fix(tfl): handle near-1km boundary in formatDistance

Values like 0.9999km rounded to 1000m and displayed as
'1000m away'. Now converts to meters first and switches
to km format when rounded meters >= 1000.

Co-authored-by: Ona <no-reply@ona.com>

.github/workflows/test.yml

@@ -21,4 +21,4 @@ jobs:
         run: bun install --frozen-lockfile
 
       - name: Run tests
-        run: bun test
+        run: bun run test

apps/aelis-backend/src/engine/http.test.ts

@@ -1,5 +1,6 @@
 import type { ActionDefinition, ContextEntry, FeedItem, FeedSource } from "@aelis/core"
 
+import { contextKey } from "@aelis/core"
 import { describe, expect, test } from "bun:test"
 import { Hono } from "hono"
 
@@ -18,7 +19,11 @@ interface FeedResponse {
 	errors: Array<{ sourceId: string; error: string }>
 }
 
-function createStubSource(id: string, items: FeedItem[] = []): FeedSource {
+function createStubSource(
+	id: string,
+	items: FeedItem[] = [],
+	contextEntries: readonly ContextEntry[] | null = null,
+): FeedSource {
 	return {
 		id,
 		async listActions(): Promise<Record<string, ActionDefinition>> {
@@ -28,7 +33,7 @@ function createStubSource(id: string, items: FeedItem[] = []): FeedSource {
 			return undefined
 		},
 		async fetchContext(): Promise<readonly ContextEntry[] | null> {
-			return null
+			return contextEntries
 		},
 		async fetchItems() {
 			return items
@@ -142,3 +147,167 @@ describe("GET /api/feed", () => {
 		expect(body.errors[0]!.error).toBe("connection timeout")
 	})
 })
+
+describe("GET /api/context", () => {
+	const weatherKey = contextKey("aelis.weather", "weather")
+	const weatherData = { temperature: 20, condition: "Clear" }
+	const contextEntries: readonly ContextEntry[] = [[weatherKey, weatherData]]
+
+	// The mock auth middleware always injects this hardcoded user ID
+	const mockUserId = "k7Gx2mPqRvNwYs9TdLfA4bHcJeUo1iZn"
+
+	function buildContextApp(userId?: string) {
+		const manager = new UserSessionManager({
+			providers: [() => createStubSource("weather", [], contextEntries)],
+		})
+		const app = buildTestApp(manager, userId)
+		const session = manager.getOrCreate(mockUserId)
+		return { app, session }
+	}
+
+	test("returns 401 without auth", async () => {
+		const manager = new UserSessionManager({ providers: [] })
+		const app = buildTestApp(manager)
+
+		const res = await app.request('/api/context?key=["aelis.weather","weather"]')
+
+		expect(res.status).toBe(401)
+	})
+
+	test("returns 400 when key param is missing", async () => {
+		const { app } = buildContextApp("user-1")
+
+		const res = await app.request("/api/context")
+
+		expect(res.status).toBe(400)
+		const body = (await res.json()) as { error: string }
+		expect(body.error).toContain("key")
+	})
+
+	test("returns 400 when key is invalid JSON", async () => {
+		const { app } = buildContextApp("user-1")
+
+		const res = await app.request("/api/context?key=notjson")
+
+		expect(res.status).toBe(400)
+		const body = (await res.json()) as { error: string }
+		expect(body.error).toContain("key")
+	})
+
+	test("returns 400 when key is not an array", async () => {
+		const { app } = buildContextApp("user-1")
+
+		const res = await app.request('/api/context?key="string"')
+
+		expect(res.status).toBe(400)
+		const body = (await res.json()) as { error: string }
+		expect(body.error).toContain("key")
+	})
+
+	test("returns 400 when key contains invalid element types", async () => {
+		const { app } = buildContextApp("user-1")
+
+		const res = await app.request("/api/context?key=[true,null,[1,2]]")
+
+		expect(res.status).toBe(400)
+		const body = (await res.json()) as { error: string }
+		expect(body.error).toContain("key")
+	})
+
+	test("returns 400 when key is an empty array", async () => {
+		const { app } = buildContextApp("user-1")
+
+		const res = await app.request("/api/context?key=[]")
+
+		expect(res.status).toBe(400)
+		const body = (await res.json()) as { error: string }
+		expect(body.error).toContain("key")
+	})
+
+	test("returns 400 when match param is invalid", async () => {
+		const { app } = buildContextApp("user-1")
+
+		const res = await app.request('/api/context?key=["aelis.weather"]&match=invalid')
+
+		expect(res.status).toBe(400)
+		const body = (await res.json()) as { error: string }
+		expect(body.error).toContain("match")
+	})
+
+	test("returns exact match with match=exact", async () => {
+		const { app, session } = buildContextApp("user-1")
+		await session.engine.refresh()
+
+		const res = await app.request('/api/context?key=["aelis.weather","weather"]&match=exact')
+
+		expect(res.status).toBe(200)
+		const body = (await res.json()) as { match: string; value: unknown }
+		expect(body.match).toBe("exact")
+		expect(body.value).toEqual(weatherData)
+	})
+
+	test("returns 404 with match=exact when only prefix would match", async () => {
+		const { app, session } = buildContextApp("user-1")
+		await session.engine.refresh()
+
+		const res = await app.request('/api/context?key=["aelis.weather"]&match=exact')
+
+		expect(res.status).toBe(404)
+	})
+
+	test("returns prefix match with match=prefix", async () => {
+		const { app, session } = buildContextApp("user-1")
+		await session.engine.refresh()
+
+		const res = await app.request('/api/context?key=["aelis.weather"]&match=prefix')
+
+		expect(res.status).toBe(200)
+		const body = (await res.json()) as {
+			match: string
+			entries: Array<{ key: unknown[]; value: unknown }>
+		}
+		expect(body.match).toBe("prefix")
+		expect(body.entries).toHaveLength(1)
+		expect(body.entries[0]!.key).toEqual(["aelis.weather", "weather"])
+		expect(body.entries[0]!.value).toEqual(weatherData)
+	})
+
+	test("default mode returns exact match when available", async () => {
+		const { app, session } = buildContextApp("user-1")
+		await session.engine.refresh()
+
+		const res = await app.request('/api/context?key=["aelis.weather","weather"]')
+
+		expect(res.status).toBe(200)
+		const body = (await res.json()) as { match: string; value: unknown }
+		expect(body.match).toBe("exact")
+		expect(body.value).toEqual(weatherData)
+	})
+
+	test("default mode falls back to prefix when no exact match", async () => {
+		const { app, session } = buildContextApp("user-1")
+		await session.engine.refresh()
+
+		const res = await app.request('/api/context?key=["aelis.weather"]')
+
+		expect(res.status).toBe(200)
+		const body = (await res.json()) as {
+			match: string
+			entries: Array<{ key: unknown[]; value: unknown }>
+		}
+		expect(body.match).toBe("prefix")
+		expect(body.entries).toHaveLength(1)
+		expect(body.entries[0]!.value).toEqual(weatherData)
+	})
+
+	test("returns 404 when neither exact nor prefix matches", async () => {
+		const { app, session } = buildContextApp("user-1")
+		await session.engine.refresh()
+
+		const res = await app.request('/api/context?key=["nonexistent"]')
+
+		expect(res.status).toBe(404)
+		const body = (await res.json()) as { error: string }
+		expect(body.error).toBe("Context key not found")
+	})
+})

apps/aelis-backend/src/engine/http.ts

@@ -1,5 +1,6 @@
 import type { Context, Hono } from "hono"
 
