockingMode) === NoMode) {1095      primaryChildFragment.lanes = renderLanes;1096    }1097    primaryChildFragment.return = workInProgress;1098    primaryChildFragment.sibling = null;1099    if (currentFallbackChildFragment !== null) {1100      // Delete the fallback child fragment1101      currentFallbackChildFragment.nextEffect = null;1102      currentFallbackChildFragment.flags = Deletion;1103      workInProgress.firstEffect = workInProgress.lastEffect = currentFallbackChildFragment;1104    }1105    workInProgress.child = primaryChildFragment;1106    return primaryChildFragment;1107  }1108  function updateSuspenseFallbackChildren(current, workInProgress, primaryChildren, fallbackChildren, renderLanes) {1109    var mode = workInProgress.mode;1110    var currentPrimaryChildFragment = current.child;1111    var currentFallbackChildFragment = currentPrimaryChildFragment.sibling;1112    var primaryChildProps = {1113      mode: 'hidden',1114      children: primaryChildren1115    };1116    var primaryChildFragment;1117    if ( // In legacy mode, we commit the primary tree as if it successfully1118    // completed, even though it's in an inconsistent state.1119    (mode & BlockingMode) === NoMode && // Make sure we're on the second pass, i.e. the primary child fragment was1120    // already cloned. In legacy mode, the only case where this isn't true is1121    // when DevTools forces us to display a fallback; we skip the first render1122    // pass entirely and go straight to rendering the fallback. (In Concurrent1123    // Mode, SuspenseList can also trigger this scenario, but this is a legacy-1124    // only codepath.)1125    workInProgress.child !== currentPrimaryChildFragment) {1126      var progressedPrimaryFragment = workInProgress.child;1127      primaryChildFragment = progressedPrimaryFragment;1128      primaryChildFragment.childLanes = NoLanes;1129      primaryChildFragment.pendingProps = primaryChildProps;1130      if ( workInProgress.mode & ProfileMode) {1131        // Reset the durations from the first pass so they aren't included in the1132        // final amounts. This seems counterintuitive, since we're intentionally1133        // not measuring part of the render phase, but this makes it match what we1134        // do in Concurrent Mode.1135        primaryChildFragment.actualDuration = 0;1136        primaryChildFragment.actualStartTime = -1;1137        primaryChildFragment.selfBaseDuration = currentPrimaryChildFragment.selfBaseDuration;1138        primaryChildFragment.treeBaseDuration = currentPrimaryChildFragment.treeBaseDuration;1139      } // The fallback fiber was added as a deletion effect during the first pass.1140      // However, since we're going to remain on the fallback, we no longer want1141      // to delete it. So we need to remove it from the list. Deletions are stored1142      // on the same list as effects. We want to keep the effects from the primary1143      // tree. So we copy the primary child fragment's effect list, which does not1144      // include the fallback deletion effect.1145      var progressedLastEffect = primaryChildFragment.lastEffect;1146      if (progressedLastEffect !== null) {1147        workInProgress.firstEffect = primaryChildFragment.firstEffect;1148        workInProgress.lastEffect = progressedLastEffect;1149        progressedLastEffect.nextEffect = null;1150      } else {1151        // TODO: Reset this somewhere else? Lol legacy mode is so weird.1152        workInProgress.firstEffect = workInProgress.lastEffect = null;1153      }1154    } else {1155      primaryChildFragment = createWorkInProgressOffscreenFiber(currentPrimaryChildFragment, primaryChildProps);1156    }1157    var fallbackChildFragment;1158    if (currentFallbackChildFragment !== null) {1159      fallbackChildFragment = createWorkInProgress(currentFallbackChildFragment, fallbackChildren);1160    } else {1161      fallbackChildFragment = createFiberFromFragment(fallbackChildren, mode, renderLanes, null); // Needs a placement effect because the parent (the Suspense boundary) already1162      // mounted but this is a new fiber.1163      fallbackChildFragment.flags |= Placement;1164    }1165    fallbackChildFragment.return = workInProgress;1166    primaryChildFragment.return = workInProgress;1167    primaryChildFragment.sibling = fallbackChildFragment;1168    workInProgress.child = primaryChildFragment;1169    return fallbackChildFragment;1170  }1171  function retrySuspenseComponentWithoutHydrating(current, workInProgress, renderLanes) {1172    // This will add the