How to use defineRefPropWarningGetter method in Playwright Internal

Best JavaScript code snippet using playwright-internal

ReactElement.js

Source:ReactElement.js Github

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...47 get: warnAboutAccessingKey,48 configurable: true,49 })50}51function defineRefPropWarningGetter(props, displayName) {52 const warnAboutAccessingRef = function() {53 if (__DEV__ && !specialPropRefWarningShown) {54 specialPropRefWarningShown = true55 console.error(56 '%s: `ref`不是一个`prop`属性. 尝试访问它会导致在`未定义`中被返回。' +57 '如果需要在子组件中访问相同的值，则应该将其作为其他属性传递。(https:/​/​fb.me/​react-special-props)',58 displayName59 )60 }61 }62 warnAboutAccessingRef.isReactWarning = true63 Object.defineProperty(props, 'ref', {64 get: warnAboutAccessingRef,65 configurable: true,66 })67}68const ReactElement = function(type, key, ref, self, source, owner, props) {69 const element = {70 /​/​ 用于标识71 $$typeof: REACT_ELEMENT_TYPE,72 /​/​ 属于元素的内置属性73 type,74 key,75 ref,76 props,77 /​/​ 记录负责创建此元素的组件78 _owner: owner,79 }80 if (__DEV__) {81 /​/​ 验证标志当前是可变的。 我们将其放在外部后备存储上，82 /​/​ 以便冻结整个对象，一旦在常用的开发环境中实现了WeakMap，83 /​/​ 就可以将其替换为WeakMap。84 element._store = {}85 /​/​ 为了使ReactElement的比较更容易用于测试目的，86 /​/​ 我们使验证标志不可枚举（在可能的情况下，它应包括我们在其中运行测试的每个环境），87 /​/​ 因此测试框架将忽略它88 Object.defineProperty(element._store, 'validated', {89 configurable: false,90 enumerable: false,91 writable: true,92 value: false,93 })94 /​/​ self 和 source 仅是 DEV 的属性.95 Object.defineProperty(element, '_self', {96 configurable: false,97 enumerable: false,98 writable: false,99 value: self,100 })101 /​/​ 为了测试目的，在两个不同位置创建的两个元素应被视为相等，102 /​/​ 因此我们将其隐藏起来，以免枚举。103 Object.defineProperty(element, '_source', {104 configurable: false,105 enumerable: false,106 writable: false,107 value: source,108 })109 if (Object.freeze) {110 Object.freeze(element.props)111 Object.freeze(element)112 }113 }114 return element115}116/​**117 * https:/​/​github.com/​reactjs/​rfcs/​pull/​107118 * 简化了React.createElement的工作方式，并最终使我们无需使用forwardRef。119 * @param {*} type120 * @param {object} config121 * @param {string} maybeKey122 */​123export function jsx(type, config, maybeKey) {124 let propName125 /​/​ 提取保留名称126 const props = {}127 let key = null128 let ref = null129 /​/​ 目前，key可以作为一个prop进行传递，如果还显式声明了key，则导致潜在问题130 /​/​ （即<div {...props} key="Hi" /​>或<div key="Hi" {...props} /​>），我们想放弃key的传递131 /​/​ 但是作为中间步骤，我们将用jsxDEV进行除<div {...props} key="Hi" /​>之外的所有操作，132 /​/​ 因为我们目前无法确定key是否为明确声明为undefined或不存在.133 if (maybeKey !== undefined) {134 key = '' + maybeKey135 }136 if (hasValidKey(config)) {137 key = '' + config.key138 }139 if (hasValidRef(config)) {140 ref = '' + config.ref141 }142 /​/​ 其余属性添加到新的props对象143 for (propName in config) {144 if (hasOwnProperty.call(config, propName) && !RESERVED_PROPS.hasOwnProperty(propName)) {145 props[propName] = config[propName]146 }147 }148 /​/​ 处理defaultProps，当prop没有值时，把defaultProp赋值给prop149 if (type && type.defaultProps) {150 const defaultProps = type.defaultProps151 for (const propName in defaultProps) {152 if (props[propName] === undefined) {153 props[propName] = defaultProps[propName]154 }155 }156 }157 return ReactElement(type, key, ref, undefined, undefined, ReactCurrentOwner.current, props)158}159export function jsxDEV(type, config, maybeKey, source, self) {160 let propName161 /​/​ 提取保留名称162 const props = {}163 let key = null164 let ref = null165 /​/​ 目前，key可以作为一个prop进行传递，如果还显式声明了key，则导致潜在问题166 /​/​ （即<div {...props} key="Hi" /​>或<div key="Hi" {...props} /​>），我们想放弃key的传递167 /​/​ 但是作为中间步骤，我们将用jsxDEV进行除<div {...props} key="Hi" /​>之外的所有操作，168 /​/​ 因为我们目前无法确定key是否为明确声明为undefined或不存在.169 if (maybeKey !== undefined) {170 key = '' + maybeKey171 }172 if (hasValidKey(config)) {173 key = '' + config.key174 }175 if (hasValidRef(config)) {176 ref = '' + config.ref177 }178 /​/​ 其余属性添加到新的props对象179 for (propName in config) {180 if (hasOwnProperty.call(config, propName) && !RESERVED_PROPS.hasOwnProperty(propName)) {181 props[propName] = config[propName]182 }183 }184 /​/​ 处理defaultProps，当prop没有值时，把defaultProp赋值给prop185 if (type && type.defaultProps) {186 const defaultProps = type.defaultProps187 for (const propName in defaultProps) {188 if (props[propName] === undefined) {189 props[propName] = defaultProps[propName]190 }191 }192 }193 if (key || ref) {194 const displayName =195 typeof type === 'function' ? type.displayName || type.name || 'Unknown' : type196 if (key) {197 defineKeyPropWarningGetter(props, displayName)198 }199 if (ref) {200 defineRefPropWarningGetter(props, displayName)201 }202 }203 return ReactElement(type, key, ref, self, source, ReactCurrentOwner.current, props)204}205/​/​ @babel/​preset-react会读取React.createElement 方法206/​/​ 并把jsx转义后的值传递给createElement作为参数207/​/​ 创建并返回给定type的一个新的ReactElement208/​/​ 文档位置：https:/​/​reactjs.org/​docs/​react-api.html#createelement209export function createElement(type, config, children) {210 let propName211 const props = {}212 let key = null213 let ref = null214 let self = null215 let source = null216 if (config != null) {217 if (hasValidRef(config)) {218 ref = config.ref219 }220 if (hasValidKey(config)) {221 key = config.key222 }223 self = config.__self === undefined ? null : config.__self224 self = config.__source === undefined ? null : config.__source225 /​/​ 其余属性添加到新的props对象226 for (propName in config) {227 if (hasOwnProperty.call(config, propName) && !RESERVED_PROPS.hasOwnProperty(propName)) {228 props[propName] = config[propName]229 }230 }231 /​/​ 获取子元素232 const childrenLength = arguments.length - 2233 if (childrenLength === 1) {234 props.children = children235 } else if (childrenLength > 1) {236 /​/​ 先声明数组长度性能会好一点，在js中一般不用注意，数据量百万千万次级以上需要注意237 const children = Array(childrenLength)238 for (let i = 0; i < childrenLength; i++) {239 children[i] = arguments[i + childrenLength]240 }241 if (__DEV__ && Object.freeze) {242 Object.freeze(children)243 }244 props.children = children245 }246 }247 /​/​ 处理defaultProps，当prop没有值时，把defaultProp赋值给prop248 if (type && type.defaultProps) {249 const defaultProps = type.defaultProps250 for (const propName in defaultProps) {251 if (props[propName] === undefined) {252 props[propName] = defaultProps[propName]253 }254 }255 }256 /​/​ 开发环境校验子组件中从props属性中拿取ref或者key属性时进行错误提示257 if (__DEV__) {258 if (key || ref) {259 const displayName =260 typeof type === 'function' ? type.displayName || type.name || 'Unknown' : type261 if (key) {262 defineKeyPropWarningGetter(props, displayName)263 }264 if (ref) {265 defineRefPropWarningGetter(props, displayName)266 }267 }268 }269 return ReactElement(type, key, ref, self, source, ReactCurrentOwner.current, props)270}271/​**272 * 返回一个产生给定类型(type)的ReactElement的函数。273 */​274export function createFactory(type) {275 const factory = createElement.bind(null, type)276 /​/​ 在factory和prototype上公开类型(type)，以便可以在元素上轻松访问它。277 /​/​ 例如：`<Foo /​>.type === Foo`。278 /​/​ 不应将其命名为`constructor`，因为它可能不是创建元素的函数，甚至可能不是构造函数。279 /​/​ 旧版挂钩：将其删除...