+import { contextKey } from "@aelis/core"
 import { createMiddleware } from "hono/factory"
 
 import type { AuthSessionMiddleware } from "../auth/session-middleware.ts"
@@ -26,6 +27,7 @@ export function registerFeedHttpHandlers(
 	})
 
 	app.get("/api/feed", inject, authSessionMiddleware, handleGetFeed)
+	app.get("/api/context", inject, authSessionMiddleware, handleGetContext)
 }
 
 async function handleGetFeed(c: Context<Env>) {
@@ -43,3 +45,74 @@ async function handleGetFeed(c: Context<Env>) {
 		})),
 	})
 }
+
+function handleGetContext(c: Context<Env>) {
+	const keyParam = c.req.query("key")
+	if (!keyParam) {
+		return c.json({ error: 'Invalid or missing "key" parameter: must be a JSON array' }, 400)
+	}
+
+	let parsed: unknown
+	try {
+		parsed = JSON.parse(keyParam)
+	} catch {
+		return c.json({ error: 'Invalid or missing "key" parameter: must be a JSON array' }, 400)
+	}
+
+	if (!Array.isArray(parsed) || parsed.length === 0 || !parsed.every(isContextKeyPart)) {
+		return c.json({ error: 'Invalid or missing "key" parameter: must be a JSON array' }, 400)
+	}
+
+	const matchParam = c.req.query("match")
+	if (matchParam !== undefined && matchParam !== "exact" && matchParam !== "prefix") {
+		return c.json({ error: 'Invalid "match" parameter: must be "exact" or "prefix"' }, 400)
+	}
+
+	const user = c.get("user")!
+	const sessionManager = c.get("sessionManager")
+	const session = sessionManager.getOrCreate(user.id)
+	const context = session.engine.currentContext()
+	const key = contextKey(...parsed)
+
+	if (matchParam === "exact") {
+		const value = context.get(key)
+		if (value === undefined) {
+			return c.json({ error: "Context key not found" }, 404)
+		}
+		return c.json({ match: "exact", value })
+	}
+
+	if (matchParam === "prefix") {
+		const entries = context.find(key)
+		if (entries.length === 0) {
+			return c.json({ error: "Context key not found" }, 404)
+		}
+		return c.json({ match: "prefix", entries })
+	}
+
+	// Default: single find() covers both exact and prefix matches
+	const entries = context.find(key)
+	if (entries.length === 0) {
+		return c.json({ error: "Context key not found" }, 404)
+	}
+
+	// If exactly one result with the same key length, treat as exact match
+	if (entries.length === 1 && entries[0]!.key.length === parsed.length) {
+		return c.json({ match: "exact", value: entries[0]!.value })
+	}
+
+	return c.json({ match: "prefix", entries })
+}
+
+/** Validates that a value is a valid ContextKeyPart (string, number, or plain object of primitives). */
+function isContextKeyPart(value: unknown): boolean {
+	if (typeof value === "string" || typeof value === "number") {
+		return true
+	}
+	if (typeof value === "object" && value !== null && !Array.isArray(value)) {
+		return Object.values(value).every(
+			(v) => typeof v === "string" || typeof v === "number" || typeof v === "boolean",
+		)
+	}
+	return false
+}

apps/aelis-client/package.json

@@ -18,6 +18,7 @@
 		"@expo-google-fonts/inter": "^0.4.2",
 		"@expo-google-fonts/source-serif-4": "^0.4.1",
 		"@expo/vector-icons": "^15.0.3",
+		"@json-render/react-native": "^0.13.0",
 		"@react-navigation/bottom-tabs": "^7.4.0",
 		"@react-navigation/elements": "^2.6.3",
 		"@react-navigation/native": "^7.1.8",
@@ -45,7 +46,8 @@
 		"react-native-svg": "15.12.1",
 		"react-native-web": "~0.21.0",
 		"react-native-worklets": "0.5.1",
-		"twrnc": "^4.16.0"
+		"twrnc": "^4.16.0",
+		"zod": "^4.3.6"
 	},
 	"devDependencies": {
 		"@types/react": "~19.1.0",

apps/aelis-client/src/app/(tabs)/_layout.tsx

@@ -1,36 +0,0 @@
-import { Tabs } from "expo-router"
-import React from "react"
-
-import { HapticTab } from "@/components/haptic-tab"
-import { IconSymbol } from "@/components/ui/icon-symbol"
-import { Colors } from "@/constants/theme"
-import { useColorScheme } from "@/hooks/use-color-scheme"
-
-export default function TabLayout() {
-	const colorScheme = useColorScheme()
-
-	return (
-		<Tabs
-			screenOptions={{
-				tabBarActiveTintColor: Colors[colorScheme ?? "light"].tint,
-				headerShown: false,
-				tabBarButton: HapticTab,
-			}}
-		>
-			<Tabs.Screen
-				name="index"
-				options={{
-					title: "Home",
-					tabBarIcon: ({ color }) => <IconSymbol size={28} name="house.fill" color={color} />,
-				}}
-			/>
-			<Tabs.Screen
-				name="explore"
-				options={{
-					title: "Explore",
-					tabBarIcon: ({ color }) => <IconSymbol size={28} name="paperplane.fill" color={color} />,
-				}}
-			/>
-		</Tabs>
-	)
-}

