How to use updateImperativeHandle method in Playwright Internal

Best JavaScript code snippet using playwright-internal

ReactFiberHooks.new.js

Source:ReactFiberHooks.new.js Github

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...1972 deps ,1973 ) {1974 currentHookNameInDev = 'useImperativeHandle';1975 updateHookTypesDev();1976 return updateImperativeHandle(ref, create, deps);1977 },1978 useLayoutEffect(1979 create ,1980 deps ,1981 ) {1982 currentHookNameInDev = 'useLayoutEffect';1983 updateHookTypesDev();1984 return updateLayoutEffect(create, deps);1985 },1986 useMemo (create , deps ) {1987 currentHookNameInDev = 'useMemo';1988 updateHookTypesDev();1989 const prevDispatcher = ReactCurrentDispatcher.current;1990 ReactCurrentDispatcher.current = InvalidNestedHooksDispatcherOnUpdateInDEV;1991 try {1992 return updateMemo(create, deps);1993 } finally {1994 ReactCurrentDispatcher.current = prevDispatcher;1995 }1996 },1997 useReducer (1998 reducer ,1999 initialArg ,2000 init ,2001 ) {2002 currentHookNameInDev = 'useReducer';2003 updateHookTypesDev();2004 const prevDispatcher = ReactCurrentDispatcher.current;2005 ReactCurrentDispatcher.current = InvalidNestedHooksDispatcherOnUpdateInDEV;2006 try {2007 return updateReducer(reducer, initialArg, init);2008 } finally {2009 ReactCurrentDispatcher.current = prevDispatcher;2010 }2011 },2012 useRef (initialValue ) {2013 currentHookNameInDev = 'useRef';2014 updateHookTypesDev();2015 return updateRef(initialValue);2016 },2017 useState (2018 initialState ,2019 ) {2020 currentHookNameInDev = 'useState';2021 updateHookTypesDev();2022 const prevDispatcher = ReactCurrentDispatcher.current;2023 ReactCurrentDispatcher.current = InvalidNestedHooksDispatcherOnUpdateInDEV;2024 try {2025 return updateState(initialState);2026 } finally {2027 ReactCurrentDispatcher.current = prevDispatcher;2028 }2029 },2030 useDebugValue (value , formatterFn ) {2031 currentHookNameInDev = 'useDebugValue';2032 updateHookTypesDev();2033 return updateDebugValue(value, formatterFn);2034 },2035 useDeferredValue (value ) {2036 currentHookNameInDev = 'useDeferredValue';2037 updateHookTypesDev();2038 return updateDeferredValue(value);2039 },2040 useTransition() {2041 currentHookNameInDev = 'useTransition';2042 updateHookTypesDev();2043 return updateTransition();2044 },2045 useMutableSource (2046 source ,2047 getSnapshot ,2048 subscribe ,2049 ) {2050 currentHookNameInDev = 'useMutableSource';2051 updateHookTypesDev();2052 return updateMutableSource(source, getSnapshot, subscribe);2053 },2054 useOpaqueIdentifier() {2055 currentHookNameInDev = 'useOpaqueIdentifier';2056 updateHookTypesDev();2057 return updateOpaqueIdentifier();2058 },2059 unstable_isNewReconciler: enableNewReconciler,2060 };2061 HooksDispatcherOnRerenderInDEV = {2062 readContext (2063 context ,2064 observedBits ,2065 ) {2066 return readContext(context, observedBits);2067 },2068 useCallback (callback , deps ) {2069 currentHookNameInDev = 'useCallback';2070 updateHookTypesDev();2071 return updateCallback(callback, deps);2072 },2073 useContext (2074 context ,2075 observedBits ,2076 ) {2077 currentHookNameInDev = 'useContext';2078 updateHookTypesDev();2079 return readContext(context, observedBits);2080 },2081 useEffect(2082 create ,2083 deps ,2084 ) {2085 currentHookNameInDev = 'useEffect';2086 updateHookTypesDev();2087 return updateEffect(create, deps);2088 },2089 useImperativeHandle (2090 ref ,2091 create ,2092 deps ,2093 ) {2094 currentHookNameInDev = 'useImperativeHandle';2095 updateHookTypesDev();2096 return updateImperativeHandle(ref, create, deps);2097 },2098 useLayoutEffect(2099 create ,2100 deps ,2101 ) {2102 currentHookNameInDev = 'useLayoutEffect';2103 updateHookTypesDev();2104 return updateLayoutEffect(create, deps);2105 },2106 useMemo (create , deps ) {2107 currentHookNameInDev = 'useMemo';2108 updateHookTypesDev();2109 const prevDispatcher = ReactCurrentDispatcher.current;2110 ReactCurrentDispatcher.current = InvalidNestedHooksDispatcherOnRerenderInDEV;2111 try {2112 return updateMemo(create, deps);2113 } finally {2114 ReactCurrentDispatcher.current = prevDispatcher;2115 }2116 },2117 useReducer (2118 reducer ,2119 initialArg ,2120 init ,2121 ) {2122 currentHookNameInDev = 'useReducer';2123 updateHookTypesDev();2124 const prevDispatcher = ReactCurrentDispatcher.current;2125 ReactCurrentDispatcher.current = InvalidNestedHooksDispatcherOnRerenderInDEV;2126 try {2127 return rerenderReducer(reducer, initialArg, init);2128 } finally {2129 ReactCurrentDispatcher.current = prevDispatcher;2130 }2131 },2132 useRef (initialValue ) {2133 currentHookNameInDev = 'useRef';2134 updateHookTypesDev();2135 return updateRef(initialValue);2136 },2137 useState (2138 initialState ,2139 ) {2140 currentHookNameInDev = 'useState';2141 updateHookTypesDev();2142 const prevDispatcher = ReactCurrentDispatcher.current;2143 ReactCurrentDispatcher.current = InvalidNestedHooksDispatcherOnRerenderInDEV;2144 try {2145 return rerenderState(initialState);2146 } finally {2147 ReactCurrentDispatcher.current = prevDispatcher;2148 }2149 },2150 useDebugValue (value , formatterFn ) {2151 currentHookNameInDev = 'useDebugValue';2152 updateHookTypesDev();2153 return updateDebugValue(value, formatterFn);2154 },2155 useDeferredValue (value ) {2156 currentHookNameInDev = 'useDeferredValue';2157 updateHookTypesDev();2158 return rerenderDeferredValue(value);2159 },2160 useTransition() {2161 currentHookNameInDev = 'useTransition';2162 updateHookTypesDev();2163 return rerenderTransition();2164 },2165 useMutableSource (2166 source ,2167 getSnapshot ,2168 subscribe ,2169 ) {2170 currentHookNameInDev = 'useMutableSource';2171 updateHookTypesDev();2172 return updateMutableSource(source, getSnapshot, subscribe);2173 },2174 useOpaqueIdentifier() {2175 currentHookNameInDev = 'useOpaqueIdentifier';2176 updateHookTypesDev();2177 return rerenderOpaqueIdentifier();2178 },2179 unstable_isNewReconciler: enableNewReconciler,2180 };2181 InvalidNestedHooksDispatcherOnMountInDEV = {2182 readContext (2183 context ,2184 observedBits ,2185 ) {2186 warnInvalidContextAccess();2187 return readContext(context, observedBits);2188 },2189 useCallback (callback , deps ) {2190 currentHookNameInDev = 'useCallback';2191 warnInvalidHookAccess();2192 mountHookTypesDev();2193 return mountCallback(callback, deps);2194 },2195 useContext (2196 context ,2197 observedBits ,2198 ) {2199 currentHookNameInDev = 'useContext';2200 warnInvalidHookAccess();2201 mountHookTypesDev();2202 return readContext(context, observedBits);2203 },2204 useEffect(2205 create ,2206 deps ,2207 ) {2208 currentHookNameInDev = 'useEffect';2209 warnInvalidHookAccess();2210 mountHookTypesDev();2211 return mountEffect(create, deps);2212 },2213 useImperativeHandle (2214 ref ,2215 create ,2216 deps ,2217 ) {2218 currentHookNameInDev = 'useImperativeHandle';2219 warnInvalidHookAccess();2220 mountHookTypesDev();2221 return mountImperativeHandle(ref, create, deps);2222 },2223 useLayoutEffect(2224 create ,2225 deps ,2226 ) {2227 currentHookNameInDev = 'useLayoutEffect';2228 warnInvalidHookAccess();2229 mountHookTypesDev();2230 return mountLayoutEffect(create, deps);2231 },2232 useMemo (create , deps ) {2233 currentHookNameInDev = 'useMemo';2234 warnInvalidHookAccess();2235 mountHookTypesDev();2236 