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a4b085ReactElement.js

Source:a4b085ReactElement.js Github

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...46 get: warnAboutAccessingKey,47 configurable: true48 });49}50function defineRefPropWarningGetter(props, displayName) {51 var warnAboutAccessingRef = function warnAboutAccessingRef() {52 if (!specialPropRefWarningShown) {53 specialPropRefWarningShown = true;54 process.env.NODE_ENV !== 'production' ? warning(false, '%s: `ref` is not a prop. Trying to access it will result ' + 'in `undefined` being returned. If you need to access the same ' + 'value within the child component, you should pass it as a different ' + 'prop. (https:/​/​fb.me/​react-special-props)', displayName) : void 0;55 }56 };57 warnAboutAccessingRef.isReactWarning = true;58 Object.defineProperty(props, 'ref', {59 get: warnAboutAccessingRef,60 configurable: true61 });62}63var ReactElement = function ReactElement(type, key, ref, self, source, owner, props) {64 var element = {65 $$typeof: REACT_ELEMENT_TYPE,66 type: type,67 key: key,68 ref: ref,69 props: props,70 _owner: owner71 };72 if (process.env.NODE_ENV !== 'production') {73 element._store = {};74 if (canDefineProperty) {75 Object.defineProperty(element._store, 'validated', {76 configurable: false,77 enumerable: false,78 writable: true,79 value: false80 });81 Object.defineProperty(element, '_self', {82 configurable: false,83 enumerable: false,84 writable: false,85 value: self86 });87 Object.defineProperty(element, '_source', {88 configurable: false,89 enumerable: false,90 writable: false,91 value: source92 });93 } else {94 element._store.validated = false;95 element._self = self;96 element._source = source;97 }98 if (Object.freeze) {99 Object.freeze(element.props);100 Object.freeze(element);101 }102 }103 return element;104};105ReactElement.createElement = function (type, config, children) {106 var propName;107 var props = {};108 var key = null;109 var ref = null;110 var self = null;111 var source = null;112 if (config != null) {113 if (hasValidRef(config)) {114 ref = config.ref;115 }116 if (hasValidKey(config)) {117 key = '' + config.key;118 }119 self = config.__self === undefined ? null : config.__self;120 source = config.__source === undefined ? null : config.__source;121 for (propName in config) {122 if (hasOwnProperty.call(config, propName) && !RESERVED_PROPS.hasOwnProperty(propName)) {123 props[propName] = config[propName];124 }125 }126 }127 var childrenLength = arguments.length - 2;128 if (childrenLength === 1) {129 props.children = children;130 } else if (childrenLength > 1) {131 var childArray = Array(childrenLength);132 for (var i = 0; i < childrenLength; i++) {133 childArray[i] = arguments[i + 2];134 }135 if (process.env.NODE_ENV !== 'production') {136 if (Object.freeze) {137 Object.freeze(childArray);138 }139 }140 props.children = childArray;141 }142 if (type && type.defaultProps) {143 var defaultProps = type.defaultProps;144 for (propName in defaultProps) {145 if (props[propName] === undefined) {146 props[propName] = defaultProps[propName];147 }148 }149 }150 if (process.env.NODE_ENV !== 'production') {151 if (key || ref) {152 if (typeof props.$$typeof === 'undefined' || props.$$typeof !== REACT_ELEMENT_TYPE) {153 var displayName = typeof type === 'function' ? type.displayName || type.name || 'Unknown' : type;154 if (key) {155 defineKeyPropWarningGetter(props, displayName);156 }157 if (ref) {158 defineRefPropWarningGetter(props, displayName);159 }160 }161 }162 }163 return ReactElement(type, key, ref, self, source, ReactCurrentOwner.current, props);164};165ReactElement.createFactory = function (type) {166 var factory = ReactElement.createElement.bind(null, type);167 factory.type = type;168 return factory;169};170ReactElement.cloneAndReplaceKey = function (oldElement, newKey) {171 var newElement = ReactElement(oldElement.type, newKey, oldElement.ref, oldElement._self, oldElement._source, oldElement._owner, oldElement.props);172 return newElement;...

