KaneAI - World’s First E2E Software Testing Agent.Signup for Private Beta Join TestMu Conference

How to use checkClassInstance method in Playwright Internal

Best JavaScript code snippet using playwright-internal

f189e48c57ab153db02a9093b6892b2590ce4dReactFiberClassComponent.js

Source:f189e48c57ab153db02a9093b6892b2590ce4dReactFiberClassComponent.js

...87      return !shallowEqual(oldProps, newProps) || !shallowEqual(oldState, newState);88    }89    return true;90  }91  function checkClassInstance(workInProgress) {92    var instance = workInProgress.stateNode;93    if (__DEV__) {94      var name = getComponentName(workInProgress);95      var renderPresent = instance.render;96      warning(renderPresent, '%s(...): No `render` method found on the returned component ' + 'instance: you may have forgotten to define `render`.', name);97      var noGetInitialStateOnES6 = !instance.getInitialState || instance.getInitialState.isReactClassApproved || instance.state;98      warning(noGetInitialStateOnES6, 'getInitialState was defined on %s, a plain JavaScript class. ' + 'This is only supported for classes created using React.createClass. ' + 'Did you mean to define a state property instead?', name);99      var noGetDefaultPropsOnES6 = !instance.getDefaultProps || instance.getDefaultProps.isReactClassApproved;100      warning(noGetDefaultPropsOnES6, 'getDefaultProps was defined on %s, a plain JavaScript class. ' + 'This is only supported for classes created using React.createClass. ' + 'Use a static property to define defaultProps instead.', name);101      var noInstancePropTypes = !instance.propTypes;102      warning(noInstancePropTypes, 'propTypes was defined as an instance property on %s. Use a static ' + 'property to define propTypes instead.', name);103      var noInstanceContextTypes = !instance.contextTypes;104      warning(noInstanceContextTypes, 'contextTypes was defined as an instance property on %s. Use a static ' + 'property to define contextTypes instead.', name);105      var noComponentShouldUpdate = typeof instance.componentShouldUpdate !== 'function';106      warning(noComponentShouldUpdate, '%s has a method called ' + 'componentShouldUpdate(). Did you mean shouldComponentUpdate()? ' + 'The name is phrased as a question because the function is ' + 'expected to return a value.', name);107      var noComponentDidUnmount = typeof instance.componentDidUnmount !== 'function';108      warning(noComponentDidUnmount, '%s has a method called ' + 'componentDidUnmount(). But there is no such lifecycle method. ' + 'Did you mean componentWillUnmount()?', name);109      var noComponentWillRecieveProps = typeof instance.componentWillRecieveProps !== 'function';110      warning(noComponentWillRecieveProps, '%s has a method called ' + 'componentWillRecieveProps(). Did you mean componentWillReceiveProps()?', name);111      var hasMutatedProps = instance.props !== workInProgress.pendingProps;112      warning(instance.props === undefined || !hasMutatedProps, '%s(...): When calling super() in `%s`, make sure to pass ' + "up the same props that your component's constructor was passed.", name, name);113    }114    var state = instance.state;115    if (state && (typeof state !== 'object' || isArray(state))) {116      invariant(false, '%s.state: must be set to an object or null', getComponentName(workInProgress));117    }118    if (typeof instance.getChildContext === 'function') {119      invariant(typeof workInProgress.type.childContextTypes === 'object', '%s.getChildContext(): childContextTypes must be defined in order to ' + 'use getChildContext().', getComponentName(workInProgress));120    }121  }122  function resetInputPointers(workInProgress, instance) {123    instance.props = workInProgress.memoizedProps;124    instance.state = workInProgress.memoizedState;125  }126  function adoptClassInstance(workInProgress, instance) {127    instance.updater = updater;128    workInProgress.stateNode = instance;129    ReactInstanceMap.set(instance, workInProgress);130  }131  function constructClassInstance(workInProgress) {132    var ctor = workInProgress.type;133    var props = workInProgress.pendingProps;134    var unmaskedContext = getUnmaskedContext(workInProgress);135    var needsContext = isContextConsumer(workInProgress);136    var context = needsContext ? getMaskedContext(workInProgress, unmaskedContext) : emptyObject;137    var instance = new ctor(props, context);138    adoptClassInstance(workInProgress, instance);139    checkClassInstance(workInProgress);140    if (needsContext) {141      cacheContext(workInProgress, unmaskedContext, context);142    }143    return instance;144  }145  function mountClassInstance(workInProgress, priorityLevel) {146    var instance = workInProgress.stateNode;147    var state = instance.state || null;148    var props = workInProgress.pendingProps;149    invariant(props, 'There must be pending props for an initial mount. This error is ' + 'likely caused by a bug in React. Please file an issue.');150    var unmaskedContext = getUnmaskedContext(workInProgress);151    instance.props = props;152    instance.state = state;153    instance.refs = emptyObject;...