apps/aelis-client/src/app/(tabs)/explore.tsx

@@ -1,114 +0,0 @@
-import { Image } from "expo-image"
-import { Platform, StyleSheet } from "react-native"
-
-import { ExternalLink } from "@/components/external-link"
-import ParallaxScrollView from "@/components/parallax-scroll-view"
-import { ThemedText } from "@/components/themed-text"
-import { ThemedView } from "@/components/themed-view"
-import { Collapsible } from "@/components/ui/collapsible"
-import { IconSymbol } from "@/components/ui/icon-symbol"
-import { Fonts } from "@/constants/theme"
-
-export default function TabTwoScreen() {
-	return (
-		<ParallaxScrollView
-			headerBackgroundColor={{ light: "#D0D0D0", dark: "#353636" }}
-			headerImage={
-				<IconSymbol
-					size={310}
-					color="#808080"
-					name="chevron.left.forwardslash.chevron.right"
-					style={styles.headerImage}
-				/>
-			}
-		>
-			<ThemedView style={styles.titleContainer}>
-				<ThemedText
-					type="title"
-					style={{
-						fontFamily: Fonts.rounded,
-					}}
-				>
-					Explore
-				</ThemedText>
-			</ThemedView>
-			<ThemedText>This app includes example code to help you get started.</ThemedText>
-			<Collapsible title="File-based routing">
-				<ThemedText>
-					This app has two screens:{" "}
-					<ThemedText type="defaultSemiBold">app/(tabs)/index.tsx</ThemedText> and{" "}
-					<ThemedText type="defaultSemiBold">app/(tabs)/explore.tsx</ThemedText>
-				</ThemedText>
-				<ThemedText>
-					The layout file in <ThemedText type="defaultSemiBold">app/(tabs)/_layout.tsx</ThemedText>{" "}
-					sets up the tab navigator.
-				</ThemedText>
-				<ExternalLink href="https://docs.expo.dev/router/introduction">
-					<ThemedText type="link">Learn more</ThemedText>
-				</ExternalLink>
-			</Collapsible>
-			<Collapsible title="Android, iOS, and web support">
-				<ThemedText>
-					You can open this project on Android, iOS, and the web. To open the web version, press{" "}
-					<ThemedText type="defaultSemiBold">w</ThemedText> in the terminal running this project.
-				</ThemedText>
-			</Collapsible>
-			<Collapsible title="Images">
-				<ThemedText>
-					For static images, you can use the <ThemedText type="defaultSemiBold">@2x</ThemedText> and{" "}
-					<ThemedText type="defaultSemiBold">@3x</ThemedText> suffixes to provide files for
-					different screen densities
-				</ThemedText>
-				<Image
-					source={require("@assets/images/react-logo.png")}
-					style={{ width: 100, height: 100, alignSelf: "center" }}
-				/>
-				<ExternalLink href="https://reactnative.dev/docs/images">
-					<ThemedText type="link">Learn more</ThemedText>
-				</ExternalLink>
-			</Collapsible>
-			<Collapsible title="Light and dark mode components">
-				<ThemedText>
-					This template has light and dark mode support. The{" "}
-					<ThemedText type="defaultSemiBold">useColorScheme()</ThemedText> hook lets you inspect
-					what the user&apos;s current color scheme is, and so you can adjust UI colors accordingly.
-				</ThemedText>
-				<ExternalLink href="https://docs.expo.dev/develop/user-interface/color-themes/">
-					<ThemedText type="link">Learn more</ThemedText>
-				</ExternalLink>
-			</Collapsible>
-			<Collapsible title="Animations">
-				<ThemedText>
-					This template includes an example of an animated component. The{" "}
-					<ThemedText type="defaultSemiBold">components/HelloWave.tsx</ThemedText> component uses
-					the powerful{" "}
-					<ThemedText type="defaultSemiBold" style={{ fontFamily: Fonts.mono }}>
-						react-native-reanimated
-					</ThemedText>{" "}
-					library to create a waving hand animation.
-				</ThemedText>
-				{Platform.select({
-					ios: (
-						<ThemedText>
-							The <ThemedText type="defaultSemiBold">components/ParallaxScrollView.tsx</ThemedText>{" "}
-							component provides a parallax effect for the header image.
-						</ThemedText>
-					),
-				})}
-			</Collapsible>
-		</ParallaxScrollView>
-	)
-}
-
-const styles = StyleSheet.create({
-	headerImage: {
-		color: "#808080",
-		bottom: -90,
-		left: -35,
-		position: "absolute",
-	},
-	titleContainer: {
-		flexDirection: "row",
-		gap: 8,
-	},
-})

apps/aelis-client/src/app/(tabs)/index.tsx

@@ -1,96 +0,0 @@
-import { Image } from "expo-image"
-import { Link } from "expo-router"
-import { Platform, StyleSheet } from "react-native"
-
-import { HelloWave } from "@/components/hello-wave"
-import ParallaxScrollView from "@/components/parallax-scroll-view"
-import { ThemedText } from "@/components/themed-text"
-import { ThemedView } from "@/components/themed-view"
-
-export default function HomeScreen() {
-	return (
-		<ParallaxScrollView
-			headerBackgroundColor={{ light: "#A1CEDC", dark: "#1D3D47" }}
-			headerImage={
-				<Image source={require("@assets/images/partial-react-logo.png")} style={styles.reactLogo} />
-			}
-		>
-			<ThemedView style={styles.titleContainer}>
-				<ThemedText type="title">Welcome!</ThemedText>
-				<HelloWave />
-			</ThemedView>
-			<ThemedView style={styles.stepContainer}>
-				<ThemedText type="subtitle">Step 1: Try it</ThemedText>
-				<ThemedText>
-					Edit <ThemedText type="defaultSemiBold">app/(tabs)/index.tsx</ThemedText> to see changes.
-					Press{" "}
-					<ThemedText type="defaultSemiBold">
-						{Platform.select({
-							ios: "cmd + d",
-							android: "cmd + m",
-							web: "F12",
-						})}
-					</ThemedText>{" "}
-					to open developer tools.
-				</ThemedText>
-			</ThemedView>
-			<ThemedView style={styles.stepContainer}>
-				<Link href="/modal">
-					<Link.Trigger>
-						<ThemedText type="subtitle">Step 2: Explore</ThemedText>
-					</Link.Trigger>
-					<Link.Preview />
-					<Link.Menu>
-						<Link.MenuAction title="Action" icon="cube" onPress={() => alert("Action pressed")} />
-						<Link.MenuAction
-							title="Share"
-							icon="square.and.arrow.up"
-							onPress={() => alert("Share pressed")}
-						/>
-						<Link.Menu title="More" icon="ellipsis">
-							<Link.MenuAction
-								title="Delete"
-								icon="trash"
-								destructive
-								onPress={() => alert("Delete pressed")}
-							/>
-						</Link.Menu>
-					</Link.Menu>
-				</Link>
-
-				<ThemedText>
-					{`Tap the Explore tab to learn more about what's included in this starter app.`}
-				</ThemedText>
-			</ThemedView>
-			<ThemedView style={styles.stepContainer}>
-				<ThemedText type="subtitle">Step 3: Get a fresh start</ThemedText>
-				<ThemedText>
-					{`When you're ready, run `}
-					<ThemedText type="defaultSemiBold">npm run reset-project</ThemedText> to get a fresh{" "}
-					<ThemedText type="defaultSemiBold">app</ThemedText> directory. This will move the current{" "}
-					<ThemedText type="defaultSemiBold">app</ThemedText> to{" "}
-					<ThemedText type="defaultSemiBold">app-example</ThemedText>.
-				</ThemedText>
-			</ThemedView>
-		</ParallaxScrollView>
-	)
-}
-
-const styles = StyleSheet.create({
-	titleContainer: {
-		flexDirection: "row",
-		alignItems: "center",
-		gap: 8,
-	},
-	stepContainer: {
-		gap: 8,
-		marginBottom: 8,
-	},
-	reactLogo: {
-		height: 178,
-		width: 290,
-		bottom: 0,
-		left: 0,
-		position: "absolute",
-	},
-})

apps/aelis-client/src/app/_layout.tsx

@@ -1,23 +1,45 @@
-import { DarkTheme, DefaultTheme, ThemeProvider } from "@react-navigation/native"
+import "react-native-reanimated"
 import { Stack } from "expo-router"
 import { StatusBar } from "expo-status-bar"
-import "react-native-reanimated"
+import { useColorScheme } from "react-native"
-import { useColorScheme } from "@/hooks/use-color-scheme"
+import tw, { useDeviceContext } from "twrnc"
-
-export const unstable_settings = {
-	anchor: "(tabs)",
-}
 
