@react-navigation/core/lib/typescript/src/types.d.ts

import type { DefaultRouterOptions, InitialState, NavigationAction, NavigationState, ParamListBase, PartialState, Route } from '@react-navigation/routers';
import type * as React from 'react';
declare global {
    namespace ReactNavigation {
        interface RootParamList {
        }
    }
}
declare type Keyof<T extends {}> = Extract<keyof T, string>;
export declare type DefaultNavigatorOptions<ParamList extends ParamListBase, State extends NavigationState, ScreenOptions extends {}, EventMap extends EventMapBase> = DefaultRouterOptions<Keyof<ParamList>> & {
    /**
     * Children React Elements to extract the route configuration from.
     * Only `Screen`, `Group` and `React.Fragment` are supported as children.
     */
    children: React.ReactNode;
    /**
     * Event listeners for all the screens in the navigator.
     */
    screenListeners?: ScreenListeners<State, EventMap> | ((props: {
        route: RouteProp<ParamList>;
        navigation: any;
    }) => ScreenListeners<State, EventMap>);
    /**
     * Default options for all screens under this navigator.
     */
    screenOptions?: ScreenOptions | ((props: {
        route: RouteProp<ParamList>;
        navigation: any;
    }) => ScreenOptions);
    /**
     * Default options specified by the navigator.
     * It receives the custom options in the arguments if a function is specified.
     */
    defaultScreenOptions?: ScreenOptions | ((props: {
        route: RouteProp<ParamList>;
        navigation: any;
        options: ScreenOptions;
    }) => ScreenOptions);
};
export declare type EventMapBase = Record<string, {
    data?: any;
    canPreventDefault?: boolean;
}>;
export declare type EventMapCore<State extends NavigationState> = {
    focus: {
        data: undefined;
    };
    blur: {
        data: undefined;
    };
    state: {
        data: {
            state: State;
        };
    };
    beforeRemove: {
        data: {
            action: NavigationAction;
        };
        canPreventDefault: true;
    };
};
export declare type EventArg<EventName extends string, CanPreventDefault extends boolean | undefined = false, Data = undefined> = {
    /**
     * Type of the event (e.g. `focus`, `blur`)
     */
    readonly type: EventName;
    readonly target?: string;
} & (CanPreventDefault extends true ? {
    /**
     * Whether `event.preventDefault()` was called on this event object.
     */
    readonly defaultPrevented: boolean;
    /**
     * Prevent the default action which happens on this event.
     */
    preventDefault(): void;
} : {}) & (undefined extends Data ? {
    readonly data?: Readonly<Data>;
} : {
    readonly data: Readonly<Data>;
});
export declare type EventListenerCallback<EventMap extends EventMapBase, EventName extends keyof EventMap> = (e: EventArg<Extract<EventName, string>, EventMap[EventName]['canPreventDefault'], EventMap[EventName]['data']>) => void;
export declare type EventConsumer<EventMap extends EventMapBase> = {
    /**
     * Subscribe to events from the parent navigator.
     *
     * @param type Type of the event (e.g. `focus`, `blur`)
     * @param callback Callback listener which is executed upon receiving the event.
     */
    addListener<EventName extends Keyof<EventMap>>(type: EventName, callback: EventListenerCallback<EventMap, EventName>): () => void;
    removeListener<EventName extends Keyof<EventMap>>(type: EventName, callback: EventListenerCallback<EventMap, EventName>): void;
};
export declare type EventEmitter<EventMap extends EventMapBase> = {
    /**
     * Emit an event to child screens.
     *
     * @param options.type Type of the event (e.g. `focus`, `blur`)
     * @param [options.data] Optional information regarding the event.
     * @param [options.target] Key of the target route which should receive the event.
     * If not specified, all routes receive the event.
     */
    emit<EventName extends Keyof<EventMap>>(options: {
        type: EventName;
        target?: string;
    } & (EventMap[EventName]['canPreventDefault'] extends true ? {
        canPreventDefault: true;
    } : {}) & (undefined extends EventMap[EventName]['data'] ? {
        data?: EventMap[EventName]['data'];
    } : {
        data: EventMap[EventName]['data'];
    })): EventArg<EventName, EventMap[EventName]['canPreventDefault'], EventMap[EventName]['data']>;
};
export declare class PrivateValueStore<A, B, C> {
    /**
     * UGLY HACK! DO NOT USE THE TYPE!!!
     *
     * TypeScript requires a type to be used to be able to infer it.