5189058ca83259b19f61a71152c744cf5554ccReactFiberClassComponent.js

Source:5189058ca83259b19f61a71152c744cf5554ccReactFiberClassComponent.js

...87      return !shallowEqual(oldProps, newProps) || !shallowEqual(oldState, newState);88    }89    return true;90  }91  function checkClassInstance(workInProgress) {92    var instance = workInProgress.stateNode;93    if (__DEV__) {94      var name = getComponentName(workInProgress);95      var renderPresent = instance.render;96      warning(renderPresent, '%s(...): No `render` method found on the returned component ' + 'instance: you may have forgotten to define `render`.', name);97      var noGetInitialStateOnES6 = !instance.getInitialState || instance.getInitialState.isReactClassApproved || instance.state;98      warning(noGetInitialStateOnES6, 'getInitialState was defined on %s, a plain JavaScript class. ' + 'This is only supported for classes created using React.createClass. ' + 'Did you mean to define a state property instead?', name);99      var noGetDefaultPropsOnES6 = !instance.getDefaultProps || instance.getDefaultProps.isReactClassApproved;100      warning(noGetDefaultPropsOnES6, 'getDefaultProps was defined on %s, a plain JavaScript class. ' + 'This is only supported for classes created using React.createClass. ' + 'Use a static property to define defaultProps instead.', name);101      var noInstancePropTypes = !instance.propTypes;102      warning(noInstancePropTypes, 'propTypes was defined as an instance property on %s. Use a static ' + 'property to define propTypes instead.', name);103      var noInstanceContextTypes = !instance.contextTypes;104      warning(noInstanceContextTypes, 'contextTypes was defined as an instance property on %s. Use a static ' + 'property to define contextTypes instead.', name);105      var noComponentShouldUpdate = typeof instance.componentShouldUpdate !== 'function';106      warning(noComponentShouldUpdate, '%s has a method called ' + 'componentShouldUpdate(). Did you mean shouldComponentUpdate()? ' + 'The name is phrased as a question because the function is ' + 'expected to return a value.', name);107      var noComponentDidUnmount = typeof instance.componentDidUnmount !== 'function';108      warning(noComponentDidUnmount, '%s has a method called ' + 'componentDidUnmount(). But there is no such lifecycle method. ' + 'Did you mean componentWillUnmount()?', name);109      var noComponentWillRecieveProps = typeof instance.componentWillRecieveProps !== 'function';110      warning(noComponentWillRecieveProps, '%s has a method called ' + 'componentWillRecieveProps(). Did you mean componentWillReceiveProps()?', name);111      var hasMutatedProps = instance.props !== workInProgress.pendingProps;112      warning(instance.props === undefined || !hasMutatedProps, '%s(...): When calling super() in `%s`, make sure to pass ' + "up the same props that your component's constructor was passed.", name, name);113    }114    var state = instance.state;115    if (state && (typeof state !== 'object' || isArray(state))) {116      invariant(false, '%s.state: must be set to an object or null', getComponentName(workInProgress));117    }118    if (typeof instance.getChildContext === 'function') {119      invariant(typeof workInProgress.type.childContextTypes === 'object', '%s.getChildContext(): childContextTypes must be defined in order to ' + 'use getChildContext().', getComponentName(workInProgress));120    }121  }122  function resetInputPointers(workInProgress, instance) {123    instance.props = workInProgress.memoizedProps;124    instance.state = workInProgress.memoizedState;125  }126  function adoptClassInstance(workInProgress, instance) {127    instance.updater = updater;128    workInProgress.stateNode = instance;129    ReactInstanceMap.set(instance, workInProgress);130  }131  function constructClassInstance(workInProgress) {132    var ctor = workInProgress.type;133    var props = workInProgress.pendingProps;134    var unmaskedContext = getUnmaskedContext(workInProgress);135    var needsContext = isContextConsumer(workInProgress);136    var context = needsContext ? getMaskedContext(workInProgress, unmaskedContext) : emptyObject;137    var instance = new ctor(props, context);138    adoptClassInstance(workInProgress, instance);139    checkClassInstance(workInProgress);140    if (needsContext) {141      cacheContext(workInProgress, unmaskedContext, context);142    }143    return instance;144  }145  function mountClassInstance(workInProgress, priorityLevel) {146    var instance = workInProgress.stateNode;147    var state = instance.state || null;148    var props = workInProgress.pendingProps;149    invariant(props, 'There must be pending props for an initial mount. This error is ' + 'likely caused by a bug in React. Please file an issue.');150    var unmaskedContext = getUnmaskedContext(workInProgress);151    instance.props = props;152    instance.state = state;153    instance.refs = emptyObject;...

63dfe97fc56ec59927fe7014929325c1aa846dReactFiberClassComponent.js

Source:63dfe97fc56ec59927fe7014929325c1aa846dReactFiberClassComponent.js

...87      return !shallowEqual(oldProps, newProps) || !shallowEqual(oldState, newState);88    }89    return true;90  }91  function checkClassInstance(workInProgress) {92    var instance = workInProgress.stateNode;93    if (__DEV__) {94      var name = getComponentName(workInProgress);95      var renderPresent = instance.render;96      warning(renderPresent, '%s(...): No `render` method found on the returned component ' + 'instance: you may have forgotten to define `render`.', name);97      var noGetInitialStateOnES6 = !instance.getInitialState || instance.getInitialState.isReactClassApproved || instance.state;98      warning(noGetInitialStateOnES6, 'getInitialState was defined on %s, a plain JavaScript class. ' + 'This is only supported for classes created using React.createClass. ' + 'Did you mean to define a state property instead?', name);99      var noGetDefaultPropsOnES6 = !instance.getDefaultProps || instance.getDefaultProps.isReactClassApproved;100      warning(noGetDefaultPropsOnES6, 'getDefaultProps was defined on %s, a plain JavaScript class. ' + 'This is only supported for classes created using React.createClass. ' + 'Use a static property to define defaultProps instead.', name);101      var noInstancePropTypes = !instance.propTypes;102      warning(noInstancePropTypes, 'propTypes was defined as an instance property on %s. Use a static ' + 'property to define propTypes instead.', name);103      var noInstanceContextTypes = !instance.contextTypes;104      warning(noInstanceContextTypes, 'contextTypes was defined as an instance property on %s. Use a static ' + 'property to define contextTypes instead.', name);105      var noComponentShouldUpdate = typeof instance.componentShouldUpdate !== 'function';106      warning(noComponentShouldUpdate, '%s has a method called ' + 'componentShouldUpdate(). Did you mean shouldComponentUpdate()? ' + 'The name is phrased as a question because the function is ' + 'expected to return a value.', name);107      var noComponentDidUnmount = typeof instance.componentDidUnmount !== 'function';108      warning(noComponentDidUnmount, '%s has a method called ' + 'componentDidUnmount(). But there is no such lifecycle method. ' + 'Did you mean componentWillUnmount()?', name);109      var noComponentWillRecieveProps = typeof instance.componentWillRecieveProps !== 'function';110      warning(noComponentWillRecieveProps, '%s has a method called ' + 'componentWillRecieveProps(). Did you mean componentWillReceiveProps()?', name);111      var hasMutatedProps = instance.props !== workInProgress.pendingProps;112      warning(instance.props === undefined || !hasMutatedProps, '%s(...): When calling super() in `%s`, make sure to pass ' + "up the same props that your component's constructor was passed.", name, name);113    }114    var state = instance.state;115    if (state && (typeof state !== 'object' || isArray(state))) {116      invariant(false, '%s.state: must be set to an object or null', getComponentName(workInProgress));117    }118    if (typeof instance.getChildContext === 'function') {119      invariant(typeof workInProgress.type.childContextTypes === 'object', '%s.getChildContext(): childContextTypes must be defined in order to ' + 'use getChildContext().', getComponentName(workInProgress));120    }121  }122  function resetInputPointers(workInProgress, instance) {123    instance.props = workInProgress.memoizedProps;124    instance.state = workInProgress.memoizedState;125  }126  function adoptClassInstance(workInProgress, instance) {127    instance.updater = updater;128    workInProgress.stateNode = instance;129    ReactInstanceMap.set(instance, workInProgress);130  }131  function constructClassInstance(workInProgress) {132    var ctor = workInProgress.type;133    var props = workInProgress.pendingProps;134    var unmaskedContext = getUnmaskedContext(workInProgress);135    var needsContext = isContextConsumer(workInProgress);136    var context = needsContext ? getMaskedContext(workInProgress, unmaskedContext) : emptyObject;137    var instance = new ctor(props, context);138    adoptClassInstance(workInProgress, instance);139    checkClassInstance(workInProgress);140    if (needsContext) {141      cacheContext(workInProgress, unmaskedContext, context);142    }143    return instance;144  }145  function mountClassInstance(workInProgress, priorityLevel) {146    var instance = workInProgress.stateNode;147    var state = instance.state || null;148    var props = workInProgress.pendingProps;149    invariant(props, 'There must be pending props for an initial mount. This error is ' + 'likely caused by a bug in React. Please file an issue.');150    var unmaskedContext = getUnmaskedContext(workInProgress);151    instance.props = props;152    instance.state = state;153    instance.refs = emptyObject;...