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70f9baReactElement.js

Source:70f9baReactElement.js Github

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...46 get: warnAboutAccessingKey,47 configurable: true48 });49}50function defineRefPropWarningGetter(props, displayName) {51 var warnAboutAccessingRef = function warnAboutAccessingRef() {52 if (!specialPropRefWarningShown) {53 specialPropRefWarningShown = true;54 process.env.NODE_ENV !== 'production' ? warning(false, '%s: `ref` is not a prop. Trying to access it will result ' + 'in `undefined` being returned. If you need to access the same ' + 'value within the child component, you should pass it as a different ' + 'prop. (https:/​/​fb.me/​react-special-props)', displayName) : void 0;55 }56 };57 warnAboutAccessingRef.isReactWarning = true;58 Object.defineProperty(props, 'ref', {59 get: warnAboutAccessingRef,60 configurable: true61 });62}63var ReactElement = function ReactElement(type, key, ref, self, source, owner, props) {64 var element = {65 $$typeof: REACT_ELEMENT_TYPE,66 type: type,67 key: key,68 ref: ref,69 props: props,70 _owner: owner71 };72 if (process.env.NODE_ENV !== 'production') {73 element._store = {};74 if (canDefineProperty) {75 Object.defineProperty(element._store, 'validated', {76 configurable: false,77 enumerable: false,78 writable: true,79 value: false80 });81 Object.defineProperty(element, '_self', {82 configurable: false,83 enumerable: false,84 writable: false,85 value: self86 });87 Object.defineProperty(element, '_source', {88 configurable: false,89 enumerable: false,90 writable: false,91 value: source92 });93 } else {94 element._store.validated = false;95 element._self = self;96 element._source = source;97 }98 if (Object.freeze) {99 Object.freeze(element.props);100 Object.freeze(element);101 }102 }103 return element;104};105ReactElement.createElement = function (type, config, children) {106 var propName;107 var props = {};108 var key = null;109 var ref = null;110 var self = null;111 var source = null;112 if (config != null) {113 if (hasValidRef(config)) {114 ref = config.ref;115 }116 if (hasValidKey(config)) {117 key = '' + config.key;118 }119 self = config.__self === undefined ? null : config.__self;120 source = config.__source === undefined ? null : config.__source;121 for (propName in config) {122 if (hasOwnProperty.call(config, propName) && !RESERVED_PROPS.hasOwnProperty(propName)) {123 props[propName] = config[propName];124 }125 }126 }127 var childrenLength = arguments.length - 2;128 if (childrenLength === 1) {129 props.children = children;130 } else if (childrenLength > 1) {131 var childArray = Array(childrenLength);132 for (var i = 0; i < childrenLength; i++) {133 childArray[i] = arguments[i + 2];134 }135 if (process.env.NODE_ENV !== 'production') {136 if (Object.freeze) {137 Object.freeze(childArray);138 }139 }140 props.children = childArray;141 }142 if (type && type.defaultProps) {143 var defaultProps = type.defaultProps;144 for (propName in defaultProps) {145 if (props[propName] === undefined) {146 props[propName] = defaultProps[propName];147 }148 }149 }150 if (process.env.NODE_ENV !== 'production') {151 if (key || ref) {152 if (typeof props.$$typeof === 'undefined' || props.$$typeof !== REACT_ELEMENT_TYPE) {153 var displayName = typeof type === 'function' ? type.displayName || type.name || 'Unknown' : type;154 if (key) {155 defineKeyPropWarningGetter(props, displayName);156 }157 if (ref) {158 defineRefPropWarningGetter(props, displayName);159 }160 }161 }162 }163 return ReactElement(type, key, ref, self, source, ReactCurrentOwner.current, props);164};165ReactElement.createFactory = function (type) {166 var factory = ReactElement.createElement.bind(null, type);167 factory.type = type;168 return factory;169};170ReactElement.cloneAndReplaceKey = function (oldElement, newKey) {171 var newElement = ReactElement(oldElement.type, newKey, oldElement.ref, oldElement._self, oldElement._source, oldElement._owner, oldElement.props);172 return newElement;...