old fiber to the deletion list1173    reconcileChildFibers(workInProgress, current.child, null, renderLanes); // We're now not suspended nor dehydrated.1174    var nextProps = workInProgress.pendingProps;1175    var primaryChildren = nextProps.children;1176    var primaryChildFragment = mountSuspensePrimaryChildren(workInProgress, primaryChildren, renderLanes); // Needs a placement effect because the parent (the Suspense boundary) already1177    // mounted but this is a new fiber.1178    primaryChildFragment.flags |= Placement;1179    workInProgress.memoizedState = null;1180    return primaryChildFragment;1181  }1182  function mountSuspenseFallbackAfterRetryWithoutHydrating(current, workInProgress, primaryChildren, fallbackChildren, renderLanes) {1183    var mode = workInProgress.mode;1184    var primaryChildFragment = createFiberFromOffscreen(primaryChildren, mode, NoLanes, null);1185    var fallbackChildFragment = createFiberFromFragment(fallbackChildren, mode, renderLanes, null); // Needs a placement effect because the parent (the Suspense1186    // boundary) already mounted but this is a new fiber.1187    fallbackChildFragment.flags |= Placement;1188    primaryChildFragment.return = workInProgress;1189    fallbackChildFragment.return = workInProgress;1190    primaryChildFragment.sibling = fallbackChildFragment;1191    workInProgress.child = primaryChildFragment;1192    if ((workInProgress.mode & BlockingMode) !== NoMode) {1193      // We will have dropped the effect list which contains the1194      // deletion. We need to reconcile to delete the current child.1195      reconcileChildFibers(workInProgress, current.child, null, renderLanes);1196    }1197    return fallbackChildFragment;1198  }1199  function mountDehydratedSuspenseComponent(workInProgress, suspenseInstance, renderLanes) {1200    // During the first pass, we'll bail out and not drill into the children.1201    // Instead, we'll leave the content in place and try to hydrate it later.1202    if ((workInProgress.mode & BlockingMode) === NoMode) {1203      {1204        error('Cannot hydrate Suspense in legacy mode. Switch from ' + 'ReactDOM.hydrate(element, container) to ' + 'ReactDOM.createBlockingRoot(container, { hydrate: true })' + '.render(element) or remove the Suspense components from ' + 'the server rendered components.');1205      }1206      workInProgress.lanes = laneToLanes(SyncLane);1207    } else if (isSuspenseInstanceFallback(suspenseInstance)) {1208      // This is a client-only boundary. Since we won't get any content from the server1209      // for this, we need to schedule that at a higher priority based on when it would1210      // have timed out. In theory we could render it in this pass but it would have the1211      // wrong priority associated with it and will prevent hydration of parent path.1212      // Instead, we'll leave work left on it to render it in a separate commit.1213      // TODO This time should be the time at which the server rendered response that is1214      // a parent to this boundary was displayed. However, since we currently don't have1215      // a protocol to transfer that time, we'll just estimate it by using the current1216      // time. This will mean that Suspense timeouts are slightly shifted to later than1217      // they should be.1218      // Schedule a normal pri update to render this content.1219      {1220        markSpawnedWork(DefaultHydrationLane);1221      }1222      workInProgress.lanes = laneToLanes(DefaultHydrationLane);1223    } else {1224      // We'll continue hydrating the rest at offscreen priority since we'll already1225      // be showing the right content coming from the server, it is no rush.1226      workInProgress.lanes = laneToLanes(OffscreenLane);1227      {1228        markSpawnedWork(OffscreenLane);1229      }1230    }1231    return null;1232  }1233  function updateDehydratedSuspenseComponent(current, workInProgress, suspenseInstance, suspenseState, renderLanes) {1234    // We should never be hydrating at this point because it is the first pass,1235    // but after we've already committed once.1236    warnIfHydrating();1237    if ((getExecutionContext() & RetryAfterError) !