9e414cdc41339f6d97afa97ee02662d625b7a9ReactFiberClassComponent.js

Source:9e414cdc41339f6d97afa97ee02662d625b7a9ReactFiberClassComponent.js

...87      return !shallowEqual(oldProps, newProps) || !shallowEqual(oldState, newState);88    }89    return true;90  }91  function checkClassInstance(workInProgress) {92    var instance = workInProgress.stateNode;93    if (__DEV__) {94      var name = getComponentName(workInProgress);95      var renderPresent = instance.render;96      warning(renderPresent, '%s(...): No `render` method found on the returned component ' + 'instance: you may have forgotten to define `render`.', name);97      var noGetInitialStateOnES6 = !instance.getInitialState || instance.getInitialState.isReactClassApproved || instance.state;98      warning(noGetInitialStateOnES6, 'getInitialState was defined on %s, a plain JavaScript class. ' + 'This is only supported for classes created using React.createClass. ' + 'Did you mean to define a state property instead?', name);99      var noGetDefaultPropsOnES6 = !instance.getDefaultProps || instance.getDefaultProps.isReactClassApproved;100      warning(noGetDefaultPropsOnES6, 'getDefaultProps was defined on %s, a plain JavaScript class. ' + 'This is only supported for classes created using React.createClass. ' + 'Use a static property to define defaultProps instead.', name);101      var noInstancePropTypes = !instance.propTypes;102      warning(noInstancePropTypes, 'propTypes was defined as an instance property on %s. Use a static ' + 'property to define propTypes instead.', name);103      var noInstanceContextTypes = !instance.contextTypes;104      warning(noInstanceContextTypes, 'contextTypes was defined as an instance property on %s. Use a static ' + 'property to define contextTypes instead.', name);105      var noComponentShouldUpdate = typeof instance.componentShouldUpdate !== 'function';106      warning(noComponentShouldUpdate, '%s has a method called ' + 'componentShouldUpdate(). Did you mean shouldComponentUpdate()? ' + 'The name is phrased as a question because the function is ' + 'expected to return a value.', name);107      var noComponentDidUnmount = typeof instance.componentDidUnmount !== 'function';108      warning(noComponentDidUnmount, '%s has a method called ' + 'componentDidUnmount(). But there is no such lifecycle method. ' + 'Did you mean componentWillUnmount()?', name);109      var noComponentWillRecieveProps = typeof instance.componentWillRecieveProps !== 'function';110      warning(noComponentWillRecieveProps, '%s has a method called ' + 'componentWillRecieveProps(). Did you mean componentWillReceiveProps()?', name);111      var hasMutatedProps = instance.props !== workInProgress.pendingProps;112      warning(instance.props === undefined || !hasMutatedProps, '%s(...): When calling super() in `%s`, make sure to pass ' + "up the same props that your component's constructor was passed.", name, name);113    }114    var state = instance.state;115    if (state && (typeof state !== 'object' || isArray(state))) {116      invariant(false, '%s.state: must be set to an object or null', getComponentName(workInProgress));117    }118    if (typeof instance.getChildContext === 'function') {119      invariant(typeof workInProgress.type.childContextTypes === 'object', '%s.getChildContext(): childContextTypes must be defined in order to ' + 'use getChildContext().', getComponentName(workInProgress));120    }121  }122  function resetInputPointers(workInProgress, instance) {123    instance.props = workInProgress.memoizedProps;124    instance.state = workInProgress.memoizedState;125  }126  function adoptClassInstance(workInProgress, instance) {127    instance.updater = updater;128    workInProgress.stateNode = instance;129    ReactInstanceMap.set(instance, workInProgress);130  }131  function constructClassInstance(workInProgress) {132    var ctor = workInProgress.type;133    var props = workInProgress.pendingProps;134    var unmaskedContext = getUnmaskedContext(workInProgress);135    var needsContext = isContextConsumer(workInProgress);136    var context = needsContext ? getMaskedContext(workInProgress, unmaskedContext) : emptyObject;137    var instance = new ctor(props, context);138    adoptClassInstance(workInProgress, instance);139    checkClassInstance(workInProgress);140    if (needsContext) {141      cacheContext(workInProgress, unmaskedContext, context);142    }143    return instance;144  }145  function mountClassInstance(workInProgress, priorityLevel) {146    var instance = workInProgress.stateNode;147    var state = instance.state || null;148    var props = workInProgress.pendingProps;149    invariant(props, 'There must be pending props for an initial mount. This error is ' + 'likely caused by a bug in React. Please file an issue.');150    var unmaskedContext = getUnmaskedContext(workInProgress);151    instance.props = props;152    instance.state = state;153    instance.refs = emptyObject;...

