Type component options

lib/src/interfaces/NavigationComponent.ts

@@ -11,16 +11,22 @@ import {
   ComponentDidDisappearEvent,
 } from './ComponentEvents';
 import { NavigationComponentProps } from './NavigationComponentProps';
+import { Options } from './Options';
 
-export class NavigationComponent<Props = {}, State = {}, Snapshot = any>
-  extends React.Component<Props & NavigationComponentProps, State, Snapshot> {
-    componentDidAppear(_event: ComponentDidAppearEvent) {}
-    componentDidDisappear(_event: ComponentDidDisappearEvent) {}
-    navigationButtonPressed(_event: NavigationButtonPressedEvent) {}
-    modalDismissed(_event: ModalDismissedEvent) {}
-    modalAttemptedToDismiss(_event: ModalAttemptedToDismissEvent) {}
-    searchBarUpdated(_event: SearchBarUpdatedEvent) {}
-    searchBarCancelPressed(_event: SearchBarCancelPressedEvent) {}
-    previewCompleted(_event: PreviewCompletedEvent) {}
-    screenPopped(_event: ScreenPoppedEvent) {}
-  }
+export class NavigationComponent<Props = {}, State = {}, Snapshot = any> extends React.Component<
+  Props & NavigationComponentProps,
+  State,
+  Snapshot
+> {
+  static options?: (() => Options) | Options;
+
+  componentDidAppear(_event: ComponentDidAppearEvent) {}
+  componentDidDisappear(_event: ComponentDidDisappearEvent) {}
+  navigationButtonPressed(_event: NavigationButtonPressedEvent) {}
+  modalDismissed(_event: ModalDismissedEvent) {}
+  modalAttemptedToDismiss(_event: ModalAttemptedToDismissEvent) {}
+  searchBarUpdated(_event: SearchBarUpdatedEvent) {}
+  searchBarCancelPressed(_event: SearchBarCancelPressedEvent) {}
+  previewCompleted(_event: PreviewCompletedEvent) {}
+  screenPopped(_event: ScreenPoppedEvent) {}
+}

lib/src/interfaces/NavigationFunctionComponent.ts

@@ -4,5 +4,5 @@ import { Options } from './Options';
 
 export interface NavigationFunctionComponent<Props = {}>
   extends React.FunctionComponent<Props & NavigationComponentProps> {
-    options?: ((props: Props) => Options) | Options;
+  options?: ((props: Props) => Options) | Options;
 }

lib/src/interfaces/Options.ts

@@ -456,11 +456,11 @@ export interface OptionsTopBar {
   /**
    * List of buttons to the left
    */
-  leftButtons?: OptionsTopBarButton[];
+  leftButtons?: OptionsTopBarButton | OptionsTopBarButton[];
   /**
    * List of buttons to the right
    */
-  rightButtons?: OptionsTopBarButton[];
+  rightButtons?: OptionsTopBarButton | OptionsTopBarButton[];
   /**
    * Background configuration
    */

playground/src/commons/Layouts.ts

@@ -10,14 +10,14 @@ const stack = (rawChildren: CompIdOrLayout | CompIdOrLayout[], id?: string): Lay
   return { stack: { children, id } };
 };
 
-const component = (
+const component = <P = {}>(
   compIdOrLayout: CompIdOrLayout,
   options?: Options,
-  passProps?: object
-): Layout => {
+  passProps?: P
+): Layout<P> => {
   return isString(compIdOrLayout)
     ? { component: { name: compIdOrLayout, options, passProps } }
-    : compIdOrLayout;
+    : (compIdOrLayout as Layout<P>);
 };
 
 export { stack, component };

playground/src/screens/FullScreenModalScreen.tsx

@@ -1,7 +1,7 @@
 import concat from 'lodash/concat';
 import last from 'lodash/last';
 import React from 'react';
-import { NavigationComponentProps } from 'react-native-navigation';
+import { NavigationComponent } from 'react-native-navigation';
 import Root from '../components/Root';
 import Button from '../components/Button';
 import Navigation from './../services/Navigation';
@@ -10,12 +10,12 @@ import testIDs from '../testIDs';
 
 const { PUSH_BTN, MODAL_SCREEN_HEADER, MODAL_BTN, DISMISS_MODAL_BTN } = testIDs;
 
-interface Props extends NavigationComponentProps {
+interface Props {
   previousModalIds?: string[];
   modalPosition?: number;
 }
 