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549c13ReactElement.js

Source:549c13ReactElement.js Github

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...46 get: warnAboutAccessingKey,47 configurable: true48 });49}50function defineRefPropWarningGetter(props, displayName) {51 var warnAboutAccessingRef = function warnAboutAccessingRef() {52 if (!specialPropRefWarningShown) {53 specialPropRefWarningShown = true;54 process.env.NODE_ENV !== 'production' ? warning(false, '%s: `ref` is not a prop. Trying to access it will result ' + 'in `undefined` being returned. If you need to access the same ' + 'value within the child component, you should pass it as a different ' + 'prop. (https:/​/​fb.me/​react-special-props)', displayName) : void 0;55 }56 };57 warnAboutAccessingRef.isReactWarning = true;58 Object.defineProperty(props, 'ref', {59 get: warnAboutAccessingRef,60 configurable: true61 });62}63var ReactElement = function ReactElement(type, key, ref, self, source, owner, props) {64 var element = {65 $$typeof: REACT_ELEMENT_TYPE,66 type: type,67 key: key,68 ref: ref,69 props: props,70 _owner: owner71 };72 if (process.env.NODE_ENV !== 'production') {73 element._store = {};74 if (canDefineProperty) {75 Object.defineProperty(element._store, 'validated', {76 configurable: false,77 enumerable: false,78 writable: true,79 value: false80 });81 Object.defineProperty(element, '_self', {82 configurable: false,83 enumerable: false,84 writable: false,85 value: self86 });87 Object.defineProperty(element, '_source', {88 configurable: false,89 enumerable: false,90 writable: false,91 value: source92 });93 } else {94 element._store.validated = false;95 element._self = self;96 element._source = source;97 }98 if (Object.freeze) {99 Object.freeze(element.props);100 Object.freeze(element);101 }102 }103 return element;104};105ReactElement.createElement = function (type, config, children) {106 var propName;107 var props = {};108 var key = null;109 var ref = null;110 var self = null;111 var source = null;112 if (config != null) {113 if (hasValidRef(config)) {114 ref = config.ref;115 }116 if (hasValidKey(config)) {117 key = '' + config.key;118 }119 self = config.__self === undefined ? null : config.__self;120 source = config.__source === undefined ? null : config.__source;121 for (propName in config) {122 if (hasOwnProperty.call(config, propName) && !RESERVED_PROPS.hasOwnProperty(propName)) {123 props[propName] = config[propName];124 }125 }126 }127 var childrenLength = arguments.length - 2;128 if (childrenLength === 1) {129 props.children = children;130 } else if (childrenLength > 1) {131 var childArray = Array(childrenLength);132 for (var i = 0; i < childrenLength; i++) {133 childArray[i] = arguments[i + 2];134 }135 if (process.env.NODE_ENV !== 'production') {136 if (Object.freeze) {137 Object.freeze(childArray);138 }139 }140 props.children = childArray;141 }142 if (type && type.defaultProps) {143 var defaultProps = type.defaultProps;144 for (propName in defaultProps) {145 if (props[propName] === undefined) {146 props[propName] = defaultProps[propName];147 }148 }149 }150 if (process.env.NODE_ENV !== 'production') {151 if (key || ref) {152 if (typeof props.$$typeof === 'undefined' || props.$$typeof !== REACT_ELEMENT_TYPE) {153 var displayName = typeof type === 'function' ? type.displayName || type.name || 'Unknown' : type;154 if (key) {155 defineKeyPropWarningGetter(props, displayName);156 }157 if (ref) {158 defineRefPropWarningGetter(props, displayName);159 }160 }161 }162 }163 return ReactElement(type, key, ref, self, source, ReactCurrentOwner.current, props);164};165ReactElement.createFactory = function (type) {166 var factory = ReactElement.createElement.bind(null, type);167 factory.type = type;168 return factory;169};170ReactElement.cloneAndReplaceKey = function (oldElement, newKey) {171 var newElement = ReactElement(oldElement.type, newKey, oldElement.ref, oldElement._self, oldElement._source, oldElement._owner, oldElement.props);172 return newElement;...