e5881c9fce00eba262a698b097b520392b5a8eReactFiberClassComponent.js

Source:e5881c9fce00eba262a698b097b520392b5a8eReactFiberClassComponent.js

...87      return !shallowEqual(oldProps, newProps) || !shallowEqual(oldState, newState);88    }89    return true;90  }91  function checkClassInstance(workInProgress) {92    var instance = workInProgress.stateNode;93    if (__DEV__) {94      var name = getComponentName(workInProgress);95      var renderPresent = instance.render;96      warning(renderPresent, '%s(...): No `render` method found on the returned component ' + 'instance: you may have forgotten to define `render`.', name);97      var noGetInitialStateOnES6 = !instance.getInitialState || instance.getInitialState.isReactClassApproved || instance.state;98      warning(noGetInitialStateOnES6, 'getInitialState was defined on %s, a plain JavaScript class. ' + 'This is only supported for classes created using React.createClass. ' + 'Did you mean to define a state property instead?', name);99      var noGetDefaultPropsOnES6 = !instance.getDefaultProps || instance.getDefaultProps.isReactClassApproved;100      warning(noGetDefaultPropsOnES6, 'getDefaultProps was defined on %s, a plain JavaScript class. ' + 'This is only supported for classes created using React.createClass. ' + 'Use a static property to define defaultProps instead.', name);101      var noInstancePropTypes = !instance.propTypes;102      warning(noInstancePropTypes, 'propTypes was defined as an instance property on %s. Use a static ' + 'property to define propTypes instead.', name);103      var noInstanceContextTypes = !instance.contextTypes;104      warning(noInstanceContextTypes, 'contextTypes was defined as an instance property on %s. Use a static ' + 'property to define contextTypes instead.', name);105      var noComponentShouldUpdate = typeof instance.componentShouldUpdate !== 'function';106      warning(noComponentShouldUpdate, '%s has a method called ' + 'componentShouldUpdate(). Did you mean shouldComponentUpdate()? ' + 'The name is phrased as a question because the function is ' + 'expected to return a value.', name);107      var noComponentDidUnmount = typeof instance.componentDidUnmount !== 'function';108      warning(noComponentDidUnmount, '%s has a method called ' + 'componentDidUnmount(). But there is no such lifecycle method. ' + 'Did you mean componentWillUnmount()?', name);109      var noComponentWillRecieveProps = typeof instance.componentWillRecieveProps !== 'function';110      warning(noComponentWillRecieveProps, '%s has a method called ' + 'componentWillRecieveProps(). Did you mean componentWillReceiveProps()?', name);111      var hasMutatedProps = instance.props !== workInProgress.pendingProps;112      warning(instance.props === undefined || !hasMutatedProps, '%s(...): When calling super() in `%s`, make sure to pass ' + "up the same props that your component's constructor was passed.", name, name);113    }114    var state = instance.state;115    if (state && (typeof state !== 'object' || isArray(state))) {116      invariant(false, '%s.state: must be set to an object or null', getComponentName(workInProgress));117    }118    if (typeof instance.getChildContext === 'function') {119      invariant(typeof workInProgress.type.childContextTypes === 'object', '%s.getChildContext(): childContextTypes must be defined in order to ' + 'use getChildContext().', getComponentName(workInProgress));120    }121  }122  function resetInputPointers(workInProgress, instance) {123    instance.props = workInProgress.memoizedProps;124    instance.state = workInProgress.memoizedState;125  }126  function adoptClassInstance(workInProgress, instance) {127    instance.updater = updater;128    workInProgress.stateNode = instance;129    ReactInstanceMap.set(instance, workInProgress);130  }131  function constructClassInstance(workInProgress) {132    var ctor = workInProgress.type;133    var props = workInProgress.pendingProps;134    var unmaskedContext = getUnmaskedContext(workInProgress);135    var needsContext = isContextConsumer(workInProgress);136    var context = needsContext ? getMaskedContext(workInProgress, unmaskedContext) : emptyObject;137    var instance = new ctor(props, context);138    adoptClassInstance(workInProgress, instance);139    checkClassInstance(workInProgress);140    if (needsContext) {141      cacheContext(workInProgress, unmaskedContext, context);142    }143    return instance;144  }145  function mountClassInstance(workInProgress, priorityLevel) {146    var instance = workInProgress.stateNode;147    var state = instance.state || null;148    var props = workInProgress.pendingProps;149    invariant(props, 'There must be pending props for an initial mount. This error is ' + 'likely caused by a bug in React. Please file an issue.');150    var unmaskedContext = getUnmaskedContext(workInProgress);151    instance.props = props;152    instance.state = state;153    instance.refs = emptyObject;...