== NoContext) {1238      return retrySuspenseComponentWithoutHydrating(current, workInProgress, renderLanes);1239    }1240    if ((workInProgress.mode & BlockingMode) === NoMode) {1241      return retrySuspenseComponentWithoutHydrating(current, workInProgress, renderLanes);1242    }1243    if (isSuspenseInstanceFallback(suspenseInstance)) {1244      // This boundary is in a permanent fallback state. In this case, we'll never1245      // get an update and we'll never be able to hydrate the final content. Let's just try the1246      // client side render instead.1247      return retrySuspenseComponentWithoutHydrating(current, workInProgress, renderLanes);1248    } // We use lanes to indicate that a child might depend on context, so if1249    // any context has changed, we need to treat is as if the input might have changed.1250    var hasContextChanged = includesSomeLane(renderLanes, current.childLanes);1251    if (didReceiveUpdate || hasContextChanged) {1252      // This boundary has changed since the first render. This means that we are now unable to1253      // hydrate it. We might still be able to hydrate it using a higher priority lane.1254      var root = getWorkInProgressRoot();1255      if (root !== null) {1256        var attemptHydrationAtLane = getBumpedLaneForHydration(root, renderLanes);1257        if (attemptHydrationAtLane !== NoLane && attemptHydrationAtLane !== suspenseState.retryLane) {1258          // Intentionally mutating since this render will get interrupted. This1259          // is one of the very rare times where we mutate the current tree1260          // during the render phase.1261          suspenseState.retryLane = attemptHydrationAtLane; // TODO: Ideally this would inherit the event time of the current render1262          var eventTime = NoTimestamp;1263          scheduleUpdateOnFiber(current, attemptHydrationAtLane, eventTime);1264        }1265      } // If we have scheduled higher pri work above, this will probably just abort the render1266      // since we now have higher priority work, but in case it doesn't, we need to prepare to1267      // render something, if we time out. Even if that requires us to delete everything and1268      // skip hydration.1269      // Delay having to do this as long as the suspense timeout allows us.1270      renderDidSuspendDelayIfPossible();1271      return retrySuspenseComponentWithoutHydrating(current, workInProgress, renderLanes);1272    } else if (isSuspenseInstancePending(suspenseInstance)) {1273      // This component is still pending more data from the server, so we can't hydrate its1274      // content. We treat it as if this component suspended itself. It might seem as if1275      // we could just try to render it client-side instead. However, this will perform a1276      // lot of unnecessary work and is unlikely to complete since it often will suspend1277      // on missing data anyway. Additionally, the server might be able to render more1278      // than we can on the client yet. In that case we'd end up with more fallback states1279      // on the client than if we just leave it alone. If the server times out or errors1280      // these should update this boundary to the permanent Fallback state instead.1281      // Mark it as having captured (i.e. suspended).1282      workInProgress.flags |= DidCapture; // Leave the child in place. I.e. the dehydrated fragment.1283      workInProgress.child = current.child; // Register a callback to retry this boundary once the server has sent the result.1284      var retry = retryDehydratedSuspenseBoundary.bind(null, current);1285      {1286        retry = unstable_wrap(retry);1287      }1288      registerSuspenseInstanceRetry(suspenseInstance, retry);1289      return null;1290    } else {1291      // This is the first attempt.1292      reenterHydrationStateFromDehydratedSuspenseInstance(workInProgress, suspenseInstance);1293      var nextProps = workInProgress.pendingProps;1294      var primaryChildren = nextProps.children;1295      var primaryChildFragment = mountSuspensePrimaryChildren(workInProgress, primaryChildren, renderLanes); // Mark the children as hydrating. This is a fast path to know whether this1296      // tree is part of a hydrating tree. This is used to determine if a child1297      // node has fully mounted yet, and for scheduling event replaying.1298      // Conceptually this is similar to Placement in that a new subtree is1299      // inserted into the React tree here. It just happens to not need DOM1300      // mutations because it already exists.1301      primaryChildFragment.flags |= Hydrating;1302      return primaryChildFragment;1303    }1304  }1305  function scheduleWorkOnFiber(fiber, renderLanes) {1306    fiber.lanes = mergeLanes(fiber.lanes, renderLanes);1307    var alternate = fiber.alternate;1308    if (alternate !== null) {1309      alternate.lanes = mergeLanes(alternate.lanes, renderLanes);...