 export default function RootLayout() {
+	useDeviceContext(tw)
 	const colorScheme = useColorScheme()
+	const headerBg = colorScheme === "dark" ? "#1c1917" : "#f5f5f4"
+	const headerTint = colorScheme === "dark" ? "#e7e5e4" : "#1c1917"
 
 	return (
-		<ThemeProvider value={colorScheme === "dark" ? DarkTheme : DefaultTheme}>
+		<>
-			<Stack>
+			<Stack
-				<Stack.Screen name="(tabs)" options={{ headerShown: false }} />
+				screenOptions={{
-				<Stack.Screen name="modal" options={{ presentation: "modal", title: "Modal" }} />
+					headerShown: false,
+					contentStyle: { backgroundColor: headerBg },
+				}}
+			>
+				<Stack.Screen
+					name="components/index"
+					options={{
+						headerShown: true,
+						title: "Components",
+						headerStyle: { backgroundColor: headerBg },
+						headerTintColor: headerTint,
+						headerShadowVisible: false,
+					}}
+				/>
+				<Stack.Screen
+					name="components/[name]"
+					options={{
+						headerShown: true,
+						title: "",
+						headerStyle: { backgroundColor: headerBg },
+						headerTintColor: headerTint,
+						headerShadowVisible: false,
+					}}
+				/>
 			</Stack>
 			<StatusBar style="auto" />
-		</ThemeProvider>
+		</>
 	)
 }

apps/aelis-client/src/app/components/[name].tsx

@@ -0,0 +1,48 @@
+import { useLocalSearchParams, useNavigation } from "expo-router"
+import { useEffect } from "react"
+import { ScrollView, View } from "react-native"
+import tw from "twrnc"
+
+import { buttonShowcase } from "@/components/ui/button.showcase"
+import { feedCardShowcase } from "@/components/ui/feed-card.showcase"
+import { monospaceTextShowcase } from "@/components/ui/monospace-text.showcase"
+import { sansSerifTextShowcase } from "@/components/ui/sans-serif-text.showcase"
+import { serifTextShowcase } from "@/components/ui/serif-text.showcase"
+import { type Showcase } from "@/components/showcase"
+import { SansSerifText } from "@/components/ui/sans-serif-text"
+
+const showcases: Record<string, Showcase> = {
+	button: buttonShowcase,
+	"feed-card": feedCardShowcase,
+	"serif-text": serifTextShowcase,
+	"sans-serif-text": sansSerifTextShowcase,
+	"monospace-text": monospaceTextShowcase,
+}
+
+export default function ComponentDetailScreen() {
+	const { name } = useLocalSearchParams<{ name: string }>()
+	const navigation = useNavigation()
+	const showcase = showcases[name]
+
+	useEffect(() => {
+		if (showcase) {
+			navigation.setOptions({ title: showcase.title })
+		}
+	}, [navigation, showcase])
+
+	if (!showcase) {
+		return (
+			<View style={tw`bg-stone-100 dark:bg-stone-900 flex-1 items-center justify-center`}>
+				<SansSerifText>Component not found</SansSerifText>
+			</View>
+		)
+	}
+
+	const ShowcaseComponent = showcase.component
+
+	return (
+		<ScrollView style={tw`bg-stone-100 dark:bg-stone-900 flex-1`} contentContainerStyle={tw`px-5 pb-10 pt-4 gap-6`}>
+			<ShowcaseComponent />
+		</ScrollView>
+	)
+}

apps/aelis-client/src/app/components/index.tsx

@@ -0,0 +1,37 @@
+import { Link } from "expo-router"
+import { FlatList, Pressable, View } from "react-native"
+import tw from "twrnc"
+
+import { SansSerifText } from "@/components/ui/sans-serif-text"
+
+const components = [
+	{ name: "button", label: "Button" },
+	{ name: "feed-card", label: "FeedCard" },
+	{ name: "serif-text", label: "SerifText" },
+	{ name: "sans-serif-text", label: "SansSerifText" },
+	{ name: "monospace-text", label: "MonospaceText" },
+] as const
+
+export default function ComponentsScreen() {
+	return (
+		<View style={tw`flex-1`}>
+			<View style={tw`mx-4 mt-4 rounded-xl border border-stone-200 dark:border-stone-800 overflow-hidden`}>
+				<FlatList
+					data={components}
+					keyExtractor={(item) => item.name}
+					scrollEnabled={false}
+					ItemSeparatorComponent={() => (
+						<View style={tw`border-b border-stone-200 dark:border-stone-800`} />
+					)}
+					renderItem={({ item }) => (
+						<Link href={`/components/${item.name}`} asChild>
+							<Pressable style={tw`px-4 py-3`}>
+								<SansSerifText style={tw`text-base`}>{item.label}</SansSerifText>
+							</Pressable>
+						</Link>
+					)}
+				/>
+			</View>
+		</View>
+	)
+}

apps/aelis-client/src/app/index.tsx

@@ -0,0 +1,28 @@
+import { Link } from "expo-router"
+import { Pressable } from "react-native"
+import { SafeAreaView } from "react-native-safe-area-context"
+import tw from "twrnc"
+
+import { Button } from "@/components/ui/button"
+import { FeedCard } from "@/components/ui/feed-card"
+import { MonospaceText } from "@/components/ui/monospace-text"
+import { SansSerifText } from "@/components/ui/sans-serif-text"
+import { SerifText } from "@/components/ui/serif-text"
+
+export default function HomeScreen() {
+	return (
+		<SafeAreaView style={tw`bg-stone-100 dark:bg-stone-900 flex-1 px-5 pt-6 gap-4`}>
+			<FeedCard>
+				<SerifText style={tw`text-4xl`}>Hello world asdsadsa</SerifText>
+				<SansSerifText style={tw`text-4xl font-bold`}>Hello world</SansSerifText>
+				<MonospaceText style={tw`text-4xl`}>asdjsakljdl</MonospaceText>
+				<Button style={tw`self-start`} label="Test" />
+			</FeedCard>
+			<Link href="/components" asChild>
+				<Pressable>
+					<SansSerifText style={tw`text-teal-600`}>View component library</SansSerifText>
+				</Pressable>
+			</Link>
+		</SafeAreaView>
+	)
+}

apps/aelis-client/src/app/modal.tsx

@@ -1,29 +0,0 @@
-import { Link } from "expo-router"
-import { StyleSheet } from "react-native"
-
-import { ThemedText } from "@/components/themed-text"
-import { ThemedView } from "@/components/themed-view"
-
-export default function ModalScreen() {
-	return (
-		<ThemedView style={styles.container}>
-			<ThemedText type="title">This is a modal</ThemedText>
-			<Link href="/" dismissTo style={styles.link}>
-				<ThemedText type="link">Go to home screen</ThemedText>
-			</Link>
-		</ThemedView>
-	)
-}
-
-const styles = StyleSheet.create({
-	container: {
-		flex: 1,
-		alignItems: "center",
-		justifyContent: "center",
-		padding: 20,
-	},
-	link: {
-		marginTop: 15,
-		paddingVertical: 15,
-	},
-})

