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React from 'react';\nimport invariant from '../utils/invariant';\nimport ThemeContext from '../views/ThemeContext';\n\nfunction createNavigator(NavigatorView, router, navigationConfig) {\n  class Navigator extends React.Component {\n    static contextType = ThemeContext;\n    static router = router;\n    static navigationOptions = navigationConfig.navigationOptions;\n\n    constructor(props, context) {\n      super(props, context);\n\n      this.state = {\n        descriptors: {},\n        screenProps: this.props.screenProps,\n        theme: context,\n        themeContext: context,\n      };\n    }\n\n    static getDerivedStateFromProps(nextProps, currentState) {\n      const prevDescriptors = currentState.descriptors;\n      const { navigation, screenProps } = nextProps;\n      invariant(\n        navigation != null,\n        'The navigation prop is missing for this navigator. In react-navigation 3 you must set up your app container directly. More info: https://reactnavigation.org/docs/en/app-containers.html'\n      );\n      const { state } = navigation;\n      const { routes } = state;\n      if (typeof routes === 'undefined') {\n        throw new TypeError(\n          'No \"routes\" found in navigation state. Did you try to pass the navigation prop of a React component to a Navigator child? See https://reactnavigation.org/docs/en/custom-navigators.html#navigator-navigation-prop'\n        );\n      }\n\n      const descriptors = routes.reduce((acc, route) => {\n        if (\n          prevDescriptors &&\n          prevDescriptors[route.key] &&\n          route === prevDescriptors[route.key].state &&\n          screenProps === currentState.screenProps &&\n          currentState.themeContext === currentState.theme\n        ) {\n          acc[route.key] = prevDescriptors[route.key];\n          return acc;\n        }\n        const getComponent = router.getComponentForRouteName.bind(\n          null,\n          route.routeName\n        );\n        const childNavigation = navigation.getChildNavigation(route.key);\n        const options = router.getScreenOptions(\n          childNavigation,\n          screenProps,\n          currentState.themeContext\n        );\n        acc[route.key] = {\n          key: route.key,\n          getComponent,\n          options,\n          state: route,\n          navigation: childNavigation,\n        };\n        return acc;\n      }, {});\n\n      return { descriptors, screenProps, theme: state.themeContext };\n    }\n\n    componentDidUpdate() {\n      if (this.context !== this.state.themeContext) {\n        // eslint-disable-next-line react/no-did-update-set-state\n        this.setState({ themeContext: this.context });\n      }\n    }\n\n    render() {\n      return (\n        <NavigatorView\n          {...this.props}\n          screenProps={this.state.screenProps}\n          navigation={this.props.navigation}\n          navigationConfig={navigationConfig}\n          descriptors={this.state.descriptors}\n        />\n      );\n    }\n  }\n\n  return Navigator;\n}\n\nexport default createNavigator;\n"]},"metadata":{},"sourceType":"script"}