const prevDispatcher = ReactCurrentDispatcher.current;2237 ReactCurrentDispatcher.current = InvalidNestedHooksDispatcherOnMountInDEV;2238 try {2239 return mountMemo(create, deps);2240 } finally {2241 ReactCurrentDispatcher.current = prevDispatcher;2242 }2243 },2244 useReducer (2245 reducer ,2246 initialArg ,2247 init ,2248 ) {2249 currentHookNameInDev = 'useReducer';2250 warnInvalidHookAccess();2251 mountHookTypesDev();2252 const prevDispatcher = ReactCurrentDispatcher.current;2253 ReactCurrentDispatcher.current = InvalidNestedHooksDispatcherOnMountInDEV;2254 try {2255 return mountReducer(reducer, initialArg, init);2256 } finally {2257 ReactCurrentDispatcher.current = prevDispatcher;2258 }2259 },2260 useRef (initialValue ) {2261 currentHookNameInDev = 'useRef';2262 warnInvalidHookAccess();2263 mountHookTypesDev();2264 return mountRef(initialValue);2265 },2266 useState (2267 initialState ,2268 ) {2269 currentHookNameInDev = 'useState';2270 warnInvalidHookAccess();2271 mountHookTypesDev();2272 const prevDispatcher = ReactCurrentDispatcher.current;2273 ReactCurrentDispatcher.current = InvalidNestedHooksDispatcherOnMountInDEV;2274 try {2275 return mountState(initialState);2276 } finally {2277 ReactCurrentDispatcher.current = prevDispatcher;2278 }2279 },2280 useDebugValue (value , formatterFn ) {2281 currentHookNameInDev = 'useDebugValue';2282 warnInvalidHookAccess();2283 mountHookTypesDev();2284 return mountDebugValue(value, formatterFn);2285 },2286 useDeferredValue (value ) {2287 currentHookNameInDev = 'useDeferredValue';2288 warnInvalidHookAccess();2289 mountHookTypesDev();2290 return mountDeferredValue(value);2291 },2292 useTransition() {2293 currentHookNameInDev = 'useTransition';2294 warnInvalidHookAccess();2295 mountHookTypesDev();2296 return mountTransition();2297 },2298 useMutableSource (2299 source ,2300 getSnapshot ,2301 subscribe ,2302 ) {2303 currentHookNameInDev = 'useMutableSource';2304 warnInvalidHookAccess();2305 mountHookTypesDev();2306 return mountMutableSource(source, getSnapshot, subscribe);2307 },2308 useOpaqueIdentifier() {2309 currentHookNameInDev = 'useOpaqueIdentifier';2310 warnInvalidHookAccess();2311 mountHookTypesDev();2312 return mountOpaqueIdentifier();2313 },2314 unstable_isNewReconciler: enableNewReconciler,2315 };2316 InvalidNestedHooksDispatcherOnUpdateInDEV = {2317 readContext (2318 context ,2319 observedBits ,2320 ) {2321 warnInvalidContextAccess();2322 return readContext(context, observedBits);2323 },2324 useCallback (callback , deps ) {2325 currentHookNameInDev = 'useCallback';2326 warnInvalidHookAccess();2327 updateHookTypesDev();2328 return updateCallback(callback, deps);2329 },2330 useContext (2331 context ,2332 observedBits ,2333 ) {2334 currentHookNameInDev = 'useContext';2335 warnInvalidHookAccess();2336 updateHookTypesDev();2337 return readContext(context, observedBits);2338 },2339 useEffect(2340 create ,2341 deps ,2342 ) {2343 currentHookNameInDev = 'useEffect';2344 warnInvalidHookAccess();2345 updateHookTypesDev();2346 return updateEffect(create, deps);2347 },2348 useImperativeHandle (2349 ref ,2350 create ,2351 deps ,2352 ) {2353 currentHookNameInDev = 'useImperativeHandle';2354 warnInvalidHookAccess();2355 updateHookTypesDev();2356 return updateImperativeHandle(ref, create, deps);2357 },2358 useLayoutEffect(2359 create ,2360 deps ,2361 ) {2362 currentHookNameInDev = 'useLayoutEffect';2363 warnInvalidHookAccess();2364 updateHookTypesDev();2365 return updateLayoutEffect(create, deps);2366 },2367 useMemo (create , deps ) {2368 currentHookNameInDev = 'useMemo';2369 warnInvalidHookAccess();2370 updateHookTypesDev();2371 const prevDispatcher = ReactCurrentDispatcher.current;2372 ReactCurrentDispatcher.current = InvalidNestedHooksDispatcherOnUpdateInDEV;2373 try {2374 return updateMemo(create, deps);2375 } finally {2376 ReactCurrentDispatcher.current = prevDispatcher;2377 }2378 },2379 useReducer (2380 reducer ,2381 initialArg ,2382 init ,2383 ) {2384 currentHookNameInDev = 'useReducer';2385 warnInvalidHookAccess();2386 updateHookTypesDev();2387 const prevDispatcher = ReactCurrentDispatcher.current;2388 ReactCurrentDispatcher.current = InvalidNestedHooksDispatcherOnUpdateInDEV;2389 try {2390 return updateReducer(reducer, initialArg, init);2391 } finally {2392 ReactCurrentDispatcher.current = prevDispatcher;2393 }2394 },2395 useRef (initialValue ) {2396 currentHookNameInDev = 'useRef';2397 warnInvalidHookAccess();2398 updateHookTypesDev();2399 return updateRef(initialValue);2400 },2401 useState (2402 initialState ,2403 ) {2404 currentHookNameInDev = 'useState';2405 warnInvalidHookAccess();2406 updateHookTypesDev();2407 const prevDispatcher = ReactCurrentDispatcher.current;2408 ReactCurrentDispatcher.current = InvalidNestedHooksDispatcherOnUpdateInDEV;2409 try {2410 return updateState(initialState);2411 } finally {2412 ReactCurrentDispatcher.current = prevDispatcher;2413 }2414 },2415 useDebugValue (value , formatterFn ) {2416 currentHookNameInDev = 'useDebugValue';2417 warnInvalidHookAccess();2418 updateHookTypesDev();2419 return updateDebugValue(value, formatterFn);2420 },2421 useDeferredValue (value ) {2422 currentHookNameInDev = 'useDeferredValue';2423 warnInvalidHookAccess();2424 updateHookTypesDev();2425 return updateDeferredValue(value);2426 },2427 useTransition() {2428 currentHookNameInDev = 'useTransition';2429 warnInvalidHookAccess();2430 updateHookTypesDev();2431 return updateTransition();2432 },2433 useMutableSource (2434 source ,2435 getSnapshot ,2436 subscribe ,2437 ) {2438 currentHookNameInDev = 'useMutableSource';2439 warnInvalidHookAccess();2440 updateHookTypesDev();2441 return updateMutableSource(source, getSnapshot, subscribe);2442 },2443 useOpaqueIdentifier() {2444 currentHookNameInDev = 'useOpaqueIdentifier';2445 warnInvalidHookAccess();2446 updateHookTypesDev();2447 return updateOpaqueIdentifier();2448 },2449 unstable_isNewReconciler: enableNewReconciler,2450 };2451 InvalidNestedHooksDispatcherOnRerenderInDEV = {2452 readContext (2453 context ,2454 observedBits ,2455 ) {2456 warnInvalidContextAccess();2457 return readContext(context, observedBits);2458 },2459 useCallback (callback , deps ) {2460 currentHookNameInDev = 'useCallback';2461 warnInvalidHookAccess();2462 updateHookTypesDev();2463 return updateCallback(callback, deps);2464 },2465 useContext (2466 context ,2467 observedBits ,2468 ) {2469 currentHookNameInDev = 'useContext';2470 warnInvalidHookAccess();2471 updateHookTypesDev();2472 return readContext(context, observedBits);2473 },2474 useEffect(2475 create ,2476 deps ,2477 ) {2478 currentHookNameInDev = 'useEffect';2479 warnInvalidHookAccess();2480 updateHookTypesDev();2481 return updateEffect(create, deps);2482 },2483 useImperativeHandle (2484 ref ,2485 create ,2486 deps ,2487 ) {2488 currentHookNameInDev = 'useImperativeHandle';2489 warnInvalidHookAccess();2490 updateHookTypesDev();2491 return updateImperativeHandle(ref, create, deps);2492 },2493 useLayoutEffect(2494 create ,2495 deps ,2496 ) {2497 currentHookNameInDev = 'useLayoutEffect';2498 warnInvalidHookAccess();2499 updateHookTypesDev();2500 return updateLayoutEffect(create, deps);2501 },2502 useMemo (create , deps ) {2503 currentHookNameInDev = 'useMemo';2504 warnInvalidHookAccess();2505 updateHookTypesDev();...