apps/aelis-client/src/components/external-link.tsx

@@ -1,25 +0,0 @@
-import { Href, Link } from "expo-router"
-import { openBrowserAsync, WebBrowserPresentationStyle } from "expo-web-browser"
-import { type ComponentProps } from "react"
-
-type Props = Omit<ComponentProps<typeof Link>, "href"> & { href: Href & string }
-
-export function ExternalLink({ href, ...rest }: Props) {
-	return (
-		<Link
-			target="_blank"
-			{...rest}
-			href={href}
-			onPress={async (event) => {
-				if (process.env.EXPO_OS !== "web") {
-					// Prevent the default behavior of linking to the default browser on native.
-					event.preventDefault()
-					// Open the link in an in-app browser.
-					await openBrowserAsync(href, {
-						presentationStyle: WebBrowserPresentationStyle.AUTOMATIC,
-					})
-				}
-			}}
-		/>
-	)
-}

apps/aelis-client/src/components/haptic-tab.tsx

@@ -1,18 +0,0 @@
-import { BottomTabBarButtonProps } from "@react-navigation/bottom-tabs"
-import { PlatformPressable } from "@react-navigation/elements"
-import * as Haptics from "expo-haptics"
-
-export function HapticTab(props: BottomTabBarButtonProps) {
-	return (
-		<PlatformPressable
-			{...props}
-			onPressIn={(ev) => {
-				if (process.env.EXPO_OS === "ios") {
-					// Add a soft haptic feedback when pressing down on the tabs.
-					Haptics.impactAsync(Haptics.ImpactFeedbackStyle.Light)
-				}
-				props.onPressIn?.(ev)
-			}}
-		/>
-	)
-}

apps/aelis-client/src/components/hello-wave.tsx

@@ -1,20 +0,0 @@
-import Animated from "react-native-reanimated"
-
-export function HelloWave() {
-	return (
-		<Animated.Text
-			style={{
-				fontSize: 28,
-				lineHeight: 32,
-				marginTop: -6,
-				animationName: {
-					"50%": { transform: [{ rotate: "25deg" }] },
-				},
-				animationIterationCount: 4,
-				animationDuration: "300ms",
-			}}
-		>
-			👋
-		</Animated.Text>
-	)
-}

apps/aelis-client/src/components/parallax-scroll-view.tsx

@@ -1,82 +0,0 @@
-import type { PropsWithChildren, ReactElement } from "react"
-
-import { StyleSheet } from "react-native"
-import Animated, {
-	interpolate,
-	useAnimatedRef,
-	useAnimatedStyle,
-	useScrollOffset,
-} from "react-native-reanimated"
-
-import { ThemedView } from "@/components/themed-view"
-import { useColorScheme } from "@/hooks/use-color-scheme"
-import { useThemeColor } from "@/hooks/use-theme-color"
-
-const HEADER_HEIGHT = 250
-
-type Props = PropsWithChildren<{
-	headerImage: ReactElement
-	headerBackgroundColor: { dark: string; light: string }
-}>
-
-export default function ParallaxScrollView({
-	children,
-	headerImage,
-	headerBackgroundColor,
-}: Props) {
-	const backgroundColor = useThemeColor({}, "background")
-	const colorScheme = useColorScheme() ?? "light"
-	const scrollRef = useAnimatedRef<Animated.ScrollView>()
-	const scrollOffset = useScrollOffset(scrollRef)
-	const headerAnimatedStyle = useAnimatedStyle(() => {
-		return {
-			transform: [
-				{
-					translateY: interpolate(
-						scrollOffset.value,
-						[-HEADER_HEIGHT, 0, HEADER_HEIGHT],
-						[-HEADER_HEIGHT / 2, 0, HEADER_HEIGHT * 0.75],
-					),
-				},
-				{
-					scale: interpolate(scrollOffset.value, [-HEADER_HEIGHT, 0, HEADER_HEIGHT], [2, 1, 1]),
-				},
-			],
-		}
-	})
-
-	return (
-		<Animated.ScrollView
-			ref={scrollRef}
-			style={{ backgroundColor, flex: 1 }}
-			scrollEventThrottle={16}
-		>
-			<Animated.View
-				style={[
-					styles.header,
-					{ backgroundColor: headerBackgroundColor[colorScheme] },
-					headerAnimatedStyle,
-				]}
-			>
-				{headerImage}
-			</Animated.View>
-			<ThemedView style={styles.content}>{children}</ThemedView>
-		</Animated.ScrollView>
-	)
-}
-
-const styles = StyleSheet.create({
-	container: {
-		flex: 1,
-	},
-	header: {
-		height: HEADER_HEIGHT,
-		overflow: "hidden",
-	},
-	content: {
-		flex: 1,
-		padding: 32,
-		gap: 16,
-		overflow: "hidden",
-	},
-})

apps/aelis-client/src/components/showcase.tsx

@@ -0,0 +1,18 @@
+import { View } from "react-native"
+import tw from "twrnc"
+
+import { SansSerifText } from "./ui/sans-serif-text"
+
+export type Showcase = {
+	title: string
+	component: React.ComponentType
+}
+
+export function Section({ title, children }: { title: string; children: React.ReactNode }) {
+	return (
+		<View style={tw`gap-3`}>
+			<SansSerifText style={tw`text-sm text-stone-500 dark:text-stone-400`}>{title}</SansSerifText>
+			{children}
+		</View>
+	)
+}

apps/aelis-client/src/components/themed-text.tsx

@@ -1,60 +0,0 @@
-import { StyleSheet, Text, type TextProps } from "react-native"
-
-import { useThemeColor } from "@/hooks/use-theme-color"
-
-export type ThemedTextProps = TextProps & {
-	lightColor?: string
-	darkColor?: string
-	type?: "default" | "title" | "defaultSemiBold" | "subtitle" | "link"
-}
-
-export function ThemedText({
-	style,
-	lightColor,
-	darkColor,
-	type = "default",
-	...rest
-}: ThemedTextProps) {
-	const color = useThemeColor({ light: lightColor, dark: darkColor }, "text")
-
-	return (
-		<Text
-			style={[
-				{ color },
-				type === "default" ? styles.default : undefined,
-				type === "title" ? styles.title : undefined,
-				type === "defaultSemiBold" ? styles.defaultSemiBold : undefined,
-				type === "subtitle" ? styles.subtitle : undefined,
-				type === "link" ? styles.link : undefined,
-				style,
-			]}
-			{...rest}
-		/>
-	)
-}
-
-const styles = StyleSheet.create({
-	default: {
-		fontSize: 16,
-		lineHeight: 24,
-	},
-	defaultSemiBold: {
-		fontSize: 16,
-		lineHeight: 24,
-		fontWeight: "600",
-	},
-	title: {
-		fontSize: 32,
-		fontWeight: "bold",
-		lineHeight: 32,
-	},
-	subtitle: {
-		fontSize: 20,
-		fontWeight: "bold",
-	},
-	link: {
-		lineHeight: 30,
-		fontSize: 16,
-		color: "#0a7ea4",
-	},
-})