     * The type should exist as its own without any operations such as union.
     * So we need to figure out a way to store this type in a property.
     * The problem with a normal property is that it shows up in intelliSense.
     * Adding private keyword works, but the annotation is stripped away in declaration.
     * Turns out if we use an empty string, it doesn't show up in intelliSense.
     */
    protected ''?: {
        a: A;
        b: B;
        c: C;
    };
}
declare type NavigationHelpersCommon<ParamList extends ParamListBase, State extends NavigationState = NavigationState> = {
    /**
     * Dispatch an action or an update function to the router.
     * The update function will receive the current state,
     *
     * @param action Action object or update function.
     */
    dispatch(action: NavigationAction | ((state: State) => NavigationAction)): void;
    /**
     * Navigate to a route in current navigation tree.
     *
     * @param name Name of the route to navigate to.
     * @param [params] Params object for the route.
     */
    navigate<RouteName extends keyof ParamList>(...args: undefined extends ParamList[RouteName] ? [screen: RouteName] | [screen: RouteName, params: ParamList[RouteName]] : [screen: RouteName, params: ParamList[RouteName]]): void;
    /**
     * Navigate to a route in current navigation tree.
     *
     * @param route Object with `key` or `name` for the route to navigate to, and a `params` object.
     */
    navigate<RouteName extends keyof ParamList>(options: {
        key: string;
        params?: ParamList[RouteName];
        merge?: boolean;
    } | {
        name: RouteName;
        key?: string;
        params: ParamList[RouteName];
        merge?: boolean;
    }): void;
    /**
     * Reset the navigation state to the provided state.
     *
     * @param state Navigation state object.
     */
    reset(state: PartialState<State> | State): void;
    /**
     * Go back to the previous route in history.
     */
    goBack(): void;
    /**
     * Check if the screen is focused. The method returns `true` if focused, `false` otherwise.
     * Note that this method doesn't re-render screen when the focus changes. So don't use it in `render`.
     * To get notified of focus changes, use `addListener('focus', cb)` and `addListener('blur', cb)`.
     * To conditionally render content based on focus state, use the `useIsFocused` hook.
     */
    isFocused(): boolean;
    /**
     * Check if dispatching back action will be handled by navigation.
     * Note that this method doesn't re-render screen when the result changes. So don't use it in `render`.
     */
    canGoBack(): boolean;
    /**
     * Returns the navigation prop from the parent navigator,
     */
    getParent<T = NavigationProp<ParamListBase> | undefined>(): T;
    /**
     * Returns the navigator's state.
     * Note that this method doesn't re-render screen when the result changes. So don't use it in `render`.
     */
    getState(): State;
} & PrivateValueStore<ParamList, keyof ParamList, {}>;
export declare type NavigationHelpers<ParamList extends ParamListBase, EventMap extends EventMapBase = {}> = NavigationHelpersCommon<ParamList> & EventEmitter<EventMap> & {
    /**
     * Update the param object for the route.
     * The new params will be shallow merged with the old one.
     *
     * @param params Params object for the current route.
     */
    setParams<RouteName extends keyof ParamList>(params: Partial<ParamList[RouteName]>): void;
};
export declare type NavigationContainerProps = {
    /**
     * Initial navigation state for the child navigators.
     */
    initialState?: InitialState;
    /**
     * Callback which is called with the latest navigation state when it changes.
     */
    onStateChange?: (state: NavigationState | undefined) => void;
    /**
     * Callback which is called when an action is not handled.
     */
    onUnhandledAction?: (action: NavigationAction) => void;
    /**
     * Whether this navigation container should be independent of parent containers.
     * If this is not set to `true`, this container cannot be nested inside another container.
     * Setting it to `true` disconnects any children navigators from parent container.
     */
    independent?: boolean;
    /**
     * Children elements to render.
     */
    children: React.ReactNode;
};
export declare type NavigationProp<ParamList extends {}, RouteName extends keyof ParamList = Keyof<ParamList>, State extends NavigationState = NavigationState<ParamList>, ScreenOptions extends {} = {}, EventMap extends EventMapBase = {}> = NavigationHelpersCommon<ParamList, State> & {
    /**
     * Update the param object for the route.
     * The new params will be shallow merged with the old one.
     *
     * @param params Params object for the current route.
     */
    setParams(params: Partial<ParamList[RouteName]>): void;
    /**
     * Update the options for the route.
     * The options object will be shallow merged with default options object.
     *
     * @param options Options object for the route.