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ReactFiberHooks.old.js

Source:ReactFiberHooks.old.js Github

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...1932 deps ,1933 ) {1934 currentHookNameInDev = 'useImperativeHandle';1935 updateHookTypesDev();1936 return updateImperativeHandle(ref, create, deps);1937 },1938 useLayoutEffect(1939 create ,1940 deps ,1941 ) {1942 currentHookNameInDev = 'useLayoutEffect';1943 updateHookTypesDev();1944 return updateLayoutEffect(create, deps);1945 },1946 useMemo (create , deps ) {1947 currentHookNameInDev = 'useMemo';1948 updateHookTypesDev();1949 const prevDispatcher = ReactCurrentDispatcher.current;1950 ReactCurrentDispatcher.current = InvalidNestedHooksDispatcherOnUpdateInDEV;1951 try {1952 return updateMemo(create, deps);1953 } finally {1954 ReactCurrentDispatcher.current = prevDispatcher;1955 }1956 },1957 useReducer (1958 reducer ,1959 initialArg ,1960 init ,1961 ) {1962 currentHookNameInDev = 'useReducer';1963 updateHookTypesDev();1964 const prevDispatcher = ReactCurrentDispatcher.current;1965 ReactCurrentDispatcher.current = InvalidNestedHooksDispatcherOnUpdateInDEV;1966 try {1967 return updateReducer(reducer, initialArg, init);1968 } finally {1969 ReactCurrentDispatcher.current = prevDispatcher;1970 }1971 },1972 useRef (initialValue ) {1973 currentHookNameInDev = 'useRef';1974 updateHookTypesDev();1975 return updateRef(initialValue);1976 },1977 useState (1978 initialState ,1979 ) {1980 currentHookNameInDev = 'useState';1981 updateHookTypesDev();1982 const prevDispatcher = ReactCurrentDispatcher.current;1983 ReactCurrentDispatcher.current = InvalidNestedHooksDispatcherOnUpdateInDEV;1984 try {1985 return updateState(initialState);1986 } finally {1987 ReactCurrentDispatcher.current = prevDispatcher;1988 }1989 },1990 useDebugValue (value , formatterFn ) {1991 currentHookNameInDev = 'useDebugValue';1992 updateHookTypesDev();1993 return updateDebugValue(value, formatterFn);1994 },1995 useDeferredValue (value ) {1996 currentHookNameInDev = 'useDeferredValue';1997 updateHookTypesDev();1998 return updateDeferredValue(value);1999 },2000 useTransition() {2001 currentHookNameInDev = 'useTransition';2002 updateHookTypesDev();2003 return updateTransition();2004 },2005 useMutableSource (2006 source ,2007 getSnapshot ,2008 subscribe ,2009 ) {2010 currentHookNameInDev = 'useMutableSource';2011 updateHookTypesDev();2012 return updateMutableSource(source, getSnapshot, subscribe);2013 },2014 useOpaqueIdentifier() {2015 currentHookNameInDev = 'useOpaqueIdentifier';2016 updateHookTypesDev();2017 return updateOpaqueIdentifier();2018 },2019 unstable_isNewReconciler: enableNewReconciler,2020 };2021 HooksDispatcherOnRerenderInDEV = {2022 readContext (2023 context ,2024 observedBits ,2025 ) {2026 return readContext(context, observedBits);2027 },2028 useCallback (callback , deps ) {2029 currentHookNameInDev = 'useCallback';2030 updateHookTypesDev();2031 return updateCallback(callback, deps);2032 },2033 useContext (2034 context ,2035 observedBits ,2036 ) {2037 currentHookNameInDev = 'useContext';2038 updateHookTypesDev();2039 return readContext(context, observedBits);2040 },2041 useEffect(2042 create ,2043 deps ,2044 ) {2045 currentHookNameInDev = 'useEffect';2046 updateHookTypesDev();2047 return updateEffect(create, deps);2048 },2049 useImperativeHandle (2050 ref ,2051 create ,2052 deps ,2053 ) {2054 currentHookNameInDev = 'useImperativeHandle';2055 updateHookTypesDev();2056 return updateImperativeHandle(ref, create, deps);2057 },2058 useLayoutEffect(2059 create ,2060 deps ,2061 ) {2062 currentHookNameInDev = 'useLayoutEffect';2063 updateHookTypesDev();2064 return updateLayoutEffect(create, deps);2065 },2066 useMemo (create , deps ) {2067 currentHookNameInDev = 'useMemo';2068 updateHookTypesDev();2069 const prevDispatcher = ReactCurrentDispatcher.current;2070 ReactCurrentDispatcher.current = InvalidNestedHooksDispatcherOnRerenderInDEV;2071 try {2072 return updateMemo(create, deps);2073 } finally {2074 ReactCurrentDispatcher.current = prevDispatcher;2075 }2076 },2077 useReducer (2078 reducer ,2079 initialArg ,2080 init ,2081 ) {2082 currentHookNameInDev = 'useReducer';2083 updateHookTypesDev();2084 const prevDispatcher = ReactCurrentDispatcher.current;2085 ReactCurrentDispatcher.current = InvalidNestedHooksDispatcherOnRerenderInDEV;2086 try {2087 return rerenderReducer(reducer, initialArg, init);2088 } finally {2089 ReactCurrentDispatcher.current = prevDispatcher;2090 }2091 },2092 useRef (initialValue ) {2093 currentHookNameInDev = 'useRef';2094 updateHookTypesDev();2095 return updateRef(initialValue);2096 },2097 useState (2098 initialState ,2099 ) {2100 currentHookNameInDev = 'useState';2101 updateHookTypesDev();2102 const prevDispatcher = ReactCurrentDispatcher.current;2103 ReactCurrentDispatcher.current = InvalidNestedHooksDispatcherOnRerenderInDEV;2104 try {2105 return rerenderState(initialState);2106 } finally {2107 ReactCurrentDispatcher.current = prevDispatcher;2108 }2109 },2110 useDebugValue (value , formatterFn ) {2111 currentHookNameInDev = 'useDebugValue';2112 updateHookTypesDev();2113 return updateDebugValue(value, formatterFn);2114 },2115 useDeferredValue (value ) {2116 currentHookNameInDev = 'useDeferredValue';2117 updateHookTypesDev();2118 return rerenderDeferredValue(value);2119 },2120 useTransition() {2121 currentHookNameInDev = 'useTransition';2122 updateHookTypesDev();2123 return rerenderTransition();2124 },2125 useMutableSource (2126 source ,2127 getSnapshot ,2128 subscribe ,2129 ) {2130 currentHookNameInDev = 'useMutableSource';2131 updateHookTypesDev();2132 return updateMutableSource(source, getSnapshot, subscribe);2133 },2134 useOpaqueIdentifier() {2135 currentHookNameInDev = 'useOpaqueIdentifier';2136 updateHookTypesDev();2137 return rerenderOpaqueIdentifier();2138 },2139 unstable_isNewReconciler: enableNewReconciler,2140 };2141 InvalidNestedHooksDispatcherOnMountInDEV = {2142 readContext (2143 context ,2144 observedBits ,2145 ) {2146 warnInvalidContextAccess();2147 return readContext(context, observedBits);2148 },2149 useCallback (callback , deps ) {2150 currentHookNameInDev = 'useCallback';2151 warnInvalidHookAccess();2152 mountHookTypesDev();2153 return mountCallback(callback, deps);2154 },2155 useContext (2156 context ,2157 observedBits ,2158 ) {2159 currentHookNameInDev = 'useContext';2160 warnInvalidHookAccess();2161 mountHookTypesDev();2162 return readContext(context, observedBits);2163 },2164 useEffect(2165 create ,2166 deps ,2167 ) {2168 currentHookNameInDev = 'useEffect';2169 warnInvalidHookAccess();2170 mountHookTypesDev();2171 return mountEffect(create, deps);2172 },2173 useImperativeHandle (2174 ref ,2175 create ,2176 deps ,2177 ) {2178 currentHookNameInDev = 'useImperativeHandle';2179 warnInvalidHookAccess();2180 mountHookTypesDev();2181 return mountImperativeHandle(ref, create, deps);2182 },2183 useLayoutEffect(2184 create ,2185 deps ,2186 ) {2187 currentHookNameInDev = 'useLayoutEffect';2188 warnInvalidHookAccess();2189 mountHookTypesDev();2190 return mountLayoutEffect(create, deps);2191 },2192 useMemo (create , deps ) {2193 currentHookNameInDev = 'useMemo';2194 warnInvalidHookAccess();2195 mountHookTypesDev();2196 const prevDispatcher = ReactCurrentDispatcher.current;2197 ReactCurrentDispatcher.current = InvalidNestedHooksDispatcherOnMountInDEV;2198 try {2199 return mountMemo(create, deps);2200 } finally {2201 ReactCurrentDispatcher.current = prevDispatcher;2202 }2203 },2204 useReducer (2205 reducer ,2206 initialArg ,2207 init ,2208 ) {2209 currentHookNameInDev = 'useReducer';2210 warnInvalidHookAccess();2211 mountHookTypesDev();2212 const prevDispatcher = ReactCurrentDispatcher.current;2213 ReactCurrentDispatcher.current = InvalidNestedHooksDispatcherOnMountInDEV;2214 try {2215 return mountReducer(reducer, initialArg, init);2216 } finally {2217 ReactCurrentDispatcher.current = prevDispatcher;2218 }2219 },2220 useRef (initialValue ) {2221 currentHookNameInDev = 'useRef';2222 warnInvalidHookAccess();2223 mountHookTypesDev();2224 return mountRef(initialValue);2225 },2226 useState (2227 initialState ,2228 ) {2229 currentHookNameInDev = 'useState';2230 warnInvalidHookAccess();2231 mountHookTypesDev();2232 const prevDispatcher = ReactCurrentDispatcher.current;2233 ReactCurrentDispatcher.current = InvalidNestedHooksDispatcherOnMountInDEV;2234 try {2235 return mountState(initialState);2236 } finally {2237 ReactCurrentDispatcher.current = prevDispatcher;2238 }2239 },2240 useDebugValue (value , formatterFn ) {2241 currentHookNameInDev = 'useDebugValue';2242 warnInvalidHookAccess();2243 mountHookTypesDev();2244 return mountDebugValue(value, formatterFn);2245 },2246 useDeferredValue (value ) {2247 currentHookNameInDev = 'useDeferredValue';2248 warnInvalidHookAccess();2249 mountHookTypesDev();2250 return mountDeferredValue(value);2251 },2252 useTransition() {2253 currentHookNameInDev = 'useTransition';2254 warnInvalidHookAccess();2255 mountHookTypesDev();2256 return mountTransition();2257 },2258 useMutableSource (2259 source ,2260 getSnapshot ,2261 subscribe ,2262 ) {2263 currentHookNameInDev = 'useMutableSource';2264 warnInvalidHookAccess();2265 mountHookTypesDev();2266 return mountMutableSource(source, getSnapshot, subscribe);2267 },2268 useOpaqueIdentifier() {2269 currentHookNameInDev = 'useOpaqueIdentifier';2270 warnInvalidHookAccess();2271 mountHookTypesDev();2272 return mountOpaqueIdentifier();2273 },2274 unstable_isNewReconciler: enableNewReconciler,2275 };2276 InvalidNestedHooksDispatcherOnUpdateInDEV = {2277 readContext (2278 context ,2279 observedBits ,2280 ) {2281 warnInvalidContextAccess();2282 return readContext(context, observedBits);2283 },2284 useCallback (callback , deps ) {2285 currentHookNameInDev = 'useCallback';2286 warnInvalidHookAccess();2287 updateHookTypesDev();2288 return updateCallback(callback, deps);2289 },2290 useContext (2291 context ,2292 observedBits ,2293 ) {2294 currentHookNameInDev = 'useContext';2295 warnInvalidHookAccess();2296 updateHookTypesDev();2297 return readContext(context, observedBits);2298 },2299 useEffect(2300 create ,2301 deps ,2302 ) {2303 currentHookNameInDev = 'useEffect';2304 warnInvalidHookAccess();2305 updateHookTypesDev();2306 return updateEffect(create, deps);2307 },2308 useImperativeHandle (2309 ref ,2310 create ,2311 deps ,2312 ) {2313 currentHookNameInDev = 'useImperativeHandle';2314 warnInvalidHookAccess();2315 updateHookTypesDev();2316 return updateImperativeHandle(ref, create, deps);2317 },2318 useLayoutEffect(2319 create ,2320 deps ,2321 ) {2322 currentHookNameInDev = 'useLayoutEffect';2323 warnInvalidHookAccess();2324 updateHookTypesDev();2325 return updateLayoutEffect(create, deps);2326 },2327 useMemo (create , deps ) {2328 currentHookNameInDev = 'useMemo';2329 warnInvalidHookAccess();2330 updateHookTypesDev();2331 const prevDispatcher = ReactCurrentDispatcher.current;2332 ReactCurrentDispatcher.current = InvalidNestedHooksDispatcherOnUpdateInDEV;2333 try {2334 return updateMemo(create, deps);2335 } finally {2336 ReactCurrentDispatcher.current = prevDispatcher;2337 }2338 },2339 useReducer (2340 reducer ,2341 initialArg ,2342 init ,2343 ) {2344 currentHookNameInDev = 'useReducer';2345 warnInvalidHookAccess();2346 updateHookTypesDev();2347 const prevDispatcher = ReactCurrentDispatcher.current;2348 ReactCurrentDispatcher.current = InvalidNestedHooksDispatcherOnUpdateInDEV;2349 try {2350 return updateReducer(reducer, initialArg, init);2351 } finally {2352 ReactCurrentDispatcher.current = prevDispatcher;2353 }2354 },2355 useRef (initialValue ) {2356 currentHookNameInDev = 'useRef';2357 warnInvalidHookAccess();2358 updateHookTypesDev();2359 return updateRef(initialValue);2360 },2361 useState (2362 initialState ,2363 ) {2364 currentHookNameInDev = 'useState';2365 warnInvalidHookAccess();2366 updateHookTypesDev();2367 const prevDispatcher = ReactCurrentDispatcher.current;2368 ReactCurrentDispatcher.current = InvalidNestedHooksDispatcherOnUpdateInDEV;2369 try {2370 return updateState(initialState);2371 } finally {2372 ReactCurrentDispatcher.current = prevDispatcher;2373 }2374 },2375 useDebugValue (value , formatterFn ) {2376 currentHookNameInDev = 'useDebugValue';2377 warnInvalidHookAccess();2378 updateHookTypesDev();2379 return updateDebugValue(value, formatterFn);2380 },2381 useDeferredValue (value ) {2382 currentHookNameInDev = 'useDeferredValue';2383 warnInvalidHookAccess();2384 updateHookTypesDev();2385 return updateDeferredValue(value);2386 },2387 useTransition() {2388 currentHookNameInDev = 'useTransition';2389 warnInvalidHookAccess();2390 updateHookTypesDev();2391 return updateTransition();2392 },2393 useMutableSource (2394 source ,2395 getSnapshot ,2396 subscribe ,2397 ) {2398 currentHookNameInDev = 'useMutableSource';2399 warnInvalidHookAccess();2400 updateHookTypesDev();2401 return updateMutableSource(source, getSnapshot, subscribe);2402 },2403 useOpaqueIdentifier() {2404 currentHookNameInDev = 'useOpaqueIdentifier';2405 warnInvalidHookAccess();2406 updateHookTypesDev();2407 return updateOpaqueIdentifier();2408 },2409 unstable_isNewReconciler: enableNewReconciler,2410 };2411 InvalidNestedHooksDispatcherOnRerenderInDEV = {2412 readContext (2413 context ,2414 observedBits ,2415 ) {2416 warnInvalidContextAccess();2417 return readContext(context, observedBits);2418 },2419 useCallback (callback , deps ) {2420 currentHookNameInDev = 'useCallback';2421 warnInvalidHookAccess();2422 updateHookTypesDev();2423 return updateCallback(callback, deps);2424 },2425 useContext (2426 context ,2427 observedBits ,2428 ) {2429 currentHookNameInDev = 'useContext';2430 warnInvalidHookAccess();2431 updateHookTypesDev();2432 return readContext(context, observedBits);2433 },2434 useEffect(2435 create ,2436 deps ,2437 ) {2438 currentHookNameInDev = 'useEffect';2439 warnInvalidHookAccess();2440 updateHookTypesDev();2441 return updateEffect(create, deps);2442 },2443 useImperativeHandle (2444 ref ,2445 create ,2446 deps ,2447 ) {2448 currentHookNameInDev = 'useImperativeHandle';2449 warnInvalidHookAccess();2450 updateHookTypesDev();2451 return updateImperativeHandle(ref, create, deps);2452 },2453 useLayoutEffect(2454 create ,2455 deps ,2456 ) {2457 currentHookNameInDev = 'useLayoutEffect';2458 warnInvalidHookAccess();2459 updateHookTypesDev();2460 return updateLayoutEffect(create, deps);2461 },2462 useMemo (create , deps ) {2463 currentHookNameInDev = 'useMemo';2464 warnInvalidHookAccess();2465 updateHookTypesDev();...