apps/aelis-client/src/components/themed-view.tsx

@@ -1,14 +0,0 @@
-import { View, type ViewProps } from "react-native"
-
-import { useThemeColor } from "@/hooks/use-theme-color"
-
-export type ThemedViewProps = ViewProps & {
-	lightColor?: string
-	darkColor?: string
-}
-
-export function ThemedView({ style, lightColor, darkColor, ...otherProps }: ThemedViewProps) {
-	const backgroundColor = useThemeColor({ light: lightColor, dark: darkColor }, "background")
-
-	return <View style={[{ backgroundColor }, style]} {...otherProps} />
-}

apps/aelis-client/src/components/ui/button.showcase.tsx

@@ -0,0 +1,42 @@
+import { View } from "react-native"
+import tw from "twrnc"
+
+import { Button } from "./button"
+import { type Showcase, Section } from "../showcase"
+
+function ButtonShowcase() {
+	return (
+		<View style={tw`gap-6`}>
+			<Section title="Default">
+				<Button style={tw`self-start`} label="Press me" />
+			</Section>
+			<Section title="Leading icon">
+				<Button
+					style={tw`self-start`}
+					label="Add item"
+					leadingIcon={<Button.Icon name="plus" />}
+				/>
+			</Section>
+			<Section title="Trailing icon">
+				<Button
+					style={tw`self-start`}
+					label="Next"
+					trailingIcon={<Button.Icon name="arrow-right" />}
+				/>
+			</Section>
+			<Section title="Both icons">
+				<Button
+					style={tw`self-start`}
+					label="Download"
+					leadingIcon={<Button.Icon name="download" />}
+					trailingIcon={<Button.Icon name="chevron-down" />}
+				/>
+			</Section>
+		</View>
+	)
+}
+
+export const buttonShowcase: Showcase = {
+	title: "Button",
+	component: ButtonShowcase,
+}

apps/aelis-client/src/components/ui/button.tsx

@@ -0,0 +1,43 @@
+import Feather from "@expo/vector-icons/Feather"
+import { type PressableProps, Pressable, View } from "react-native"
+import tw from "twrnc"
+
+import { SansSerifText } from "./sans-serif-text"
+
+type FeatherIconName = React.ComponentProps<typeof Feather>["name"]
+
+type ButtonIconProps = {
+	name: FeatherIconName
+}
+
+function ButtonIcon({ name }: ButtonIconProps) {
+	return <Feather name={name} size={18} color={tw.color("text-stone-100 dark:text-stone-200")} />
+}
+
+type ButtonProps = Omit<PressableProps, "children"> & {
+	label: string
+	leadingIcon?: React.ReactNode
+	trailingIcon?: React.ReactNode
+}
+
+export function Button({ style, label, leadingIcon, trailingIcon, ...props }: ButtonProps) {
+	const hasIcons = leadingIcon != null || trailingIcon != null
+
+	const textElement = <SansSerifText style={tw`text-stone-100 dark:text-stone-200 font-medium`}>{label}</SansSerifText>
+
+	return (
+		<Pressable style={[tw`rounded-full bg-teal-600 px-4 py-3 w-fit`, style]} {...props}>
+			{hasIcons ? (
+				<View style={tw`flex-row items-center gap-1.5`}>
+					{leadingIcon}
+					{textElement}
+					{trailingIcon}
+				</View>
+			) : (
+				textElement
+			)}
+		</Pressable>
+	)
+}
+
+Button.Icon = ButtonIcon

apps/aelis-client/src/components/ui/collapsible.tsx

@@ -1,46 +0,0 @@
-import { PropsWithChildren, useState } from "react"
-import { StyleSheet, TouchableOpacity } from "react-native"
-
-import { ThemedText } from "@/components/themed-text"
-import { ThemedView } from "@/components/themed-view"
-import { IconSymbol } from "@/components/ui/icon-symbol"
-import { Colors } from "@/constants/theme"
-import { useColorScheme } from "@/hooks/use-color-scheme"
-
-export function Collapsible({ children, title }: PropsWithChildren & { title: string }) {
-	const [isOpen, setIsOpen] = useState(false)
-	const theme = useColorScheme() ?? "light"
-
-	return (
-		<ThemedView>
-			<TouchableOpacity
-				style={styles.heading}
-				onPress={() => setIsOpen((value) => !value)}
-				activeOpacity={0.8}
-			>
-				<IconSymbol
-					name="chevron.right"
-					size={18}
-					weight="medium"
-					color={theme === "light" ? Colors.light.icon : Colors.dark.icon}
-					style={{ transform: [{ rotate: isOpen ? "90deg" : "0deg" }] }}
-				/>
-
-				<ThemedText type="defaultSemiBold">{title}</ThemedText>
-			</TouchableOpacity>
-			{isOpen && <ThemedView style={styles.content}>{children}</ThemedView>}
-		</ThemedView>
-	)
-}
-
-const styles = StyleSheet.create({
-	heading: {
-		flexDirection: "row",
-		alignItems: "center",
-		gap: 6,
-	},
-	content: {
-		marginTop: 6,
-		marginLeft: 24,
-	},
-})

apps/aelis-client/src/components/ui/feed-card.showcase.tsx

@@ -0,0 +1,32 @@
+import { View } from "react-native"
+import tw from "twrnc"
+
+import { Button } from "./button"
+import { FeedCard } from "./feed-card"
+import { SansSerifText } from "./sans-serif-text"
+import { SerifText } from "./serif-text"
+import { type Showcase, Section } from "../showcase"
+
+function FeedCardShowcase() {
+	return (
+		<View style={tw`gap-6`}>
+			<Section title="Default">
+				<FeedCard style={tw`p-4`}>
+					<SansSerifText>Card content goes here</SansSerifText>
+				</FeedCard>
+			</Section>
+			<Section title="With mixed content">
+				<FeedCard style={tw`p-4 gap-2`}>
+					<SerifText style={tw`text-xl`}>Title</SerifText>
+					<SansSerifText>Body text inside a feed card.</SansSerifText>
+					<Button style={tw`self-start mt-2`} label="Action" />
+				</FeedCard>
+			</Section>
+		</View>
+	)
+}
+
+export const feedCardShowcase: Showcase = {
+	title: "FeedCard",
+	component: FeedCardShowcase,
+}

apps/aelis-client/src/components/ui/feed-card.tsx

@@ -0,0 +1,6 @@
+import { View, type ViewProps } from "react-native"
+import tw from "twrnc"
+
+export function FeedCard({ style, ...props }: ViewProps) {
+	return <View style={[tw`border border-stone-200 dark:border-stone-800 rounded-lg`, style]} {...props} />
+}

apps/aelis-client/src/components/ui/icon-symbol.ios.tsx

@@ -1,32 +0,0 @@
-import { SymbolView, SymbolViewProps, SymbolWeight } from "expo-symbols"
-import { StyleProp, ViewStyle } from "react-native"
-
-export function IconSymbol({
-	name,
-	size = 24,
-	color,
-	style,
-	weight = "regular",
-}: {
-	name: SymbolViewProps["name"]
-	size?: number
-	color: string
-	style?: StyleProp<ViewStyle>
-	weight?: SymbolWeight
-}) {
-	return (
-		<SymbolView
-			weight={weight}
-			tintColor={color}
-			resizeMode="scaleAspectFit"
-			name={name}
-			style={[
-				{
-					width: size,
-					height: size,
-				},
-				style,
-			]}
-		/>
-	)
-}