     */
    setOptions(options: Partial<ScreenOptions>): void;
} & EventConsumer<EventMap & EventMapCore<State>> & PrivateValueStore<ParamList, RouteName, EventMap>;
export declare type RouteProp<ParamList extends ParamListBase, RouteName extends keyof ParamList = Keyof<ParamList>> = Route<Extract<RouteName, string>, ParamList[RouteName]>;
export declare type CompositeNavigationProp<A extends NavigationProp<ParamListBase, string, any, any>, B extends NavigationHelpersCommon<ParamListBase, any>> = Omit<A & B, keyof NavigationProp<any>> & NavigationProp<
/**
 * Param list from both navigation objects needs to be combined
 * For example, we should be able to navigate to screens in both A and B
 */
(A extends NavigationHelpersCommon<infer T> ? T : never) & (B extends NavigationHelpersCommon<infer U> ? U : never), 
/**
 * The route name should refer to the route name specified in the first type
 * Ideally it should work for any of them, but it's not possible to infer that way
 */
A extends NavigationProp<any, infer R> ? R : string, 
/**
 * The type of state should refer to the state specified in the first type
 */
A extends NavigationProp<any, any, infer S> ? S : NavigationState, 
/**
 * Screen options from both navigation objects needs to be combined
 * This allows typechecking `setOptions`
 */
(A extends NavigationProp<any, any, any, infer O> ? O : {}) & (B extends NavigationProp<any, any, any, infer P> ? P : {}), 
/**
 * Event consumer config should refer to the config specified in the first type
 * This allows typechecking `addListener`/`removeListener`
 */
A extends NavigationProp<any, any, any, any, infer E> ? E : {}>;
export declare type CompositeScreenProps<A extends {
    navigation: NavigationProp<ParamListBase, string, any, any>;
    route: RouteProp<ParamListBase>;
}, B extends {
    navigation: NavigationHelpersCommon<ParamListBase, any>;
}> = {
    navigation: CompositeNavigationProp<A['navigation'], B['navigation']>;
    route: A['route'];
};
export declare type Descriptor<ScreenOptions extends {}, Navigation extends NavigationProp<any, any, any, any, any>, Route extends RouteProp<any, any>> = {
    /**
     * Render the component associated with this route.
     */
    render(): JSX.Element;
    /**
     * Options for the route.
     */
    options: ScreenOptions;
    /**
     * Route object for the screen
     */
    route: Route;
    /**
     * Navigation object for the screen
     */
    navigation: Navigation;
};
export declare type ScreenListeners<State extends NavigationState, EventMap extends EventMapBase> = Partial<{
    [EventName in keyof (EventMap & EventMapCore<State>)]: EventListenerCallback<EventMap, EventName>;
}>;
export declare type RouteConfigComponent<ParamList extends ParamListBase, RouteName extends keyof ParamList> = {
    /**
     * React component to render for this screen.
     */
    component: React.ComponentType<any>;
    getComponent?: never;
    children?: never;
} | {
    /**
     * Lazily get a React component to render for this screen.
     */
    getComponent: () => React.ComponentType<any>;
    component?: never;
    children?: never;
} | {
    /**
     * Render callback to render content of this screen.
     */
    children: (props: {
        route: RouteProp<ParamList, RouteName>;
        navigation: any;
    }) => React.ReactNode;
    component?: never;
    getComponent?: never;
};
export declare type RouteConfig<ParamList extends ParamListBase, RouteName extends keyof ParamList, State extends NavigationState, ScreenOptions extends {}, EventMap extends EventMapBase> = {
    /**
     * Route name of this screen.
     */
    name: RouteName;
    /**
     * Navigator options for this screen.
     */
    options?: ScreenOptions | ((props: {
        route: RouteProp<ParamList, RouteName>;
        navigation: any;
    }) => ScreenOptions);
    /**
     * Event listeners for this screen.
     */
    listeners?: ScreenListeners<State, EventMap> | ((props: {
        route: RouteProp<ParamList, RouteName>;
        navigation: any;
    }) => ScreenListeners<State, EventMap>);
    /**
     * Function to return an unique ID for this screen.
     * Receives an object with the route params.
     * For a given screen name, there will always be only one screen corresponding to an ID.
     * If `undefined` is returned, it acts same as no `getId` being specified.
     */
    getId?: ({ params }: {
        params: ParamList[RouteName];
    }) => string | undefined;
    /**
     * Initial params object for the route.