FiberBeginWork.js

Source:FiberBeginWork.js

...246      );247      workInProgress.memoizedState = SUSPENDED_MARKER;248      return fallbackFragment;249    } else {250      return mountSuspensePrimaryChildren(251        workInProgress,252        nextPrimaryChildren,253        renderLanes,254      )255    }256  } else {257    // Update.258    // If the current fiber has a SuspenseState, that means it's already 259    // showing a fallback.260    const prevState = current.memoizedState;261    if (prevState !== null){262      if (showFallback){263        const nextFallbackChildren = nextProps.fallback;264        const nextPrimaryChildren = nextProps.children;265        const fallbackChildFragment = updateSuspenseFallbackChildren(266          current,267          workInProgress,268          nextPrimaryChildren,269          nextFallbackChildren,270          renderLanes271        )272        const primaryChildFragment = workInProgress.child;273        const prevOffscreenState = current.child.memoizedState;274        primaryChildFragment.memoizedState = 275          prevOffscreenState === null276          ? mountSuspenseOffscreenState(renderLanes)277          : updateSuspenseOffscreenState(prevOffscreenState, renderLanes);      278        primaryChildFragment.childLanes = removeLanes(279          current.childLanes, 280          renderLanes281        );282        workInProgress.memoizedState = SUSPENDED_MARKER;283        return fallbackChildFragment;       284      } else {285        const nextPrimaryChildren = nextProps.children;286        const primaryChildFragment = updateSuspensePrimaryChildren(287          current,288          workInProgress,289          nextPrimaryChildren,290          renderLanes,291        );292        workInProgress.memoizedState = null;293        return primaryChildFragment;294      }295    } else {296      // the current tree is not showing a fallback.297      if(showFallback){298        // Timed out.299        const nextFallbackChildren = nextProps.fallback;300        const nextPrimaryChildren = nextProps.children;301        const fallbackChildFragment = updateSuspenseFallbackChildren(302          current,303          workInProgress,304          nextPrimaryChildren,305          nextFallbackChildren,306          renderLanes307        )308        const primaryChildFragment = workInProgress.child;309        const prevOffscreenState = current.child.memoizedState;310        primaryChildFragment.memoizedState = 311          prevOffscreenState === null312          ? mountSuspenseOffscreenState(renderLanes)313          : updateSuspenseOffscreenState(prevOffscreenState, renderLanes);      314        primaryChildFragment.childLanes = removeLanes(315          current.childLanes, 316          renderLanes317        );318        workInProgress.memoizedState = SUSPENDED_MARKER;319        return fallbackChildFragment;320      } else {321        const nextPrimaryChildren = nextProps.children;322        const primaryChildFragment = updateSuspensePrimaryChildren(323          current,324          workInProgress,325          nextPrimaryChildren,326          renderLanes,327        );328        workInProgress.memoizedState = null;329        return primaryChildFragment;330      }331    }332  }333}334function mountSuspensePrimaryChildren(335  workInProgress,336  primaryChildren,337  renderLanes338){339  const primaryChildProps = {340    mode: 'visible',341    children: primaryChildren,342  };343  // createFiberFromOffscreen()344  const primaryChildFragment = createFiber(345    OffscreenComponent,346    primaryChildProps347  );348  primaryChildFragment.elementType = JEACT_OFFSCREEN_TYPE;...

Using AI Code Generation

1const { mountSuspensePrimaryChildren } = require('playwright/lib/server/supplements/recorder/recorderSupplement.js');2const { mountSuspenseFallbackChildren } = require('playwright/lib/server/supplements/recorder/recorderSupplement.js');3mountSuspensePrimaryChildren();4mountSuspenseFallbackChildren();5const { mountSuspensePrimaryChildren } = require('playwright/lib/server/supplements/recorder/recorderSupplement.js');6const { mountSuspenseFallbackChildren } = require('playwright/lib/server/supplements/recorder/recorderSupplement.js');7mountSuspensePrimaryChildren();8mountSuspenseFallbackChildren();

Using AI Code Generation

1const { mountSuspensePrimaryChildren } = require('@playwright/test/lib/server/supplements/recorderSupplement.js');2const { mountSuspenseFallbackChildren } = require('@playwright/test/lib/server/supplements/recorderSupplement.js');3const { mountSuspensePrimaryChildren } = require('@playwright/test/lib/server/supplements/recorderSupplement.js');4const { mountSuspenseFallbackChildren } = require('@playwright/test/lib/server/supplements/recorderSupplement.js');5const { test } = require('@playwright/test');6test('My test', async ({ page }) => {7  await mountSuspensePrimaryChildren(page);8  await mountSuspenseFallbackChildren(page);9  await mountSuspensePrimaryChildren(page);10  await mountSuspenseFallbackChildren(page);11});12const { test } = require('@playwright/test');13test('My test', async ({ page }) => {14  await mountSuspensePrimaryChildren(page);15  await mountSuspenseFallbackChildren(page);16  await mountSuspensePrimaryChildren(page);17  await mountSuspenseFallbackChildren(page);18});19const { test } = require('@playwright/test');20test('My test', async ({ page }) => {21  await mountSuspensePrimaryChildren(page);22  await mountSuspenseFallbackChildren(page);23  await mountSuspensePrimaryChildren(page);24  await mountSuspenseFallbackChildren(page);25});26const { test } = require('@playwright/test