706c91bbe84d371db8fa7782ebd2a4dc0de511ReactFiberClassComponent.js

Source:706c91bbe84d371db8fa7782ebd2a4dc0de511ReactFiberClassComponent.js

...87      return !shallowEqual(oldProps, newProps) || !shallowEqual(oldState, newState);88    }89    return true;90  }91  function checkClassInstance(workInProgress) {92    var instance = workInProgress.stateNode;93    if (__DEV__) {94      var name = getComponentName(workInProgress);95      var renderPresent = instance.render;96      warning(renderPresent, '%s(...): No `render` method found on the returned component ' + 'instance: you may have forgotten to define `render`.', name);97      var noGetInitialStateOnES6 = !instance.getInitialState || instance.getInitialState.isReactClassApproved || instance.state;98      warning(noGetInitialStateOnES6, 'getInitialState was defined on %s, a plain JavaScript class. ' + 'This is only supported for classes created using React.createClass. ' + 'Did you mean to define a state property instead?', name);99      var noGetDefaultPropsOnES6 = !instance.getDefaultProps || instance.getDefaultProps.isReactClassApproved;100      warning(noGetDefaultPropsOnES6, 'getDefaultProps was defined on %s, a plain JavaScript class. ' + 'This is only supported for classes created using React.createClass. ' + 'Use a static property to define defaultProps instead.', name);101      var noInstancePropTypes = !instance.propTypes;102      warning(noInstancePropTypes, 'propTypes was defined as an instance property on %s. Use a static ' + 'property to define propTypes instead.', name);103      var noInstanceContextTypes = !instance.contextTypes;104      warning(noInstanceContextTypes, 'contextTypes was defined as an instance property on %s. Use a static ' + 'property to define contextTypes instead.', name);105      var noComponentShouldUpdate = typeof instance.componentShouldUpdate !== 'function';106      warning(noComponentShouldUpdate, '%s has a method called ' + 'componentShouldUpdate(). Did you mean shouldComponentUpdate()? ' + 'The name is phrased as a question because the function is ' + 'expected to return a value.', name);107      var noComponentDidUnmount = typeof instance.componentDidUnmount !== 'function';108      warning(noComponentDidUnmount, '%s has a method called ' + 'componentDidUnmount(). But there is no such lifecycle method. ' + 'Did you mean componentWillUnmount()?', name);109      var noComponentWillRecieveProps = typeof instance.componentWillRecieveProps !== 'function';110      warning(noComponentWillRecieveProps, '%s has a method called ' + 'componentWillRecieveProps(). Did you mean componentWillReceiveProps()?', name);111      var hasMutatedProps = instance.props !== workInProgress.pendingProps;112      warning(instance.props === undefined || !hasMutatedProps, '%s(...): When calling super() in `%s`, make sure to pass ' + "up the same props that your component's constructor was passed.", name, name);113    }114    var state = instance.state;115    if (state && (typeof state !== 'object' || isArray(state))) {116      invariant(false, '%s.state: must be set to an object or null', getComponentName(workInProgress));117    }118    if (typeof instance.getChildContext === 'function') {119      invariant(typeof workInProgress.type.childContextTypes === 'object', '%s.getChildContext(): childContextTypes must be defined in order to ' + 'use getChildContext().', getComponentName(workInProgress));120    }121  }122  function resetInputPointers(workInProgress, instance) {123    instance.props = workInProgress.memoizedProps;124    instance.state = workInProgress.memoizedState;125  }126  function adoptClassInstance(workInProgress, instance) {127    instance.updater = updater;128    workInProgress.stateNode = instance;129    ReactInstanceMap.set(instance, workInProgress);130  }131  function constructClassInstance(workInProgress) {132    var ctor = workInProgress.type;133    var props = workInProgress.pendingProps;134    var unmaskedContext = getUnmaskedContext(workInProgress);135    var needsContext = isContextConsumer(workInProgress);136    var context = needsContext ? getMaskedContext(workInProgress, unmaskedContext) : emptyObject;137    var instance = new ctor(props, context);138    adoptClassInstance(workInProgress, instance);139    checkClassInstance(workInProgress);140    if (needsContext) {141      cacheContext(workInProgress, unmaskedContext, context);142    }143    return instance;144  }145  function mountClassInstance(workInProgress, priorityLevel) {146    var instance = workInProgress.stateNode;147    var state = instance.state || null;148    var props = workInProgress.pendingProps;149    invariant(props, 'There must be pending props for an initial mount. This error is ' + 'likely caused by a bug in React. Please file an issue.');150    var unmaskedContext = getUnmaskedContext(workInProgress);151    instance.props = props;152    instance.state = state;153    instance.refs = emptyObject;...