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f3b92a9d2201284e490ce92a51cb9a57ef07a0ReactElement.js

Source:f3b92a9d2201284e490ce92a51cb9a57ef07a0ReactElement.js Github

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...46 get: warnAboutAccessingKey,47 configurable: true48 });49}50function defineRefPropWarningGetter(props, displayName) {51 var warnAboutAccessingRef = function warnAboutAccessingRef() {52 if (!specialPropRefWarningShown) {53 specialPropRefWarningShown = true;54 process.env.NODE_ENV !== 'production' ? warning(false, '%s: `ref` is not a prop. Trying to access it will result ' + 'in `undefined` being returned. If you need to access the same ' + 'value within the child component, you should pass it as a different ' + 'prop. (https:/​/​fb.me/​react-special-props)', displayName) : void 0;55 }56 };57 warnAboutAccessingRef.isReactWarning = true;58 Object.defineProperty(props, 'ref', {59 get: warnAboutAccessingRef,60 configurable: true61 });62}63var ReactElement = function ReactElement(type, key, ref, self, source, owner, props) {64 var element = {65 $$typeof: REACT_ELEMENT_TYPE,66 type: type,67 key: key,68 ref: ref,69 props: props,70 _owner: owner71 };72 if (process.env.NODE_ENV !== 'production') {73 element._store = {};74 if (canDefineProperty) {75 Object.defineProperty(element._store, 'validated', {76 configurable: false,77 enumerable: false,78 writable: true,79 value: false80 });81 Object.defineProperty(element, '_self', {82 configurable: false,83 enumerable: false,84 writable: false,85 value: self86 });87 Object.defineProperty(element, '_source', {88 configurable: false,89 enumerable: false,90 writable: false,91 value: source92 });93 } else {94 element._store.validated = false;95 element._self = self;96 element._source = source;97 }98 if (Object.freeze) {99 Object.freeze(element.props);100 Object.freeze(element);101 }102 }103 return element;104};105ReactElement.createElement = function (type, config, children) {106 var propName;107 var props = {};108 var key = null;109 var ref = null;110 var self = null;111 var source = null;112 if (config != null) {113 if (hasValidRef(config)) {114 ref = config.ref;115 }116 if (hasValidKey(config)) {117 key = '' + config.key;118 }119 self = config.__self === undefined ? null : config.__self;120 source = config.__source === undefined ? null : config.__source;121 for (propName in config) {122 if (hasOwnProperty.call(config, propName) && !RESERVED_PROPS.hasOwnProperty(propName)) {123 props[propName] = config[propName];124 }125 }126 }127 var childrenLength = arguments.length - 2;128 if (childrenLength === 1) {129 props.children = children;130 } else if (childrenLength > 1) {131 var childArray = Array(childrenLength);132 for (var i = 0; i < childrenLength; i++) {133 childArray[i] = arguments[i + 2];134 }135 if (process.env.NODE_ENV !== 'production') {136 if (Object.freeze) {137 Object.freeze(childArray);138 }139 }140 props.children = childArray;141 }142 if (type && type.defaultProps) {143 var defaultProps = type.defaultProps;144 for (propName in defaultProps) {145 if (props[propName] === undefined) {146 props[propName] = defaultProps[propName];147 }148 }149 }150 if (process.env.NODE_ENV !== 'production') {151 if (key || ref) {152 if (typeof props.$$typeof === 'undefined' || props.$$typeof !== REACT_ELEMENT_TYPE) {153 var displayName = typeof type === 'function' ? type.displayName || type.name || 'Unknown' : type;154 if (key) {155 defineKeyPropWarningGetter(props, displayName);156 }157 if (ref) {158 defineRefPropWarningGetter(props, displayName);159 }160 }161 }162 }163 return ReactElement(type, key, ref, self, source, ReactCurrentOwner.current, props);164};165ReactElement.createFactory = function (type) {166 var factory = ReactElement.createElement.bind(null, type);167 factory.type = type;168 return factory;169};170ReactElement.cloneAndReplaceKey = function (oldElement, newKey) {171 var newElement = ReactElement(oldElement.type, newKey, oldElement.ref, oldElement._self, oldElement._source, oldElement._owner, oldElement.props);172 return newElement;...

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167c15ReactElement.js

Source:167c15ReactElement.js Github

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...44Object.defineProperty(props,'key',{45get:warnAboutAccessingKey,46configurable:true});47}48function defineRefPropWarningGetter(props,displayName){49var warnAboutAccessingRef=function warnAboutAccessingRef(){50if(!specialPropRefWarningShown){51specialPropRefWarningShown=true;52process.env.NODE_ENV!=='production'?warning(false,'%s: `ref` is not a prop. Trying to access it will result '+'in `undefined` being returned. If you need to access the same '+'value within the child component, you should pass it as a different '+'prop. (https:/​/​fb.me/​react-special-props)',displayName):void 0;53}54};55warnAboutAccessingRef.isReactWarning=true;56Object.defineProperty(props,'ref',{57get:warnAboutAccessingRef,58configurable:true});59}60var ReactElement=function ReactElement(type,key,ref,self,source,owner,props){61var element={62$$typeof:REACT_ELEMENT_TYPE,63type:type,64key:key,65ref:ref,66props:props,67_owner:owner};68if(process.env.NODE_ENV!=='production'){69element._store={};70if(canDefineProperty){71Object.defineProperty(element._store,'validated',{72configurable:false,73enumerable:false,74writable:true,75value:false});76Object.defineProperty(element,'_self',{77configurable:false,78enumerable:false,79writable:false,80value:self});81Object.defineProperty(element,'_source',{82configurable:false,83enumerable:false,84writable:false,85value:source});86}else{87element._store.validated=false;88element._self=self;89element._source=source;90}91if(Object.freeze){92Object.freeze(element.props);93Object.freeze(element);94}95}96return element;97};98ReactElement.createElement=function(type,config,children){99var propName;100var props={};101var key=null;102var ref=null;103var self=null;104var source=null;105if(config!=null){106if(hasValidRef(config)){107ref=config.ref;108}109if(hasValidKey(config)){110key=''+config.key;111}112self=config.__self===undefined?null:config.__self;113source=config.__source===undefined?null:config.__source;114for(propName in config){115if(hasOwnProperty.call(config,propName)&&!RESERVED_PROPS.hasOwnProperty(propName)){116props[propName]=config[propName];117}118}119}120var childrenLength=arguments.length-2;121if(childrenLength===1){122props.children=children;123}else if(childrenLength>1){124var childArray=Array(childrenLength);125for(var i=0;i<childrenLength;i++){126childArray[i]=arguments[i+2];127}128if(process.env.NODE_ENV!=='production'){129if(Object.freeze){130Object.freeze(childArray);131}132}133props.children=childArray;134}135if(type&&type.defaultProps){136var defaultProps=type.defaultProps;137for(propName in defaultProps){138if(props[propName]===undefined){139props[propName]=defaultProps[propName];140}141}142}143if(process.env.NODE_ENV!=='production'){144if(key||ref){145if(typeof props.$$typeof==='undefined'||props.$$typeof!==REACT_ELEMENT_TYPE){146var displayName=typeof type==='function'?type.displayName||type.name||'Unknown':type;147if(key){148defineKeyPropWarningGetter(props,displayName);149}150if(ref){151defineRefPropWarningGetter(props,displayName);152}153}154}155}156return ReactElement(type,key,ref,self,source,ReactCurrentOwner.current,props);157};158ReactElement.createFactory=function(type){159var factory=ReactElement.createElement.bind(null,type);160factory.type=type;161return factory;162};163ReactElement.cloneAndReplaceKey=function(oldElement,newKey){164var newElement=ReactElement(oldElement.type,newKey,oldElement.ref,oldElement._self,oldElement._source,oldElement._owner,oldElement.props);165return newElement;...