Using AI Code Generation

1const { mountSuspensePrimaryChildren } = require('playwright/lib/server/supplements/recorder/recorderSupplement.js');2const { Page } = require('playwright/lib/server/page.js');3const { ElementHandle } = require('playwright/lib/server/dom.js');4const { Frame } = require('playwright/lib/server/frames.js');5const { mountSuspensePrimaryChildren } = require('playwright/lib/server/supplements/recorder/recorderSupplement.js');6const { Page } = require('playwright/lib/server/page.js');7const { ElementHandle } = require('playwright/lib/server/dom.js');8const { Frame } = require('playwright/lib/server/frames.js');9const { mountSuspensePrimaryChildren } = require('playwright/lib/server/supplements/recorder/recorderSupplement.js');10const { Page } = require('playwright/lib/server/page.js');11const { ElementHandle } = require('playwright/lib/server/dom.js');12const { Frame } = require('playwright/lib/server/frames.js');13const { mountSuspensePrimaryChildren } = require('playwright/lib/server/supplements/recorder/recorderSupplement.js');14const { Page } = require('playwright/lib/server/page.js');15const { ElementHandle } = require('playwright/lib/server/dom.js');16const { Frame } = require('playwright/lib/server/frames.js');17const { mountSuspensePrimaryChildren } = require('playwright/lib/server/supplements/recorder/recorderSupplement.js');18const { Page } = require('playwright/lib/server/page.js');19const { ElementHandle } = require('playwright/lib/server/dom.js');20const { Frame } = require('playwright/lib/server/frames.js');21const { mountSuspensePrimaryChildren } = require('playwright/lib/server/supplements/recorder/recorderSupplement.js');22const { Page } = require('playwright/lib/server/page.js');23const { ElementHandle } = require('playwright/lib/server/dom.js');24const { Frame } = require('playwright/lib/server/frames.js');

Using AI Code Generation

1const { mountSuspensePrimaryChildren } = require("@playwright/test/lib/server/supplements/dom/suspense");2const { mountSuspenseFallbackChildren } = require("@playwright/test/lib/server/supplements/dom/suspense");3const { unmountSuspenseChildren } = require("@playwright/test/lib/server/supplements/dom/suspense");4const { getPrimaryChildren } = require("@playwright/test/lib/server/supplements/dom/suspense");5const { getFallbackChildren } = require("@playwright/test/lib/server/supplements/dom/suspense");6const { getFallbackContent } = require("@playwright/test/lib/server/supplements/dom/suspense");7const { getPrimaryContent } = require("@playwright/test/lib/server/supplements/dom/suspense");8const { getPrimaryContent } = require("@playwright/test/lib/server/supplements/dom/suspense");9const { getPrimaryContent } = require("@playwright/test/lib/server/supplements/dom/suspense");10const { getPrimaryContent } = require("@playwright/test/lib/server/supplements/dom/suspense");11const { getPrimaryContent } = require("@playwright/test/lib/server/supplements/dom/suspense");12const { getPrimaryContent } = require("@playwright/test/lib/server/supplements/dom/suspense");13const { getPrimaryContent } = require("@playwright/test/lib/server/supplements/dom/suspense");14const { getPrimaryContent } = require("@playwright/test/lib/server/supplements/dom/s

Using AI Code Generation

1import { mountSuspensePrimaryChildren } from 'playwright';2import { render } from 'react-dom';3const App = () => {4  return (5      <Suspense fallback={<div>Loading...</div>}>6  );7};8render(<App />, document.getElementById('root'));9mountSuspensePrimaryChildren(document.getElementById('root'));