apps/aelis-client/src/components/ui/icon-symbol.tsx

@@ -1,41 +0,0 @@
-// Fallback for using MaterialIcons on Android and web.
-
-import MaterialIcons from "@expo/vector-icons/MaterialIcons"
-import { SymbolWeight, SymbolViewProps } from "expo-symbols"
-import { ComponentProps } from "react"
-import { OpaqueColorValue, type StyleProp, type TextStyle } from "react-native"
-
-type IconMapping = Record<SymbolViewProps["name"], ComponentProps<typeof MaterialIcons>["name"]>
-type IconSymbolName = keyof typeof MAPPING
-
-/**
- * Add your SF Symbols to Material Icons mappings here.
- * - see Material Icons in the [Icons Directory](https://icons.expo.fyi).
- * - see SF Symbols in the [SF Symbols](https://developer.apple.com/sf-symbols/) app.
- */
-const MAPPING = {
-	"house.fill": "home",
-	"paperplane.fill": "send",
-	"chevron.left.forwardslash.chevron.right": "code",
-	"chevron.right": "chevron-right",
-} as IconMapping
-
-/**
- * An icon component that uses native SF Symbols on iOS, and Material Icons on Android and web.
- * This ensures a consistent look across platforms, and optimal resource usage.
- * Icon `name`s are based on SF Symbols and require manual mapping to Material Icons.
- */
-export function IconSymbol({
-	name,
-	size = 24,
-	color,
-	style,
-}: {
-	name: IconSymbolName
-	size?: number
-	color: string | OpaqueColorValue
-	style?: StyleProp<TextStyle>
-	weight?: SymbolWeight
-}) {
-	return <MaterialIcons color={color} size={size} name={MAPPING[name]} style={style} />
-}

apps/aelis-client/src/components/ui/monospace-text.showcase.tsx

@@ -0,0 +1,31 @@
+import { View } from "react-native"
+import tw from "twrnc"
+
+import { MonospaceText } from "./monospace-text"
+import { type Showcase, Section } from "../showcase"
+
+function MonospaceTextShowcase() {
+	return (
+		<View style={tw`gap-6`}>
+			<Section title="Sizes">
+				<View style={tw`gap-2`}>
+					<MonospaceText style={tw`text-sm`}>Small monospace text</MonospaceText>
+					<MonospaceText style={tw`text-base`}>Base monospace text</MonospaceText>
+					<MonospaceText style={tw`text-xl`}>Extra large monospace text</MonospaceText>
+					<MonospaceText style={tw`text-3xl`}>3XL monospace text</MonospaceText>
+				</View>
+			</Section>
+			<Section title="Code-like usage">
+				<View style={tw`bg-stone-200 dark:bg-stone-800 rounded-lg p-3`}>
+					<MonospaceText style={tw`text-sm`}>{"const x = 42;"}</MonospaceText>
+					<MonospaceText style={tw`text-sm`}>{"console.log(x);"}</MonospaceText>
+				</View>
+			</Section>
+		</View>
+	)
+}
+
+export const monospaceTextShowcase: Showcase = {
+	title: "MonospaceText",
+	component: MonospaceTextShowcase,
+}

apps/aelis-client/src/components/ui/monospace-text.tsx

@@ -0,0 +1,10 @@
+import { Text, type TextProps } from "react-native"
+import tw from "twrnc"
+
+export function MonospaceText({ children, style, ...props }: TextProps) {
+	return (
+		<Text style={[tw`text-stone-800 dark:text-stone-200`, { fontFamily: "Menlo" }, style]} {...props}>
+			{children}
+		</Text>
+	)
+}

apps/aelis-client/src/components/ui/sans-serif-text.showcase.tsx

@@ -0,0 +1,34 @@
+import { View } from "react-native"
+import tw from "twrnc"
+
+import { SansSerifText } from "./sans-serif-text"
+import { type Showcase, Section } from "../showcase"
+
+function SansSerifTextShowcase() {
+	return (
+		<View style={tw`gap-6`}>
+			<Section title="Sizes">
+				<View style={tw`gap-2`}>
+					<SansSerifText style={tw`text-sm`}>Small sans-serif text</SansSerifText>
+					<SansSerifText style={tw`text-base`}>Base sans-serif text</SansSerifText>
+					<SansSerifText style={tw`text-xl`}>Extra large sans-serif text</SansSerifText>
+					<SansSerifText style={tw`text-3xl`}>3XL sans-serif text</SansSerifText>
+				</View>
+			</Section>
+			<Section title="Weights">
+				<View style={tw`gap-2`}>
+					<SansSerifText style={tw`font-light`}>Light weight</SansSerifText>
+					<SansSerifText style={tw`font-normal`}>Normal weight</SansSerifText>
+					<SansSerifText style={tw`font-medium`}>Medium weight</SansSerifText>
+					<SansSerifText style={tw`font-semibold`}>Semibold weight</SansSerifText>
+					<SansSerifText style={tw`font-bold`}>Bold weight</SansSerifText>
+				</View>
+			</Section>
+		</View>
+	)
+}
+
+export const sansSerifTextShowcase: Showcase = {
+	title: "SansSerifText",
+	component: SansSerifTextShowcase,
+}

apps/aelis-client/src/components/ui/sans-serif-text.tsx

@@ -0,0 +1,10 @@
+import { Text, type TextProps } from "react-native"
+import tw from "twrnc"
+
+export function SansSerifText({ children, style, ...props }: TextProps) {
+	return (
+		<Text style={[tw`text-stone-800 dark:text-stone-200`, { fontFamily: "Inter" }, style]} {...props}>
+			{children}
+		</Text>
+	)
+}

apps/aelis-client/src/components/ui/serif-text.showcase.tsx

@@ -0,0 +1,25 @@
+import { View } from "react-native"
+import tw from "twrnc"
+
+import { SerifText } from "./serif-text"
+import { type Showcase, Section } from "../showcase"
+
+function SerifTextShowcase() {
+	return (
+		<View style={tw`gap-6`}>
+			<Section title="Sizes">
+				<View style={tw`gap-2`}>
+					<SerifText style={tw`text-sm`}>Small serif text</SerifText>
+					<SerifText style={tw`text-base`}>Base serif text</SerifText>
+					<SerifText style={tw`text-xl`}>Extra large serif text</SerifText>
+					<SerifText style={tw`text-3xl`}>3XL serif text</SerifText>
+				</View>
+			</Section>
+		</View>
+	)
+}
+
+export const serifTextShowcase: Showcase = {
+	title: "SerifText",
+	component: SerifTextShowcase,
+}

apps/aelis-client/src/components/ui/serif-text.tsx

@@ -0,0 +1,10 @@
+import { Text, type TextProps } from "react-native"
+import tw from "twrnc"
+
+export function SerifText({ children, style, ...props }: TextProps) {
+	return (
+		<Text style={[tw`text-stone-800 dark:text-stone-200`, { fontFamily: "Source Serif 4" }, style]} {...props}>
+			{children}
+		</Text>
+	)
+}