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05712eReactElement.js

Source:05712eReactElement.js Github

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...44Object.defineProperty(props,'key',{45get:warnAboutAccessingKey,46configurable:true});47}48function defineRefPropWarningGetter(props,displayName){49var warnAboutAccessingRef=function warnAboutAccessingRef(){50if(!specialPropRefWarningShown){51specialPropRefWarningShown=true;52process.env.NODE_ENV!=='production'?warning(false,'%s: `ref` is not a prop. Trying to access it will result '+'in `undefined` being returned. If you need to access the same '+'value within the child component, you should pass it as a different '+'prop. (https:/​/​fb.me/​react-special-props)',displayName):void 0;53}54};55warnAboutAccessingRef.isReactWarning=true;56Object.defineProperty(props,'ref',{57get:warnAboutAccessingRef,58configurable:true});59}60var ReactElement=function ReactElement(type,key,ref,self,source,owner,props){61var element={62$$typeof:REACT_ELEMENT_TYPE,63type:type,64key:key,65ref:ref,66props:props,67_owner:owner};68if(process.env.NODE_ENV!=='production'){69element._store={};70if(canDefineProperty){71Object.defineProperty(element._store,'validated',{72configurable:false,73enumerable:false,74writable:true,75value:false});76Object.defineProperty(element,'_self',{77configurable:false,78enumerable:false,79writable:false,80value:self});81Object.defineProperty(element,'_source',{82configurable:false,83enumerable:false,84writable:false,85value:source});86}else{87element._store.validated=false;88element._self=self;89element._source=source;90}91if(Object.freeze){92Object.freeze(element.props);93Object.freeze(element);94}95}96return element;97};98ReactElement.createElement=function(type,config,children){99var propName;100var props={};101var key=null;102var ref=null;103var self=null;104var source=null;105if(config!=null){106if(hasValidRef(config)){107ref=config.ref;108}109if(hasValidKey(config)){110key=''+config.key;111}112self=config.__self===undefined?null:config.__self;113source=config.__source===undefined?null:config.__source;114for(propName in config){115if(hasOwnProperty.call(config,propName)&&!RESERVED_PROPS.hasOwnProperty(propName)){116props[propName]=config[propName];117}118}119}120var childrenLength=arguments.length-2;121if(childrenLength===1){122props.children=children;123}else if(childrenLength>1){124var childArray=Array(childrenLength);125for(var i=0;i<childrenLength;i++){126childArray[i]=arguments[i+2];127}128if(process.env.NODE_ENV!=='production'){129if(Object.freeze){130Object.freeze(childArray);131}132}133props.children=childArray;134}135if(type&&type.defaultProps){136var defaultProps=type.defaultProps;137for(propName in defaultProps){138if(props[propName]===undefined){139props[propName]=defaultProps[propName];140}141}142}143if(process.env.NODE_ENV!=='production'){144if(key||ref){145if(typeof props.$$typeof==='undefined'||props.$$typeof!==REACT_ELEMENT_TYPE){146var displayName=typeof type==='function'?type.displayName||type.name||'Unknown':type;147if(key){148defineKeyPropWarningGetter(props,displayName);149}150if(ref){151defineRefPropWarningGetter(props,displayName);152}153}154}155}156return ReactElement(type,key,ref,self,source,ReactCurrentOwner.current,props);157};158ReactElement.createFactory=function(type){159var factory=ReactElement.createElement.bind(null,type);160factory.type=type;161return factory;162};163ReactElement.cloneAndReplaceKey=function(oldElement,newKey){164var newElement=ReactElement(oldElement.type,newKey,oldElement.ref,oldElement._self,oldElement._source,oldElement._owner,oldElement.props);165return newElement;...

