Feature: Implement theme dependent illustrations (useThemeIllustrations hook)

src/App.js

@@ -24,6 +24,7 @@ import OnyxUpdateManager from './libs/actions/OnyxUpdateManager';
 import * as Session from './libs/actions/Session';
 import * as Environment from './libs/Environment/Environment';
 import {ReportAttachmentsProvider} from './pages/home/report/ReportAttachmentsContext';
+import ThemeIllustrationsProvider from './styles/illustrations/ThemeIllustrationsProvider';
 import ThemeProvider from './styles/themes/ThemeProvider';
 import ThemeStylesProvider from './styles/ThemeStylesProvider';
 
@@ -64,6 +65,7 @@ function App() {
                     EnvironmentProvider,
                     ThemeProvider,
                     ThemeStylesProvider,
+                    ThemeIllustrationsProvider,
                 ]}
             >
                 <CustomStatusBar />

src/pages/home/report/AnimatedEmptyStateBackground.js

@@ -1,8 +1,8 @@
 import React from 'react';
 import Animated, {SensorType, useAnimatedSensor, useAnimatedStyle, useSharedValue, withSpring} from 'react-native-reanimated';
-import EmptyStateBackgroundImage from '@assets/images/empty-state_background-fade.png';
 import useWindowDimensions from '@hooks/useWindowDimensions';
 import * as NumberUtils from '@libs/NumberUtils';
+import useThemeIllustrations from '@styles/illustrations/useThemeIllustrations';
 import * as StyleUtils from '@styles/StyleUtils';
 import variables from '@styles/variables';
 import CONST from '@src/CONST';
@@ -11,6 +11,7 @@ const IMAGE_OFFSET_Y = 75;
 
 function AnimatedEmptyStateBackground() {
     const {windowWidth, isSmallScreenWidth} = useWindowDimensions();
+    const illustrations = useThemeIllustrations();
     const IMAGE_OFFSET_X = windowWidth / 2;
 
     // If window width is greater than the max background width, repeat the background image
@@ -41,7 +42,7 @@ function AnimatedEmptyStateBackground() {
 
     return (
         <Animated.Image
-            source={EmptyStateBackgroundImage}
+            source={illustrations.EmptyStateBackgroundImage}
             style={[StyleUtils.getReportWelcomeBackgroundImageStyle(isSmallScreenWidth), animatedStyles]}
             resizeMode={windowWidth > maxBackgroundWidth ? 'repeat' : 'cover'}
         />

src/styles/illustrations/ThemeIllustrationsContext.ts

@@ -0,0 +1,7 @@
+import React from 'react';
+import DarkIllustrations from './dark';
+import {Illustrations} from './types';
+
+const ThemeIllustrationsContext = React.createContext<Illustrations>(DarkIllustrations);
+
+export default ThemeIllustrationsContext;

src/styles/illustrations/ThemeIllustrationsProvider.tsx

@@ -0,0 +1,21 @@
+import React, {useMemo} from 'react';
+import useThemePreference from '@styles/themes/useThemePreference';
+import DarkIllustrations from './dark';
+import LightIllustrations from './light';
+import ThemeIllustrationsContext from './ThemeIllustrationsContext';
+
+type ThemeIllustrationsProviderProps = {
+    children: React.ReactNode;
+};
+
+function ThemeIllustrationsProvider({children}: ThemeIllustrationsProviderProps) {
+    const themePreference = useThemePreference();
+
+    const illustrations = useMemo(() => (themePreference === 'dark' ? DarkIllustrations : LightIllustrations), [themePreference]);
+
+    return <ThemeIllustrationsContext.Provider value={illustrations}>{children}</ThemeIllustrationsContext.Provider>;
+}
+
+ThemeIllustrationsProvider.displayName = 'ThemeIllustrationsProvider';
+
+export default ThemeIllustrationsProvider;

src/styles/illustrations/dark.ts

@@ -0,0 +1,8 @@
+import EmptyStateBackgroundImage from '@assets/images/empty-state_background-fade-dark.png';
+import {Illustrations} from './types';
+
+const illustrations = {
+    EmptyStateBackgroundImage,
+} satisfies Illustrations;
+
+export default illustrations;

src/styles/illustrations/light.ts

@@ -0,0 +1,8 @@
+import EmptyStateBackgroundImage from '@assets/images/empty-state_background-fade-light.png';
+import {Illustrations} from './types';
+
+const illustrations = {
+    EmptyStateBackgroundImage,
+} satisfies Illustrations;
+
+export default illustrations;

src/styles/illustrations/types.ts

@@ -0,0 +1,8 @@
+import {ImageSourcePropType} from 'react-native';
+
+type Illustrations = {
+    EmptyStateBackgroundImage: ImageSourcePropType;
+};
+
+// eslint-disable-next-line import/prefer-default-export
+export {type Illustrations};

src/styles/illustrations/useThemeIllustrations.ts

@@ -0,0 +1,14 @@
+import {useContext} from 'react';
+import ThemeIllustrationsContext from './ThemeIllustrationsContext';
+
+function useThemeIllustrations() {
+    const illustrations = useContext(ThemeIllustrationsContext);
+
+    if (!illustrations) {
+        throw new Error('ThemeIllustrationsContext was null! Are you sure that you wrapped the component under a <ThemeIllustrationsProvider>?');
+    }
+
+    return illustrations;
+}
+
+export default useThemeIllustrations;

src/styles/useThemeStyles.ts

@@ -8,8 +8,6 @@ function useThemeStyles() {
         throw new Error('ThemeStylesContext was null! Are you sure that you wrapped the component under a <ThemeStylesProvider>?');
     }
 
-    // TODO: Remove this "eslint-disable-next" once the theme switching migration is done and styles are fully typed (GH Issue: https://github.com/Expensify/App/issues/27337)
-    // eslint-disable-next-line @typescript-eslint/no-unsafe-return
     return themeStyles;
 }