-export default class FullScreenModalScreen extends React.Component<Props> {
+export default class FullScreenModalScreen extends NavigationComponent<Props> {
   static options() {
     return {
       statusBar: {

playground/src/screens/LayoutsScreen.tsx

@@ -1,5 +1,5 @@
 import React from 'react';
-import { Options, NavigationComponentProps } from 'react-native-navigation';
+import { Options, NavigationComponent } from 'react-native-navigation';
 
 import Root from '../components/Root';
 import Button from '../components/Button';
@@ -17,9 +17,7 @@ const {
   SPLIT_VIEW_BUTTON,
 } = testIDs;
 
-interface LayoutsScreenProps extends NavigationComponentProps {}
-
-export default class LayoutsScreen extends React.Component<LayoutsScreenProps> {
+export default class LayoutsScreen extends NavigationComponent {
   static options(): Options {
     return {
       topBar: {

playground/src/screens/ModalScreen.tsx

@@ -1,5 +1,5 @@
 import React from 'react';
-import { NavigationComponentProps } from 'react-native-navigation';
+import { NavigationComponent } from 'react-native-navigation';
 import last from 'lodash/last';
 import concat from 'lodash/concat';
 import forEach from 'lodash/forEach';
@@ -25,12 +25,12 @@ const {
   SET_ROOT,
 } = testIDs;
 
-interface Props extends NavigationComponentProps {
+interface Props {
   previousModalIds?: string[];
   modalPosition?: number;
 }
 
-export default class ModalScreen extends React.Component<Props> {
+export default class ModalScreen extends NavigationComponent<Props> {
   static options() {
     return {
       topBar: {

playground/src/screens/PushedScreen.tsx

@@ -1,6 +1,10 @@
 import React from 'react';
 import { BackHandler } from 'react-native';
-import { NavigationComponentProps, NavigationButtonPressedEvent } from 'react-native-navigation';
+import {
+  NavigationComponent,
+  NavigationComponentProps,
+  NavigationButtonPressedEvent,
+} from 'react-native-navigation';
 import concat from 'lodash/concat';
 import Navigation from '../services/Navigation';
 import Root from '../components/Root';
@@ -29,7 +33,7 @@ interface Props extends NavigationComponentProps {
   stackPosition: number;
 }
 
-export default class PushedScreen extends React.Component<Props> {
+export default class PushedScreen extends NavigationComponent<Props> {
   static options() {
     return {
       topBar: {
@@ -99,7 +103,7 @@ export default class PushedScreen extends React.Component<Props> {
   }
 
   push = () =>
-    Navigation.push(this, {
+    Navigation.push<Props>(this, {
       component: {
         name: Screens.Pushed,
         passProps: this.createPassProps(),
@@ -216,7 +220,7 @@ export default class PushedScreen extends React.Component<Props> {
     return {
       stackPosition: this.getStackPosition() + 1,
       previousScreenIds: concat([], this.props.previousScreenIds || [], this.props.componentId),
-    };
+    } as Props;
   };
   getStackPosition = () => this.props.stackPosition || 1;
 }

playground/src/screens/SideMenuCenterScreen.tsx

@@ -1,13 +1,17 @@
 import React from 'react';
-import { NavigationComponentProps, NavigationButtonPressedEvent } from 'react-native-navigation';
+import {
+  NavigationComponent,
+  NavigationButtonPressedEvent,
+  NavigationComponentProps,
+} from 'react-native-navigation';
 import Root from '../components/Root';
 import Button from '../components/Button';
 import Navigation from '../services/Navigation';
 import testIDs from '../testIDs';
 
 const { OPEN_LEFT_SIDE_MENU_BTN, OPEN_RIGHT_SIDE_MENU_BTN, CENTER_SCREEN_HEADER } = testIDs;
 
-export default class SideMenuCenterScreen extends React.Component<NavigationComponentProps> {
+export default class SideMenuCenterScreen extends NavigationComponent {
   static options() {
     return {
       topBar: {

playground/src/screens/SideMenuLeftScreen.tsx

@@ -1,6 +1,6 @@
 import React, { useEffect, useState } from 'react';
 import { Text } from 'react-native';
-import { NavigationComponentProps } from 'react-native-navigation';
+import { NavigationFunctionComponent } from 'react-native-navigation';
 import Root from '../components/Root';
 import Button from '../components/Button';
 import Navigation from '../services/Navigation';
@@ -14,11 +14,11 @@ const {
   SIDE_MENU_LEFT_DRAWER_HEIGHT_TEXT,
 } = testIDs;
 
-interface Props extends NavigationComponentProps {
+interface Props {
   marginTop?: number;
 }
 