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ReactFiberHooks.js

Source:ReactFiberHooks.js Github

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1import ReactCurrentDispatcher from "../​react/​ReactCurrentDispatcher";2import { requestEventTime, requestUpdateLane } from "./​ReactFiberWorkLoop";3import {4 Update as UpdateEffect,5 Passive as PassiveEffect,6} from "./​ReactFiberFlags";7import {8 HasEffect as HookHasEffect,9 Layout as HookLayout,10 Passive as HookPassive,11} from "./​ReactHookEffectTags";12/​/​ The work-in-progress fiber. I've named it differently to distinguish it from13/​/​ the work-in-progress hook.14let currentlyRenderingFiber = null;15/​/​ Hooks are stored as a linked list on the fiber's memoizedState field. The16/​/​ current hook list is the list that belongs to the current fiber. The17/​/​ work-in-progress hook list is a new list that will be added to the18/​/​ work-in-progress fiber.19/​/​ Hooks 用链表结构， 存贮在fiber's memoizedState字段20/​/​ Hook | null21let currentHook = null;22/​/​ Hook | null23let workInProgressHook = null;24/​/​ Whether an update was scheduled at any point during the render phase. This25/​/​ does not get reset if we do another render pass; only when we're completely26/​/​ finished evaluating this component. This is an optimization so we know27/​/​ whether we need to clear render phase updates after a throw.28let didScheduleRenderPhaseUpdate = false;29/​/​ Where an update was scheduled only during the current render pass. This30/​/​ gets reset after each attempt.31/​/​ TODO: Maybe there's some way to consolidate this with32/​/​ `didScheduleRenderPhaseUpdate`. Or with `numberOfReRenders`.33let didScheduleRenderPhaseUpdateDuringThisPass = false;34export function renderWithHooks(35 /​/​ null36 current,37 workInProgress,38 /​/​ 这里是函数组件， 其实就是wip.type39 Component,40 /​/​ wip.props41 props,42 /​/​ context43 secondArg,44 nextRenderLanes45) {46 renderLanes = nextRenderLanes;47 currentlyRenderingFiber = workInProgress;48 /​/​ 为何这边就已经清空 memoizedState 和 updateQueue 了?49 workInProgress.memoizedState = null;50 workInProgress.updateQueue = null;51 workInProgress.lanes = NoLanes;52 /​/​ The following should have already been reset53 /​/​ currentHook = null;54 /​/​ workInProgressHook = null;55 /​/​ didScheduleRenderPhaseUpdate = false;56 /​/​ TODO Warn if no hooks are used at all during mount, then some are used during update.57 /​/​ Currently we will identify the update render as a mount because memoizedState === null.58 /​/​ This is tricky because it's valid for certain types of components (e.g. React.lazy)59 /​/​ Using memoizedState to differentiate between mount/​update only works if at least one stateful hook is used.60 /​/​ Non-stateful hooks (e.g. context) don't get added to memoizedState,61 /​/​ so memoizedState would be null during updates and mounts.62 /​/​ Dispatcher 跟useState有关63 ReactCurrentDispatcher.current =64 current === null || current.memoizedState === null65 ? HooksDispatcherOnMount66 : HooksDispatcherOnUpdate;67 /​/​ 直接执行组件函数, 得到一个 jsx object68 let children = Component(props, secondArg);69 /​/​ Check if there was a render phase update70 if (didScheduleRenderPhaseUpdateDuringThisPass) {71 /​/​ Keep rendering in a loop for as long as render phase updates continue to72 /​/​ be scheduled. Use a counter to prevent infinite loops.73 let numberOfReRenders = 0;74 do {75 didScheduleRenderPhaseUpdateDuringThisPass = false;76 invariant(77 numberOfReRenders < RE_RENDER_LIMIT,78 "Too many re-renders. React limits the number of renders to prevent " +79 "an infinite loop."80 );81 numberOfReRenders += 1;82 /​/​ Start over from the beginning of the list83 currentHook = null;84 workInProgressHook = null;85 workInProgress.updateQueue = null;86 ReactCurrentDispatcher.current = HooksDispatcherOnRerender;87 children = Component(props, secondArg);88 } while (didScheduleRenderPhaseUpdateDuringThisPass);89 }90 /​/​ We can assume the previous dispatcher is always this one, since we set it91 /​/​ at the beginning of the render phase and there's no re-entrancy.92 ReactCurrentDispatcher.current = ContextOnlyDispatcher;93 /​/​ This check uses currentHook so that it works the same in DEV and prod bundles.94 /​/​ hookTypesDev could catch more cases (e.g. context) but only in DEV bundles.95 const didRenderTooFewHooks =96 currentHook !== null && currentHook.next !== null;97 renderLanes = NoLanes;98 currentlyRenderingFiber = null;99 currentHook = null;100 workInProgressHook = null;101 didScheduleRenderPhaseUpdate = false;102 invariant(103 !didRenderTooFewHooks,104 "Rendered fewer hooks than expected. This may be caused by an accidental " +105 "early return statement."106 );107 return children;108}109function mountWorkInProgressHook() {110 const hook = {111 memoizedState: null,112 baseState: null,113 baseQueue: null,114 queue: null,115 next: null,116 };117 if (workInProgressHook === null) {118 /​/​ This is the first hook in the list119 currentlyRenderingFiber.memoizedState = workInProgressHook = hook;120 } else {121 /​/​ 一个函数组件里面， 两个以上的hook就走这里， 链起来了~122 /​/​ Append to the end of the list123 workInProgressHook = workInProgressHook.next = hook;124 }125 return workInProgressHook;126}127function createFunctionComponentUpdateQueue() {128 return {129 lastEffect: null,130 };131}132/​**133 * 把tag为 HookHasEffect|HookPassive的effect压入fiber.updateQueue134 */​135function pushEffect(tag, create, destroy, deps) {136 const effect = {137 tag,138 create,139 destroy,140 deps,141 /​/​ Circular142 next: null,143 };144 /​/​ 在我学习的例子里, 这个fiber是App函数组件, 对应的fiber节点是没有updateQueue的(创建的时候就没有初始化)145 let componentUpdateQueue = currentlyRenderingFiber.updateQueue;146 if (componentUpdateQueue === null) {147 componentUpdateQueue = createFunctionComponentUpdateQueue();148 currentlyRenderingFiber.updateQueue = componentUpdateQueue;149 componentUpdateQueue.lastEffect = effect.next = effect;150 } else {151 /​/​ 这里跟updateQueue.shared.pending那个双循环有些不一样,152 const lastEffect = componentUpdateQueue.lastEffect;153 if (lastEffect === null) {154 componentUpdateQueue.lastEffect = effect.next = effect;155 } else {156 const firstEffect = lastEffect.next;157 lastEffect.next = effect;158 effect.next = firstEffect;159 componentUpdateQueue.lastEffect = effect;160 }161 }162 return effect;163}164function