8028026635ab421d8275ec2608e3331b25e7b5ReactFiberClassComponent.js

Source:8028026635ab421d8275ec2608e3331b25e7b5ReactFiberClassComponent.js

...87      return !shallowEqual(oldProps, newProps) || !shallowEqual(oldState, newState);88    }89    return true;90  }91  function checkClassInstance(workInProgress) {92    var instance = workInProgress.stateNode;93    if (__DEV__) {94      var name = getComponentName(workInProgress);95      var renderPresent = instance.render;96      warning(renderPresent, '%s(...): No `render` method found on the returned component ' + 'instance: you may have forgotten to define `render`.', name);97      var noGetInitialStateOnES6 = !instance.getInitialState || instance.getInitialState.isReactClassApproved || instance.state;98      warning(noGetInitialStateOnES6, 'getInitialState was defined on %s, a plain JavaScript class. ' + 'This is only supported for classes created using React.createClass. ' + 'Did you mean to define a state property instead?', name);99      var noGetDefaultPropsOnES6 = !instance.getDefaultProps || instance.getDefaultProps.isReactClassApproved;100      warning(noGetDefaultPropsOnES6, 'getDefaultProps was defined on %s, a plain JavaScript class. ' + 'This is only supported for classes created using React.createClass. ' + 'Use a static property to define defaultProps instead.', name);101      var noInstancePropTypes = !instance.propTypes;102      warning(noInstancePropTypes, 'propTypes was defined as an instance property on %s. Use a static ' + 'property to define propTypes instead.', name);103      var noInstanceContextTypes = !instance.contextTypes;104      warning(noInstanceContextTypes, 'contextTypes was defined as an instance property on %s. Use a static ' + 'property to define contextTypes instead.', name);105      var noComponentShouldUpdate = typeof instance.componentShouldUpdate !== 'function';106      warning(noComponentShouldUpdate, '%s has a method called ' + 'componentShouldUpdate(). Did you mean shouldComponentUpdate()? ' + 'The name is phrased as a question because the function is ' + 'expected to return a value.', name);107      var noComponentDidUnmount = typeof instance.componentDidUnmount !== 'function';108      warning(noComponentDidUnmount, '%s has a method called ' + 'componentDidUnmount(). But there is no such lifecycle method. ' + 'Did you mean componentWillUnmount()?', name);109      var noComponentWillRecieveProps = typeof instance.componentWillRecieveProps !== 'function';110      warning(noComponentWillRecieveProps, '%s has a method called ' + 'componentWillRecieveProps(). Did you mean componentWillReceiveProps()?', name);111      var hasMutatedProps = instance.props !== workInProgress.pendingProps;112      warning(instance.props === undefined || !hasMutatedProps, '%s(...): When calling super() in `%s`, make sure to pass ' + "up the same props that your component's constructor was passed.", name, name);113    }114    var state = instance.state;115    if (state && (typeof state !== 'object' || isArray(state))) {116      invariant(false, '%s.state: must be set to an object or null', getComponentName(workInProgress));117    }118    if (typeof instance.getChildContext === 'function') {119      invariant(typeof workInProgress.type.childContextTypes === 'object', '%s.getChildContext(): childContextTypes must be defined in order to ' + 'use getChildContext().', getComponentName(workInProgress));120    }121  }122  function resetInputPointers(workInProgress, instance) {123    instance.props = workInProgress.memoizedProps;124    instance.state = workInProgress.memoizedState;125  }126  function adoptClassInstance(workInProgress, instance) {127    instance.updater = updater;128    workInProgress.stateNode = instance;129    ReactInstanceMap.set(instance, workInProgress);130  }131  function constructClassInstance(workInProgress) {132    var ctor = workInProgress.type;133    var props = workInProgress.pendingProps;134    var unmaskedContext = getUnmaskedContext(workInProgress);135    var needsContext = isContextConsumer(workInProgress);136    var context = needsContext ? getMaskedContext(workInProgress, unmaskedContext) : emptyObject;137    var instance = new ctor(props, context);138    adoptClassInstance(workInProgress, instance);139    checkClassInstance(workInProgress);140    if (needsContext) {141      cacheContext(workInProgress, unmaskedContext, context);142    }143    return instance;144  }145  function mountClassInstance(workInProgress, priorityLevel) {146    var instance = workInProgress.stateNode;147    var state = instance.state || null;148    var props = workInProgress.pendingProps;149    invariant(props, 'There must be pending props for an initial mount. This error is ' + 'likely caused by a bug in React. Please file an issue.');150    var unmaskedContext = getUnmaskedContext(workInProgress);151    instance.props = props;152    instance.state = state;153    instance.refs = emptyObject;...

ReactFiberClassComponent.js

Source:ReactFiberClassComponent.js

...94      );95    }96    return true;97  }98  function checkClassInstance(workInProgress: Fiber) {99    const instance = workInProgress.stateNode;100    if (__DEV__) {101      const name = getComponentName(workInProgress);102      const renderPresent = instance.render;103      warning(104        renderPresent,105        '%s(...): No `render` method found on the returned component ' +106        'instance: you may have forgotten to define `render`.',107        name108      );109      const noGetInitialStateOnES6 = (110        !instance.getInitialState ||111        instance.getInitialState.isReactClassApproved112      );113      warning(114        noGetInitialStateOnES6,115        'getInitialState was defined on %s, a plain JavaScript class. ' +116        'This is only supported for classes created using React.createClass. ' +117        'Did you mean to define a state property instead?',118        name119      );120      const noGetDefaultPropsOnES6 = (121        !instance.getDefaultProps ||122        instance.getDefaultProps.isReactClassApproved123      );124      warning(125        noGetDefaultPropsOnES6,126        'getDefaultProps was defined on %s, a plain JavaScript class. ' +127        'This is only supported for classes created using React.createClass. ' +128        'Use a static property to define defaultProps instead.',129        name130      );131      const noInstancePropTypes = !instance.propTypes;132      warning(133        noInstancePropTypes,134        'propTypes was defined as an instance property on %s. Use a static ' +135        'property to define propTypes instead.',136        name,137      );138      const noInstanceContextTypes = !instance.contextTypes;139      warning(140        noInstanceContextTypes,141        'contextTypes was defined as an instance property on %s. Use a static ' +142        'property to define contextTypes instead.',143        name,144      );145      const noComponentShouldUpdate = typeof instance.componentShouldUpdate !== 'function';146      warning(147        noComponentShouldUpdate,148        '%s has a method called ' +149        'componentShouldUpdate(). Did you mean shouldComponentUpdate()? ' +150        'The name is phrased as a question because the function is ' +151        'expected to return a value.',152        name153      );154      const noComponentDidUnmount = typeof instance.componentDidUnmount !== 'function';155      warning(156        noComponentDidUnmount,157        '%s has a method called ' +158        'componentDidUnmount(). But there is no such lifecycle method. ' +159        'Did you mean componentWillUnmount()?',160        name161      );162      const noComponentWillRecieveProps = typeof instance.componentWillRecieveProps !== 'function';163      warning(164        noComponentWillRecieveProps,165        '%s has a method called ' +166        'componentWillRecieveProps(). Did you mean componentWillReceiveProps()?',167        name168      );169    }170    const state = instance.state;171    if (state && (typeof state !== 'object' || isArray(state))) {172      invariant(173        false,174        '%s.state: must be set to an object or null',175        getComponentName(workInProgress)176      );177    }178    if (typeof instance.getChildContext === 'function') {179      invariant(180        typeof workInProgress.type.childContextTypes === 'object',181        '%s.getChildContext(): childContextTypes must be defined in order to ' +182        'use getChildContext().',183        getComponentName(workInProgress)184      );185    }186  }187  function adoptClassInstance(workInProgress : Fiber, instance : any) : void {188    instance.updater = updater;189    workInProgress.stateNode = instance;190    // The instance needs access to the fiber so that it can schedule updates191    ReactInstanceMap.set(instance, workInProgress);192  }193  function constructClassInstance(workInProgress : Fiber) : any {194    const ctor = workInProgress.type;195    const props = workInProgress.pendingProps;196    const context = getMaskedContext(workInProgress);197    const instance = new ctor(props, context);198    adoptClassInstance(workInProgress, instance);199    checkClassInstance(workInProgress);200    return instance;201  }202  // Invokes the mount life-cycles on a previously never rendered instance.203  function mountClassInstance(workInProgress : Fiber) : void {204    const instance = workInProgress.stateNode;205    const state = instance.state || null;206    let props = workInProgress.pendingProps;207    if (!props) {208      throw new Error('There must be pending props for an initial mount.');209    }210    instance.props = props;211    instance.state = state;212    instance.context = getMaskedContext(workInProgress);213    if (typeof instance.componentWillMount === 'function') {...