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defineRefPropWarningGetter.js

Source:defineRefPropWarningGetter.js Github

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1/​* 测试用：添加 ref 属性警告 */​2function defineRefPropWarningGetter(props, displayName) {3 const warnAboutAccessingRef = function() {4 if (__DEV__) {5 if (!specialPropRefWarningShown) {6 specialPropRefWarningShown = true;7 console.error(8 '%s: `ref` is not a prop. Trying to access it will result ' +9 'in `undefined` being returned. If you need to access the same ' +10 'value within the child component, you should pass it as a different ' +11 'prop. (https:/​/​reactjs.org/​link/​special-props)',12 displayName,13 );14 }15 }16 };...

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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 await page.screenshot({ path: 'example.png' });6 await browser.close();7})();8const { chromium } = require('playwright');9(async () => {10 const browser = await chromium.launch();11 const page = await browser.newPage();12 await page.screenshot({ path: 'example.png' });13 await browser.close();14})();

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Using AI Code Generation

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1const { defineRefPropWarningGetter } = require('playwright/​lib/​utils/​internal-utils');2defineRefPropWarningGetter(page, 'browser');3const { defineRefPropWarningGetter } = require('playwright/​lib/​utils/​internal-utils');4defineRefPropWarningGetter(page, 'browserContext');5const { defineRefPropWarningGetter } = require('playwright/​lib/​utils/​internal-utils');6defineRefPropWarningGetter(page, 'frame');7const { defineRefPropWarningGetter } = require('playwright/​lib/​utils/​internal-utils');8defineRefPropWarningGetter(page, 'mainFrame');9const { defineRefPropWarningGetter } = require('playwright/​lib/​utils/​internal-utils');10defineRefPropWarningGetter(page, 'parentFrame');11const { defineRefPropWarningGetter } = require('playwright/​lib/​utils/​internal-utils');12defineRefPropWarningGetter(page, 'childFrames');13const { defineRefPropWarningGetter } = require('playwright/​lib/​utils/​internal-utils');14defineRefPropWarningGetter(page, 'opener');15const { defineRefPropWarningGetter } = require('playwright/​lib/​utils/​internal-utils');16defineRefPropWarningGetter(page, 'url');17const { defineRefPropWarningGetter } = require('playwright/​lib/​utils/​internal-utils');18defineRefPropWarningGetter(page, 'content');19const { defineRefPropWarningGetter } = require('playwright/​lib/​utils/​internal-utils');20defineRefPropWarningGetter(page, 'textContent');21const { defineRefPropWarningGetter } = require('playwright/​lib/​utils/​internal-utils');22defineRefPropWarningGetter(page, 'title');23const { defineRefPropWarningGetter }

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Using AI Code Generation

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1const { defineRefPropWarningGetter } = require('@playwright/​test/​lib/​internal/​stackTrace');2const { Page } = require('@playwright/​test');3defineRefPropWarningGetter(Page.prototype, 'myCustomPageMethod', 'page.myCustomPageMethod');4Page.prototype.myCustomPageMethod = async function () {5 await this.click('div');6};7const { test } = require('@playwright/​test');8test('test', async ({ page }) => {9 await page.myCustomPageMethod();10});11 > 8 | Page.prototype.myCustomPageMethod = async function () {12 9 | await this.click('div');13 10 | };14 at Object.<anonymous> (test.js:8:1)15 at Object.<anonymous> (test.spec.js:4:1)16 > 8 | Page.prototype.myCustomPageMethod = async function () {17 9 | await this.click('div');18 10 | };19 at Object.<anonymous> (test.js:8:1)20 at Object.<anonymous> (test.spec.js:4:1)21 > 8 | Page.prototype.myCustomPageMethod = async function () {22 9 | await this.click('div');23 10 | };24 at Object.<anonymous> (test.js:8:1)25 at Object.<anonymous> (test.spec.js:4:1)26 at Object.<anonymous> (test.spec.js:4:1)27 > 8 | Page.prototype.myCustomPageMethod = async function () {28 9 | await this.click('div');29 10 | };30 at Object.<anonymous> (test.js:8:1)31 at Object.<anonymous> (test.spec.js:4:1)32 at Object.<anonymous> (test.spec.js:4:1)

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Using AI Code Generation

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1const { helper } = require('@playwright/​test');2const defineRefPropWarningGetter = require('@playwright/​test/​lib/​helper').defineRefPropWarningGetter;3defineRefPropWarningGetter(helper, 'page', 'page');4defineRefPropWarningGetter(helper, 'frame', 'frame');5const { helper } = require('@playwright/​test');6const defineRefPropWarningGetter = require('@playwright/​test/​lib/​helper').defineRefPropWarningGetter;7defineRefPropWarningGetter(helper, 'page', 'page');8defineRefPropWarningGetter(helper, 'frame', 'frame');9const { test, expect } = require('@playwright/​test');10test('Sample Test', async ({ page }) => {11const title = page.locator('text=Get Started');12await expect(title).toBeVisible();13});14test('Sample Test', async ({ page }) => {15const title = page.locator('text=Get Started');16await expect(title).toBeVisible();17});18const { test, expect } = require('@playwright/​test');19test('Sample Test', async ({ page }) => {20const title = page.locator('text=Get Started');21await expect(title).toBeVisible();22});23test('Sample Test', async ({ page }) => {24const title = page.locator('text=Get Started');25await expect(title).toBeVisible();26});27const { test, expect } = require('@playwright/​test');28test('Sample Test', async ({ page }) => {29const title = page.locator('text=Get Started');30await expect(title).toBeVisible();31});32test('Sample Test', async ({ page }) => {33const title = page.locator('text=Get Started');34await expect(title).toBeVisible();35});36const { test, expect } = require('@playwright/​test');37test('Sample Test', async ({ page }) => {38const title = page.locator('text=Get Started');39await expect(title).toBeVisible();40});41test('Sample Test', async ({ page }) => {