Using AI Code Generation

1const { mountSuspensePrimaryChildren } = require('@playwright/test/lib/server/supplements/suspense');2const { Page } = require('@playwright/test/lib/server/page');3const { ElementHandle } = require('@playwright/test/lib/server/dom');4const { Frame } = require('@playwright/test/lib/server/frames');5const { mountSuspensePrimaryChildren } = require('@playwright/test/lib/server/supplements/suspense');6const { Page } = require('@playwright/test/lib/server/page');7const { ElementHandle } = require('@playwright/test/lib/server/dom');8const { Frame } = require('@playwright/test/lib/server/frames');9mountSuspensePrimaryChildren = (frame) => {10    if (frame._page._delegate._suspenseEnabled) {11        frame._page._delegate._suspenseEnabled = false;12        frame._page._delegate._suspensePrimaryChildren = new Map();13        frame._page._delegate._suspensePrimaryChildren.set(frame._id, frame._page._delegate._suspensePrimaryChildren);14    }15}16const { mountSuspensePrimaryChildren } = require('@playwright/test/lib/server/supplements/suspense');17const { Page } = require('@playwright/test/lib/server/page');18const { ElementHandle } = require('@playwright/test/lib/server/dom');19const { Frame } = require('@playwright/test/lib/server/frames');20mountSuspensePrimaryChildren = (frame) => {21    if (frame._page._delegate._suspenseEnabled) {22        frame._page._delegate._suspenseEnabled = false;23        frame._page._delegate._suspensePrimaryChildren = new Map();24        frame._page._delegate._suspensePrimaryChildren.set(frame._id, frame._page._delegate._suspensePrimaryChildren);25    }26}27const { mountSuspensePrimaryChildren } = require('@playwright/test/lib/server/supplements/suspense');28const { Page } = require('@playwright/test/lib/server/page');29const { ElementHandle } = require('@playwright/test/lib/server/dom');30const { Frame } = require('@playwright/test/lib/server/frames');31mountSuspensePrimaryChildren = (frame) => {32    if (frame._page._delegate._suspenseEnabled) {

Playwright tutorial

LambdaTest’s Playwright tutorial will give you a broader idea about the Playwright automation framework, its unique features, and use cases with examples to exceed your understanding of Playwright testing. This tutorial will give A to Z guidance, from installing the Playwright framework to some best practices and advanced concepts.

Chapters:

What is Playwright : Playwright is comparatively new but has gained good popularity. Get to know some history of the Playwright with some interesting facts connected with it.
How To Install Playwright : Learn in detail about what basic configuration and dependencies are required for installing Playwright and run a test. Get a step-by-step direction for installing the Playwright automation framework.
Playwright Futuristic Features: Launched in 2020, Playwright gained huge popularity quickly because of some obliging features such as Playwright Test Generator and Inspector, Playwright Reporter, Playwright auto-waiting mechanism and etc. Read up on those features to master Playwright testing.
What is Component Testing: Component testing in Playwright is a unique feature that allows a tester to test a single component of a web application without integrating them with other elements. Learn how to perform Component testing on the Playwright automation framework.
Inputs And Buttons In Playwright: Every website has Input boxes and buttons; learn about testing inputs and buttons with different scenarios and examples.
Functions and Selectors in Playwright: Learn how to launch the Chromium browser with Playwright. Also, gain a better understanding of some important functions like “BrowserContext,” which allows you to run multiple browser sessions, and “newPage” which interacts with a page.
Handling Alerts and Dropdowns in Playwright : Playwright interact with different types of alerts and pop-ups, such as simple, confirmation, and prompt, and different types of dropdowns, such as single selector and multi-selector get your hands-on with handling alerts and dropdown in Playright testing.
Playwright vs Puppeteer: Get to know about the difference between two testing frameworks and how they are different than one another, which browsers they support, and what features they provide.
Run Playwright Tests on LambdaTest: Playwright testing with LambdaTest leverages test performance to the utmost. You can run multiple Playwright tests in Parallel with the LammbdaTest test cloud. Get a step-by-step guide to run your Playwright test on the LambdaTest platform.
Playwright Python Tutorial: Playwright automation framework support all major languages such as Python, JavaScript, TypeScript, .NET and etc. However, there are various advantages to Python end-to-end testing with Playwright because of its versatile utility. Get the hang of Playwright python testing with this chapter.
Playwright End To End Testing Tutorial: Get your hands on with Playwright end-to-end testing and learn to use some exciting features such as TraceViewer, Debugging, Networking, Component testing, Visual testing, and many more.
Playwright Video Tutorial: Watch the video tutorials on Playwright testing from experts and get a consecutive in-depth explanation of Playwright automation testing.