Using AI Code Generation

1const { checkClassInstance } = require('playwright/lib/utils/utils');2const { Page } = require('playwright/lib/page');3const { BrowserContext } = require('playwright/lib/browserContext');4const { Browser } = require('playwright/lib/browser');5checkClassInstance(Page, page);6checkClassInstance(BrowserContext, context);7checkClassInstance(Browser, browser);8const { checkIsPublicAPI } = require('playwright/lib/utils/utils');9checkIsPublicAPI('Page', 'page');10checkIsPublicAPI('BrowserContext', 'context');11checkIsPublicAPI('Browser', 'browser');12const { checkIsPublicAPI } = require('playwright/lib/utils/utils');13checkIsPublicAPI('Page', 'page');14checkIsPublicAPI('BrowserContext', 'context');15checkIsPublicAPI('Browser', 'browser');16const { checkIsPublicAPI } = require('playwright/lib/utils/utils');17checkIsPublicAPI('Page', 'page');18checkIsPublicAPI('BrowserContext', 'context');19checkIsPublicAPI('Browser', 'browser');20const { checkIsPublicAPI } = require('playwright/lib/utils/utils');21checkIsPublicAPI('Page', 'page');22checkIsPublicAPI('BrowserContext', 'context');23checkIsPublicAPI('Browser', 'browser');24const { checkIsPublicAPI } = require('playwright/lib/utils/utils');25checkIsPublicAPI('Page', 'page');26checkIsPublicAPI('BrowserContext', 'context');27checkIsPublicAPI('Browser', 'browser');28const { checkIsPublicAPI } = require('playwright/lib/utils/utils');29checkIsPublicAPI('Page', 'page');30checkIsPublicAPI('BrowserContext', 'context');31checkIsPublicAPI('Browser', 'browser');32const { checkIsPublicAPI } = require('playwright/lib/utils/utils');33checkIsPublicAPI('Page', 'page');34checkIsPublicAPI('BrowserContext

Using AI Code Generation

1const { checkClassInstance } = require('playwright/lib/utils/utils');2const { Page } = require('playwright/lib/page');3const { BrowserContext } = require('playwright/lib/browserContext');4const { Browser } = require('playwright/lib/browser');5checkClassInstance(Page, page);6checkClassInstance(BrowserContext, context);7checkClassInstance(Browser, browser);8const { checkIsPublicAPI } = require('playwright/lib/utils/utils');9checkIsPublicAPI('Page', 'page');10checkIsPublicAPI('BrowserContext', 'context');11checkIsPublicAPI('Browser', 'browser');12const { checkIsPublicAPI } = require('playwright/lib/utils/utils');13checkIsPublicAPI('Page', 'page');14checkIsPublicAPI('BrowserContext', 'context');15checkIsPublicAPI('Browser', 'browser');16const { checkIsPublicAPI } = require('playwright/lib/utils/utils');17checkIsPublicAPI('Page', 'page');18checkIsPublicAPI('BrowserContext', 'context');19checkIsPublicAPI('Browser', 'browser');20const { checkIsPublicAPI } = require('playwright/lib/utils/utils');21checkIsPublicAPI('Page', 'page');22checkIsPublicAPI('BrowserContext', 'context');23checkIsPublicAPI('Browser', 'browser');24const { checkIsPublicAPI } = require('playwright/lib/utils/utils');25checkIsPublicAPI('Page', 'page');26checkIsPublicAPI('BrowserContext', 'context');27checkIsPublicAPI('Browser', 'browser');28const { checkIsPublicAPI } = require('playwright/lib/utils/utils');29checkIsPublicAPI('Page', 'page');30checkIsPublicAPI('BrowserContext', 'context');31checkIsPublicAPI('Browser', 'browser');32const { checkIsPublicAPI } = require('playwright/lib/utils/utils');33checkIsPublicAPI('Page', 'page');34checkIsPublicAPI('BrowserContext

Using AI Code Generation

1const { checkClassInstance } = require('playwright');2const { chromium } = require('playwright');3(async () => {4  const browser = await chromium.launch();5  const page = await browser.newPage();6  checkClassInstance(page, 'Page', 'page');7  await browser.close();8})();9    at Object.checkClassInstance (/Users/username/playwright/test.js:5:5)10    at async Object.<anonymous> (/Users/username/playwright/test.js:14:1)

Using AI Code Generation

1const { checkClassInstance } = require('playwright/lib/utils/utils');2const { Page } = require('playwright/lib/server/page');3const page = new Page();4const page = new Page();ge');5console.lo('succss6con(t { checkTyp' } =srequire('playwright/lib/utils/utils');7uccesType('string', 'string');8console.log('success');