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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 context = await browser.newContext();5 const page = await context.newPage();6 const internalPage = page._delegate;7 const internalPageObject = internalPage._object;8 internalPageObject.defineRefPropWarningGetter('frame', 'frame');9 const frame = await internalPageObject.frame();10 console.log(frame);11 await browser.close();12})();13const { chromium } = require('playwright');14(async () => {15 const browser = await chromium.launch();16 const context = await browser.newContext();17 const page = await context.newPage();18 const internalPage = page._delegate;19 const internalPageObject = internalPage._object;20 const frame = await internalPageObject.frame();21 console.log(frame);22 await browser.close();23})();24Your name to display (optional):25Your name to display (optional):26const { chromium } = require('playwright');27(async () => {28 const browser = await chromium.launch();29 const context = await browser.newContext();30 const page = await context.newPage();31 const internalPage = page._delegate;32 const internalPageObject = internalPage._object;33 internalPageObject.defineRefPropWarningGetter('frame', 'frame');34 const frame = await internalPageObject.frame();35 console.log(frame);36 await browser.close();37})();38Your name to display (optional):

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Using AI Code Generation

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1const {defineRefPropWarningGetter} = require('playwright/​lib/​server/​frames');2defineRefPropWarningGetter();3const {chromium, webkit, firefox} = require('playwright');4const browser = await chromium.launch();5const context = await browser.newContext();6const page = await context.newPage();7await page.screenshot({path: 'google.png'});8await browser.close();9const {defineRefPropWarningGetter} = require('playwright/​lib/​server/​frames');10defineRefPropWarningGetter();11const {chromium, webkit, firefox} = require('playwright');12const browser = await chromium.launch();13const context = await browser.newContext();14const page = await context.newPage();15await page.screenshot({path: 'google.png'});16await browser.close();17const {defineRefPropWarningGetter} = require('playwright/​lib/​server/​frames');18defineRefPropWarningGetter();19const {chromium, webkit, firefox} = require('playwright');20const browser = await chromium.launch();21const context = await browser.newContext();22const page = await context.newPage();

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Using AI Code Generation

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1const { defineRefPropWarningGetter } = require('@playwright/​test/​lib/​utils/​internal').helper;2defineRefPropWarningGetter(page, 'myProperty');3const myProperty = page.myProperty;4const { defineRefPropWarningGetter } = require('@playwright/​test/​lib/​utils/​internal').helper;5defineRefPropWarningGetter(page, 'myProperty', 'My custom message');6const myProperty = page.myProperty;7const { defineRefPropWarningGetter } = require('@playwright/​test/​lib/​utils/​internal').helper;8defineRefPropWarningGetter(page, 'myProperty', 'My custom message', () => {9});10const myProperty = page.myProperty;11[Apache 2.0](LICENSE.txt)

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Using AI Code Generation

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1const { defineRefPropWarningGetter } = require('playwright-core/​lib/​helper');2defineRefPropWarningGetter('page', 'someProp', 'some warning message');3const { chromium } = require('playwright-core');4(async () => {5 const browser = await chromium.launch();6 const context = await browser.newContext();7 const page = await context.newPage();8 page.someProp = 'some value';9 await browser.close();10})();11const { defineRefPropWarningGetter } = require('playwright-core/​lib/​helper');12defineRefPropWarningGetter('page', 'someProp', 'some warning message');13const { chromium } = require('playwright-core');14(async () => {15 const browser = await chromium.launch();16 const context = await browser.newContext();17 const page = await context.newPage();18 page.someProp = 'some value';19 await browser.close();20})();21const { defineRefPropWarningGetter } = require('playwright-core/​lib/​helper');22defineRefPropWarningGetter('page', 'someProp', 'some warning message');23const { chromium } = require('playwright-core');24(async () => {25 const browser = await chromium.launch();26 const context = await browser.newContext();27 const page = await context.newPage();28 page.someProp = 'some value';29 await browser.close();30})();31const { defineRefPropWarningGetter } = require('playwright-core/​lib/​helper');32defineRefPropWarningGetter('page', 'someProp', 'some warning message');33const { chromium } = require('playwright-core');34(async () => {35 const browser = await chromium.launch();36 const context = await browser.newContext();37 const page = await context.newPage();38 page.someProp = 'some value';39 await browser.close();40})();41const { defineRefPropWarningGetter } = require

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Using AI Code Generation

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1const { chromium } = require('playwright');2const { defineRefPropWarningGetter } = require('playwright/​internal/​utils/​stackTrace');3const { expect } = require('chai');4(async () => {5 const browser = await chromium.launch();6 const page = await browser.newPage();7 defineRefPropWarningGetter(page, 'title', 'page.title()', 'page.title()');8 const warning = await page.evaluate(() => {9 const title = page.title();10 return title;11 });12 expect(warning).to.equal('Playwright: Node.js library to automate Chromium, Firefox and WebKit with a single API');13 const title = await page.title();14 expect(title).to.equal('Playwright: Node.js library to automate Chromium, Firefox and WebKit with a single API');15 await browser.close();16})();

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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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