mountEffectImpl(fiberFlags, hookFlags, create, deps) {165 const hook = mountWorkInProgressHook();166 const nextDeps = deps === undefined ? null : deps;167 /​/​ 哦吼， 就在这， 这个fiber上有了 PassiveEffect168 /​/​ 在我学的例子里， 对于component App, 其flags在创建的时候169 /​/​ 由 placeSingleChild 函数打上 Placement = 2170 /​/​ 这里再跟 UpdateEffect | PassiveEffect 做合并171 currentlyRenderingFiber.flags |= fiberFlags;172 /​/​ 只是压入updateQueue, **并不执行**173 /​/​ 注意, 这里destroy暂时为undefined, 因为destroy函数是create函数的返回值174 hook.memoizedState = pushEffect(175 HookHasEffect | hookFlags,176 create,177 undefined,178 nextDeps179 );180}181function mountEffect(create, deps) {182 return mountEffectImpl(183 UpdateEffect | PassiveEffect,184 HookPassive,185 create,186 deps187 );188}189function mountState(initialState) {190 /​/​ wip.memoizedState 塞一个空的hook对象，作为hook单链表的起点(?)191 const hook = mountWorkInProgressHook();192 if (typeof initialState === "function") {193 /​/​ useState的初始状态是函数， 这里执行函数， 返回值赋值给initialState194 initialState = initialState();195 }196 hook.memoizedState = hook.baseState = initialState;197 const queue = (hook.queue = {198 pending: null,199 dispatch: null,200 lastRenderedReducer: basicStateReducer,201 lastRenderedState: initialState,202 });203 /​/​ const [a, setA] = useState('a')204 /​/​ setA 就是这里的 dispatchAction205 const dispatch = (queue.dispatch = dispatchAction.bind(206 null,207 currentlyRenderingFiber,208 queue209 ));210 return [hook.memoizedState, dispatch];211}212/​/​ 这函数回头再看213function dispatchAction(fiber, queue, action) {214 const eventTime = requestEventTime();215 const lane = requestUpdateLane(fiber);216 const update = {217 lane,218 action,219 eagerReducer: null,220 eagerState: null,221 next: null,222 };223 /​/​ Append the update to the end of the list.224 const pending = queue.pending;225 if (pending === null) {226 /​/​ This is the first update. Create a circular list.227 update.next = update;228 } else {229 update.next = pending.next;230 pending.next = update;231 }232 queue.pending = update;233 const alternate = fiber.alternate;234 if (235 fiber === currentlyRenderingFiber ||236 (alternate !== null && alternate === currentlyRenderingFiber)237 ) {238 /​/​ This is a render phase update. Stash it in a lazily-created map of239 /​/​ queue -> linked list of updates. After this render pass, we'll restart240 /​/​ and apply the stashed updates on top of the work-in-progress hook.241 didScheduleRenderPhaseUpdateDuringThisPass =242 didScheduleRenderPhaseUpdate = true;243 } else {244 if (245 fiber.lanes === NoLanes &&246 (alternate === null || alternate.lanes === NoLanes)247 ) {248 /​/​ The queue is currently empty, which means we can eagerly compute the249 /​/​ next state before entering the render phase. If the new state is the250 /​/​ same as the current state, we may be able to bail out entirely.251 const lastRenderedReducer = queue.lastRenderedReducer;252 if (lastRenderedReducer !== null) {253 let prevDispatcher;254 try {255 const currentState = queue.lastRenderedState;256 const eagerState = lastRenderedReducer(currentState, action);257 /​/​ Stash the eagerly computed state, and the reducer used to compute258 /​/​ it, on the update object. If the reducer hasn't changed by the259 /​/​ time we enter the render phase, then the eager state can be used260 /​/​ without calling the reducer again.261 update.eagerReducer = lastRenderedReducer;262 update.eagerState = eagerState;263 if (is(eagerState, currentState)) {264 /​/​ Fast path. We can bail out without scheduling React to re-render.265 /​/​ It's still possible that we'll need to rebase this update later,266 /​/​ if the component re-renders for a different reason and by that267 /​/​ time the reducer has changed.268 return;269 }270 } catch (error) {271 /​/​ Suppress the error. It will throw again in the render phase.272 }273 }274 }275 /​/​ 开始render阶段咯276 scheduleUpdateOnFiber(fiber, lane, eventTime);277 }278}279export const ContextOnlyDispatcher = {280 readContext,281 useCallback: throwInvalidHookError,282 useContext: throwInvalidHookError,283 useEffect: throwInvalidHookError,284 useImperativeHandle: throwInvalidHookError,285 useLayoutEffect: throwInvalidHookError,286 useMemo: throwInvalidHookError,287 useReducer: throwInvalidHookError,288 useRef: throwInvalidHookError,289 useState: throwInvalidHookError,290 useDebugValue: throwInvalidHookError,291 useDeferredValue: throwInvalidHookError,292 useTransition: throwInvalidHookError,293 useMutableSource: throwInvalidHookError,294 useOpaqueIdentifier: throwInvalidHookError,295 unstable_isNewReconciler: enableNewReconciler,296};297const HooksDispatcherOnMount = {298 readContext,299 useCallback: mountCallback,300 useContext: readContext,301 useEffect: mountEffect,302 useImperativeHandle: mountImperativeHandle,303 useLayoutEffect: mountLayoutEffect,304 useMemo: mountMemo,305 useReducer: mountReducer,306 useRef: mountRef,307 useState: mountState,308 useDebugValue: mountDebugValue,309 useDeferredValue: mountDeferredValue,310 useTransition: mountTransition,311 useMutableSource: mountMutableSource,312 useOpaqueIdentifier: mountOpaqueIdentifier,313 unstable_isNewReconciler: enableNewReconciler,314};315const HooksDispatcherOnUpdate = {316 readContext,317 useCallback: updateCallback,318 useContext: readContext,319 useEffect: updateEffect,320 useImperativeHandle: updateImperativeHandle,321 useLayoutEffect: updateLayoutEffect,322 useMemo: updateMemo,323 useReducer: updateReducer,324 useRef: updateRef,325 useState: updateState,326 useDebugValue: updateDebugValue,327 useDeferredValue: updateDeferredValue,328 useTransition: updateTransition,329 useMutableSource: updateMutableSource,330 useOpaqueIdentifier: updateOpaqueIdentifier,331 unstable_isNewReconciler: enableNewReconciler,332};333const HooksDispatcherOnRerender = {334 readContext,335 useCallback: updateCallback,336 useContext: readContext,337 useEffect: updateEffect,338 useImperativeHandle: updateImperativeHandle,339 useLayoutEffect: updateLayoutEffect,340 useMemo: updateMemo,341 useReducer: rerenderReducer,342 useRef: updateRef,343 useState: rerenderState,344 useDebugValue: updateDebugValue,345 useDeferredValue: rerenderDeferredValue,346 useTransition: rerenderTransition,347 useMutableSource: updateMutableSource,348 useOpaqueIdentifier: rerenderOpaqueIdentifier,349 unstable_isNewReconciler: enableNewReconciler,...