     */
    initialParams?: Partial<ParamList[RouteName]>;
} & RouteConfigComponent<ParamList, RouteName>;
export declare type RouteGroupConfig<ParamList extends ParamListBase, ScreenOptions extends {}> = {
    /**
     * Navigator options for this screen.
     */
    screenOptions?: ScreenOptions | ((props: {
        route: RouteProp<ParamList, keyof ParamList>;
        navigation: any;
    }) => ScreenOptions);
    /**
     * Children React Elements to extract the route configuration from.
     * Only `Screen`, `Group` and `React.Fragment` are supported as children.
     */
    children: React.ReactNode;
};
export declare type NavigationContainerEventMap = {
    /**
     * Event which fires when the navigation state changes.
     */
    state: {
        data: {
            /**
             * The updated state object after the state change.
             */
            state: NavigationState | PartialState<NavigationState> | undefined;
        };
    };
    /**
     * Event which fires when current options changes.
     */
    options: {
        data: {
            options: object;
        };
    };
    /**
     * Event which fires when an action is dispatched.
     * Only intended for debugging purposes, don't use it for app logic.
     * This event will be emitted before state changes have been applied.
     */
    __unsafe_action__: {
        data: {
            /**
             * The action object which was dispatched.
             */
            action: NavigationAction;
            /**
             * Whether the action was a no-op, i.e. resulted any state changes.
             */
            noop: boolean;
            /**
             * Stack trace of the action, this will only be available during development.
             */
            stack: string | undefined;
        };
    };
};
export declare type NavigationContainerRef<ParamList extends {}> = NavigationHelpers<ParamList> & EventConsumer<NavigationContainerEventMap> & {
    /**
     * Reset the navigation state of the root navigator to the provided state.
     *
     * @param state Navigation state object.
     */
    resetRoot(state?: PartialState<NavigationState> | NavigationState): void;
    /**
     * Get the rehydrated navigation state of the navigation tree.
     */
    getRootState(): NavigationState;
    /**
     * Get the currently focused navigation route.
     */
    getCurrentRoute(): Route<string> | undefined;
    /**
     * Get the currently focused route's options.
     */
    getCurrentOptions(): object | undefined;
    /**
     * Whether the navigation container is ready to handle actions.
     */
    isReady(): boolean;
};
export declare type NavigationContainerRefWithCurrent<ParamList extends {}> = NavigationContainerRef<ParamList> & {
    current: NavigationContainerRef<ParamList> | null;
};
export declare type TypedNavigator<ParamList extends ParamListBase, State extends NavigationState, ScreenOptions extends {}, EventMap extends EventMapBase, Navigator extends React.ComponentType<any>> = {
    /**
     * Navigator component which manages the child screens.
     */
    Navigator: React.ComponentType<Omit<React.ComponentProps<Navigator>, keyof DefaultNavigatorOptions<any, any, any, any>> & DefaultNavigatorOptions<ParamList, State, ScreenOptions, EventMap>>;
    /**
     * Component used for grouping multiple route configuration.
     */
    Group: React.ComponentType<RouteGroupConfig<ParamList, ScreenOptions>>;
    /**
     * Component used for specifying route configuration.
     */
    Screen: <RouteName extends keyof ParamList>(_: RouteConfig<ParamList, RouteName, State, ScreenOptions, EventMap>) => null;
};
export declare type NavigatorScreenParams<ParamList, State extends NavigationState = NavigationState> = {
    screen?: never;
    params?: never;
    initial?: never;
    path?: string;
    state: PartialState<State> | State | undefined;
} | {
    [RouteName in keyof ParamList]: undefined extends ParamList[RouteName] ? {
        screen: RouteName;
        params?: ParamList[RouteName];
        initial?: boolean;
        path?: string;
        state?: never;
    } : {
        screen: RouteName;
        params: ParamList[RouteName];
        initial?: boolean;
        path?: string;
        state?: never;
    };
}[keyof ParamList];
export declare type PathConfig<ParamList extends {}> = {
    path?: string;
    exact?: boolean;
    parse?: Record<string, (value: string) => any>;
    stringify?: Record<string, (value: any) => string>;
    screens?: PathConfigMap<ParamList>;
    initialRouteName?: keyof ParamList;
};
export declare type PathConfigMap<ParamList extends {}> = {
    [RouteName in keyof ParamList]?: NonNullable<ParamList[RouteName]> extends NavigatorScreenParams<infer T, any> ? string | PathConfig<T> : string | Omit<PathConfig<{}>, 'screens' | 'initialRouteName'>;
};
export {};