-export default function SideMenuLeftScreen({ componentId, marginTop }: Props) {
+const SideMenuLeftScreen: NavigationFunctionComponent<Props> = ({ componentId, marginTop }) => {
   useEffect(() => {
     const unsubscribe = Navigation.events().registerComponentListener(
       {
@@ -79,4 +79,5 @@ export default function SideMenuLeftScreen({ componentId, marginTop }: Props) {
       <Text testID={SIDE_MENU_LEFT_DRAWER_HEIGHT_TEXT}>{`left drawer height: ${height}`}</Text>
     </Root>
   );
-}
+};
+export default SideMenuLeftScreen;

playground/src/screens/sharedElementTransition/CocktailsListScreen.tsx

@@ -16,7 +16,7 @@ export default class CocktailsListScreen extends NavigationComponent {
       ...Platform.select({
         android: {
           statusBar: {
-            style: 'dark',
+            style: 'dark' as const,
             backgroundColor: 'white',
           },
         },

playground/src/screens/splitView/CocktailsListMasterScreen.tsx

@@ -16,7 +16,7 @@ export default class CocktailsListMasterScreen extends CocktailsListScreen {
       ...Platform.select({
         android: {
           statusBar: {
-            style: 'dark',
+            style: 'dark' as const,
             backgroundColor: 'white',
           },
         },

playground/src/services/Navigation.ts

@@ -5,10 +5,13 @@ import { stack, component } from '../commons/Layouts';
 
 type ComponentIdProp = { props: { componentId: string } };
 type SelfOrCompId = string | ComponentIdProp;
-type CompIdOrLayout = string | Layout;
+type CompIdOrLayout<P = {}> = string | Layout<P>;
 
-const push = (selfOrCompId: SelfOrCompId, screen: CompIdOrLayout, options?: Options) =>
-  Navigation.push(compId(selfOrCompId), isString(screen) ? component(screen, options) : screen);
+const push = <P>(selfOrCompId: SelfOrCompId, screen: CompIdOrLayout<P>, options?: Options) =>
+  Navigation.push<P>(
+    compId(selfOrCompId),
+    isString(screen) ? component<P>(screen, options) : (screen as Layout<P>)
+  );
 
 const pushExternalComponent = (
   self: { props: { componentId: string } },

website/docs/third-party-typescript.mdx

@@ -0,0 +1,109 @@
+---
+id: third-party-typescript
+title: TypeScript
+sidebar_label: TypeScript
+---
+
+import Tabs from '@theme/Tabs';
+import TabItem from '@theme/TabItem';
+
+## Strongly typed components
+
+Both functional and class components can be typed to get the benefits of strongly typed options and props.
+
+<Tabs
+  defaultValue="clazz"
+  values={[
+    { label: 'Class Component', value: 'clazz' },
+    { label: 'Functional Component', value: 'functional' },
+  ]}
+>
+
+<TabItem value="clazz">
+
+```tsx
+import { NavigationComponent } from 'react-native-navigation';
+
+interface Props extends NavigationComponentProps {
+  age: number
+}
+
+export default class MyComponent extends NavigationComponent<Props> {
+  // Options are strongly typed
+  static options() {
+    return {
+      statusBar: {
+        // Some options are of union type. We're using `as const` to let the-
+        // TS compiler know this value is not a regular string
+        style: 'dark' as const,
+      },
+      topBar: {
+        title: {
+          text: 'My Screen',
+        }
+      };
+    }
+  }
+
+  constructor(props: Props) {
+    super(props);
+  }
+}
+```
+
+</TabItem>
+
+<TabItem value="functional">
+
+```tsx
+import { NavigationFunctionComponent } from 'react-native-navigation';
+
+interface Props {
+  name: string;
+}
+
+const MyFunctionalComponent: NavigationFunctionComponent<Props> = ({ componentId, name }) => {
+  return <View />;
+};
+
+// Static options are also supported!
+MyFunctionalComponent.options = {
+  topBar: {
+    title: {
+      text: 'Hello functional component',
+    },
+  },
+};
+export default MyFunctionalComponent;
+```
+
+</TabItem>
+
+</Tabs>
+
+## Typed props in commands
+
+Arguments are passed to components view the `passProp`. This is a common source for errors as these props tend to change overtime. Luckily we can type the passProps property to avoid these regressions. The example below shows how to declare types for passProps when pushing a screen.
+
+```tsx
+class Props: {
+  name: string
+}
+
+Navigation.push<Props>(componentId, {
+  component: {
+    name: 'MyComponent',
+    passProps: {
+      name: 'Bob',
+      color: 'red', // Compilation error! color isn't declared in Props
+    }
+  }
+});
+```
+
+The following commands accept typed passProps:
+
+- push
+- setStackRoot
+- showModal
+- showOverlay