Using AI Code Generation

1const { checkClassInstance } = require('playwright/lib/utils/utils');2const { Page } = require('playwright/lib/client/page');3const { Browser } = require('playwright/lib/client/browser'); 4const { BrowserContext } = require('playwright/lib/client/browserContext');5const { BrowserType } = require('playwright/lib/client/browserType');6const page = new Page();7const browser = new Browser();8const browserContext = new BrowserContext();9const browserType = new BrowserType();10checkClassInstance(page, Page, 'page');11checkClassInstance(browser, Browser, 'browser');12checkClassInstance(browserContext, BrowserContext, 'browserContext');13checkClassInstance(browserType, BrowserType, 'browserType');14const { checkType } = require('playwright/lib/utils/utils');15checkType('string', 'string', 'string');16checkType('number', 1, 'number');17checkType('boolean', true, 'boolean');18checkType('function', function() {}, 'function');19checkType('object', {}, 'object');20checkType('array', [], 'array');21checkType('null', null, 'null');22checkType('undefined', undefined, 'undefined');23const { checkNullableType } = require('playwright/lib/utils/utils');24checkNullableType('string', 'string', 'string');25checkNullableType('number', 1, 'number');26checkNullableType('boolean', true, 'boolean');27checkNullableType('function', function() {}, 'function');28checkNullableType('object', {}, 'object');29checkNullableType('array', [], 'array');30checkNullableType('null', null, 'null');31checkNullableType('undefined', undefined, 'undefined');32const { checkEnumValue } = require('playwright/lib/utils/utils');33checkEnumValue('string', 'string', 'string');34checkEnumValue('number', 1, 'number');35checkEnumValue('boolean', true, 'boolean');36checkEnumValue('function', function() {}, 'function');37checkEnumValue('object', {}, 'object');38checkEnumValue('array', [], 'array');39checkEnumValue('null', null, 'null');40checkEnumValue('undefined', undefined, 'undefined');41const { debugLogger } = require('playwright/lib/utils/debugLogger');42debugLogger('debug', 'message');43const { getFromENV } = require('playwright/lib/utils/utils');44console.log(getFromENV('PLAYWRIGHT_BROWSERS_PATH'));45console.log(getFromENV('PLAYWRIGHT_BROWSERS_PATH', 'custom-path'));

Using AI Code Generation

1const { checkClassInstance } = require('playwright/lib/utils/utils');2const { Page } = require('playwright/lib/server/page');3checkClassInstance(page, Page, 'page');4const { checkType } = require('playwright/lib/utils/utils');5checkType('string', 'string');6console.log('success');7er/page');8checkClassInstance(page, Page, 'page');

Using AI Code Generation

1const { checkClassInstance } = requir('@playwight/test/lib/utilsutils');2checkClassInstance(page, 'Page');3checkClassInstance(page, 'Frame');4checkClassInstance(age, 'ElementHandle');5const { checkClassInstance } = requir('playwright6Run the test script using' age');7checkClassInstance(pnode 'Framet);8checkClassInstance(este, 'ElementHandl.js 9    at checkClassInstance (playwright\lib\utils\utils.js:11:22)10const { debugLogger } = require('playwright/lib/utils/debugLogger');11debugLogger('debug', 'message');12const { getFromENV } = require('playwright/lib/utils/utils');13console.log(getFromENV('PLAYWRIGHT_BROWSERS_PATH'));14console.log(getFromENV('PLAYWRIGHT_BROWSERS_PATH', 'custom-path'));

Using AI Code Generation

1const { checkClassInstance } = require('playwright/lib/utils/utils');2const { Page } = require('playwright/lib/server/page');3checkClassInstance(page, Page, 'page');4const { checkClassInstance } = require('@playwright/test/lib/utils/utils');5const { Page } = require('@playwright/test/lib/server/page');6checkClassInstance(page, Page, 'page');7const { checkClassInstance } = require('@playwright/test/lib/utils/utils');8const { Page } = require('@playwright/test/lib/server/page');9checkClassInstance(page, Page, 'page');10const { checkClassInstance } = require('@playwright/test/lib/utils/utils');11const { Page } = require('@playwright/test/lib/server/page');12checkClassInstance(page, Page, 'page');13const { checkClassInstance } = require('@playwright/test/lib/utils/utils');14const { Page } = require('@playwright/test/lib/server/page');15checkClassInstance(page, Page, 'page');

Using AI Code Generation

1const { checkClassInstance } = require('@playwright/test/lib/utils/utils');2checkClassInstance(page, 'Page');3checkClassInstance(page, 'Frame');4checkClassInstance(page, 'ElementHandle');5const { checkClassInstance } = require('playwright');6checkClassInstance(page, 'Page');7checkClassInstance(page, 'Frame');8checkClassInstance(page, 'ElementHandle');9    at checkClassInstance (playwright\lib\utils\utils.js:11:22)

Using AI Code Generation

1const { checkClassInstance } = require('@playwright/test/lib/server/frames');2const { Page } = require('@playwright/test');3const page = new Page();4const element = await page.$('div');5const { checkClassInstance } = require('@playwright/test/lib/server/frames');6const { Page } = require('@playwright/test');7const page = new Page();8const element = await page.$('div');9const { checkClassInstance } = require('@playwright/test/lib/server/frames');10const { Page } = require('@playwright/test');11const page = new Page();12const element = await page.$('div');13const { checkClassInstance } = require('@playwright/test/lib/server/frames');14const { Page } = require('@playwright/test');15const page = new Page();16const element = await page.$('div');17const { checkClassInstance } = require('@playwright/test/lib/server/frames');18const { Page } = require('@playwright/test');19const page = new Page();20const element = await page.$('div');

Using AI Code Generation

1const { checkClassInstance } = require('playwright/lib/internal/stackTrace');2checkClassInstance(page, 'Page', 'page');3const { checkClassInstance } = require('playwright/lib/internal/stackTrace');4checkClassInstance(page, 'Page', 'page');5const { checkClassInstance } = require('playwright/lib/internal/stackTrace');6checkClassInstance(page, 'Page', 'page');7const { checkClassInstance } = require('playwright/lib/internal/stackTrace');8checkClassInstance(page, 'Page', 'page');9const { checkClassInstance } = require('playwright/lib/internal/stackTrace');10checkClassInstance(page, 'Page', 'page');11const { checkClassInstance } = require('playwright/lib/internal/stackTrace');12checkClassInstance(page, 'Page', 'page');13const { checkClassInstance } = require('playwright/lib/internal/stackTrace');14checkClassInstance(page, 'Page', 'page');15const { checkClassInstance } = require('playwright/lib/internal/stackTrace');16checkClassInstance(page, 'Page', 'page');17const { checkClassInstance } = require('playwright/lib/internal/stackTrace');18checkClassInstance(page, 'Page', 'page');19const { checkClassInstance } = require('playwright

Playwright tutorial

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

Chapters:

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