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Using AI Code Generation

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1const { updateImperativeHandle } = require('playwright-core/​lib/​server/​frames');2const { updateImperativeHandle } = require('playwright-core/​lib/​server/​frames');3const { chromium } = require('playwright');4(async () => {5 const browser = await chromium.launch();6 const page = await browser.newPage();7 await page.screenshot({ path: `example.png` });8 await browser.close();9})();

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Using AI Code Generation

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1const { updateImperativeHandle } = require('playwright/​lib/​server/​frames');2const { updateImperativeHandle } = require('playwright/​lib/​server/​frames');3const { updateImperativeHandle } = require('playwright/​lib/​server/​frames');4const { updateImperativeHandle } = require('playwright/​lib/​server/​frames');5const { updateImperativeHandle } = require('playwright/​lib/​server/​frames');6const { updateImperativeHandle } = require('playwright/​lib/​server/​frames');7const { updateImperativeHandle } = require('playwright/​lib/​server/​frames');8const { updateImperativeHandle } = require('playwright/​lib/​server/​frames');9const { updateImperativeHandle } = require('playwright/​lib/​server/​frames');10const { updateImperativeHandle } = require('playwright/​lib/​server/​frames');11const { updateImperativeHandle } = require('playwright/​lib/​server/​frames');12const { updateImperativeHandle } = require('playwright/​lib/​server/​frames');13const { updateImperativeHandle } = require('playwright/​lib/​server/​frames');14const { updateImperativeHandle } = require('playwright/​lib/​server/​frames');15const { updateImperativeHandle } = require('playwright/​lib/​server/​frames');

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Using AI Code Generation

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1const { chromium } = require('playwright');2(async () => {3 const browser = await chromium.launch();4 const page = await browser.newPage();5 const handle = await page.evaluateHandle(() => document.body);6 handle.asElement().updateImperativeHandle({7 });8 await browser.close();9})();10 const { chromium } = require('playwright');11 (async () => {12 const browser = await chromium.launch();13 const page = await browser.newPage();14 const handle = await page.evaluateHandle(() => document.body);15 const handle1 = await handle.asElement().getImperativeHandle('myHandle');16 console.log(handle1);17 await browser.close();18 })();19const handle = await page.evaluateHandle(() => document.body);20const handle1 = await handle.asElement().getImperativeHandle('myHandle');21console.log(handle1);22const handle = await page.evaluateHandle(() => document.body);23const handle1 = await handle.asElement().getImperativeHandle('myHandle');24console.log(handle1);

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Using AI Code Generation

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1const { updateImperativeHandle } = require('playwright-core/​lib/​client/​elementHandler');2const { chromium } = require('playwright-core');3(async () => {4 const browser = await chromium.launch();5 const context = await browser.newContext();6 const page = await context.newPage();7 const search = await page.$('input[name="q"]');8 await updateImperativeHandle(search, 'value', 'Hello World!');9 await browser.close();10})();

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Using AI Code Generation

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1const { updateImperativeHandle } = require('playwright/​lib/​client/​initializer');2const { chromium } = require('playwright');3const assert = require('assert').strict;4(async () => {5 const browser = await chromium.launch();6 const page = await browser.newPage();7 const handle = await page.$('text=Get started');8 await updateImperativeHandle(handle, 'foo', 'bar');9 const value = await page.evaluate((handle) => handle.foo, handle);10 assert.equal(value, 'bar');11 await browser.close();12})();13const { chromium } = require('playwright');14const assert = require('assert').strict;15(async () => {16 const browser = await chromium.launch();17 const page = await browser.newPage();18 const handle = await page.$('text=Get started');19 await handle.setAttribute('foo', 'bar');20 const value = await page.evaluate((handle) => handle.getAttribute('foo'), handle);21 assert.equal(value, 'bar');22 await browser.close();23})();

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Using AI Code Generation

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1const { chromium } = require('playwright');2const { updateImperativeHandle } = require('playwright/​lib/​client/​selectorEngine');3const { test, expect } = require('@playwright/​test');4test('test', async ({ page }) => {5 const selector = '.navbar__inner .navbar__title';6 const elementHandle = await page.$(selector);7 const html = await page.evaluate(element => element.innerHTML, elementHandle);8 expect(html).toContain('Playwright');9});10test('test', async ({ page }) => {11 const selector = '.navbar__inner .navbar__title';12 const elementHandle = await page.$(selector);13 const html = await page.evaluate(element => element.innerHTML, elementHandle);14 expect(html).toContain('Playwright');15});16test('test', async ({ page }) => {17 const selector = '.navbar__inner .navbar__title';18 const elementHandle = await page.$(selector);19 const html = await page.evaluate(element => element.innerHTML, elementHandle);20 expect(html).toContain('Playwright');21});22test('test', async ({ page }) => {23 const selector = '.navbar__inner .navbar__title';24 const elementHandle = await page.$(selector);25 const html = await page.evaluate(element => element.innerHTML, elementHandle);26 expect(html).toContain('Playwright');27});28test('test', async ({ page }) => {29 const selector = '.navbar__inner .navbar__title';30 const elementHandle = await page.$(selector);31 const html = await page.evaluate(element => element.innerHTML, elementHandle);32 expect(html).toContain('Playwright');33});34test('test', async ({ page }) => {35 const selector = '.navbar__inner .navbar__title';36 const elementHandle = await page.$(selector);37 const html = await page.evaluate(element => element.innerHTML, elementHandle);38 expect(html).toContain('Playwright');39});40test('test', async ({ page }) => {41 const selector = '.navbar__inner .navbar__title';

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Using AI Code Generation

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1const { updateImperativeHandle } = require('@playwright/​test/​lib/​test');2updateImperativeHandle((handle) => {3 return {4 newMethod() {5 console.log('newMethod');6 },7 };8});9test('test', async ({ page }) => {10 await page.newMethod();11});12test('test', async ({ page }) => {13 await page.newMethod();14});15updateImperativeHandle((handle) => {16 return {17 newMethod() {18 console.log('newMethod');19 },20 };21});22test('test', async ({ page }) => {23 await page.newMethod();24});25test('test', async ({ page }) => {26 await page.newMethod();27});28updateImperativeHandle((handle) => {29 return {30 newMethod() {31 console.log('newMethod');32 },33 };34});35test('test', async ({ page }) => {36 await page.newMethod();37});38test('test', async ({ page

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Using AI Code Generation

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1const { updateImperativeHandle } = require('playwright/​lib/​client/​inspector');2updateImperativeHandle('elementHandle', elementHandle, 'myElementHandle');3const { updateImperativeHandle } = require('playwright/​lib/​client/​inspector');4updateImperativeHandle('page', page, 'myPage');5const { updateImperativeHandle } = require('playwright/​lib/​client/​inspector');6updateImperativeHandle('browser', browser, 'myBrowser');7const { updateImperativeHandle } = require('playwright/​lib/​client/​inspector');8updateImperativeHandle('context', context, 'myContext');9const { updateImperativeHandle } = require('playwright/​lib/​client/​inspector');10updateImperativeHandle('frame', frame, 'myFrame');11const { updateImperativeHandle } = require('playwright/​lib/​client/​inspector');12updateImperativeHandle('worker', worker, 'myWorker');13const { updateImperativeHandle } = require('playwright/​lib/​client/​inspector');14updateImperativeHandle('jsHandle', jsHandle, 'myJsHandle');15const { updateImperativeHandle } = require('playwright/​lib/​client/​inspector');16updateImperativeHandle('request', request, 'myRequest');17const { updateImperativeHandle } = require('playwright/​lib/​client/​inspector');18updateImperativeHandle('response', response, 'myResponse');19const { updateImperativeHandle } = require('playwright/​lib/​client/​inspector');20updateImperativeHandle('route', route, 'myRoute');

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Using AI Code Generation

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1updateImperativeHandle(ref, () => {2 return {3 }4});5console.log(ref.current.value);6const ref = useRef();7updateImperativeHandle(ref, () => {8 return {9 }10});11console.log(ref.current.value);

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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:

  1. 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.
  2. 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.
  3. 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.
  4. 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.
  5. Inputs And Buttons In Playwright: Every website has Input boxes and buttons; learn about testing inputs and buttons with different scenarios and examples.
  6. 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.
  7. 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.
  8. 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.
  9. 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.
  10. 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.
  11. 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.
  12. Playwright Video Tutorial: Watch the video tutorials on Playwright testing from experts and get a consecutive in-depth explanation of Playwright automation testing.

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