apps/aelis-client/src/constants/theme.ts

@@ -1,53 +0,0 @@
-/**
- * Below are the colors that are used in the app. The colors are defined in the light and dark mode.
- * There are many other ways to style your app. For example, [Nativewind](https://www.nativewind.dev/), [unistyles](https://reactnativeunistyles.vercel.app), etc.
- */
-
-import { Platform } from "react-native"
-
-const tintColorLight = "#0a7ea4"
-const tintColorDark = "#fff"
-
-export const Colors = {
-	light: {
-		text: "#11181C",
-		background: "#fff",
-		tint: tintColorLight,
-		icon: "#687076",
-		tabIconDefault: "#687076",
-		tabIconSelected: tintColorLight,
-	},
-	dark: {
-		text: "#ECEDEE",
-		background: "#151718",
-		tint: tintColorDark,
-		icon: "#9BA1A6",
-		tabIconDefault: "#9BA1A6",
-		tabIconSelected: tintColorDark,
-	},
-}
-
-export const Fonts = Platform.select({
-	ios: {
-		/** iOS `UIFontDescriptorSystemDesignDefault` */
-		sans: "system-ui",
-		/** iOS `UIFontDescriptorSystemDesignSerif` */
-		serif: "ui-serif",
-		/** iOS `UIFontDescriptorSystemDesignRounded` */
-		rounded: "ui-rounded",
-		/** iOS `UIFontDescriptorSystemDesignMonospaced` */
-		mono: "ui-monospace",
-	},
-	default: {
-		sans: "normal",
-		serif: "serif",
-		rounded: "normal",
-		mono: "monospace",
-	},
-	web: {
-		sans: "system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif",
-		serif: "Georgia, 'Times New Roman', serif",
-		rounded: "'SF Pro Rounded', 'Hiragino Maru Gothic ProN', Meiryo, 'MS PGothic', sans-serif",
-		mono: "SFMono-Regular, Menlo, Monaco, Consolas, 'Liberation Mono', 'Courier New', monospace",
-	},
-})

apps/aelis-client/src/hooks/use-color-scheme.ts

@@ -1 +0,0 @@
-export { useColorScheme } from "react-native"

apps/aelis-client/src/hooks/use-color-scheme.web.ts

@@ -1,21 +0,0 @@
-import { useEffect, useState } from "react"
-import { useColorScheme as useRNColorScheme } from "react-native"
-
-/**
- * To support static rendering, this value needs to be re-calculated on the client side for web
- */
-export function useColorScheme() {
-	const [hasHydrated, setHasHydrated] = useState(false)
-
-	useEffect(() => {
-		setHasHydrated(true)
-	}, [])
-
-	const colorScheme = useRNColorScheme()
-
-	if (hasHydrated) {
-		return colorScheme
-	}
-
-	return "light"
-}

apps/aelis-client/src/hooks/use-theme-color.ts

@@ -1,21 +0,0 @@
-/**
- * Learn more about light and dark modes:
- * https://docs.expo.dev/guides/color-schemes/
- */
-
-import { Colors } from "@/constants/theme"
-import { useColorScheme } from "@/hooks/use-color-scheme"
-
-export function useThemeColor(
-	props: { light?: string; dark?: string },
-	colorName: keyof typeof Colors.light & keyof typeof Colors.dark,
-) {
-	const theme = useColorScheme() ?? "light"
-	const colorFromProps = props[theme]
-
-	if (colorFromProps) {
-		return colorFromProps
-	} else {
-		return Colors[theme][colorName]
-	}
-}

apps/aelis-client/src/json-render/catalog.ts

@@ -0,0 +1,68 @@
+import { defineCatalog } from "@json-render/core"
+import { schema } from "@json-render/react-native/schema"
+import { z } from "zod"
+
+export const catalog = defineCatalog(schema, {
+	components: {
+		View: {
+			props: z.object({
+				style: z.string().nullable(),
+			}),
+			slots: ["default"],
+			description:
+				"Generic layout container. The style prop accepts a twrnc class string (e.g. 'flex-row gap-2 p-4 items-center').",
+			example: { style: "flex-row gap-2 p-4" },
+		},
+		Button: {
+			props: z.object({
+				label: z.string(),
+				leadingIcon: z.string().nullable(),
+				trailingIcon: z.string().nullable(),
+			}),
+			events: ["press"],
+			slots: [],
+			description:
+				"Pressable button with a label and optional Feather icons. Icon values are Feather icon names (e.g. 'plus', 'arrow-right'). Bind on.press to trigger an action.",
+			example: { label: "Add item", leadingIcon: "plus", trailingIcon: null },
+		},
+		FeedCard: {
+			props: z.object({
+				style: z.string().nullable(),
+			}),
+			slots: ["default"],
+			description: "Bordered card container for feed content. The style prop accepts a twrnc class string.",
+			example: { style: "p-4 gap-2" },
+		},
+		SansSerifText: {
+			props: z.object({
+				text: z.string(),
+				style: z.string().nullable(),
+			}),
+			slots: [],
+			description:
+				"Sans-serif text (Inter font). The style prop accepts a twrnc class string for size, weight, color, etc.",
+			example: { text: "Hello world", style: "text-base font-medium" },
+		},
+		SerifText: {
+			props: z.object({
+				text: z.string(),
+				style: z.string().nullable(),
+			}),
+			slots: [],
+			description:
+				"Serif text (Source Serif 4 font). The style prop accepts a twrnc class string for size, color, etc.",
+			example: { text: "Heading", style: "text-xl" },
+		},
+		MonospaceText: {
+			props: z.object({
+				text: z.string(),
+				style: z.string().nullable(),
+			}),
+			slots: [],
+			description:
+				"Monospace text (Menlo font). The style prop accepts a twrnc class string for size, color, etc.",
+			example: { text: "const x = 42", style: "text-sm" },
+		},
+	},
+	actions: {},
+})

apps/aelis-client/src/json-render/index.ts

@@ -0,0 +1,2 @@
+export { catalog } from "./catalog"
+export { registry } from "./registry"

apps/aelis-client/src/json-render/registry.tsx

@@ -0,0 +1,39 @@
+import { defineRegistry } from "@json-render/react-native"
+import { View } from "react-native"
+import tw from "twrnc"
+
+import { Button } from "@/components/ui/button"
+import { FeedCard } from "@/components/ui/feed-card"
+import { MonospaceText } from "@/components/ui/monospace-text"
+import { SansSerifText } from "@/components/ui/sans-serif-text"
+import { SerifText } from "@/components/ui/serif-text"
+
+import { catalog } from "./catalog"
+
+type ButtonIconName = React.ComponentProps<typeof Button.Icon>["name"]
+
+export const { registry } = defineRegistry(catalog, {
+	components: {
+		View: ({ props, children }) => <View style={props.style ? tw`${props.style}` : undefined}>{children}</View>,
+		Button: ({ props, emit }) => (
+			<Button
+				label={props.label}
+				leadingIcon={props.leadingIcon ? <Button.Icon name={props.leadingIcon as ButtonIconName} /> : undefined}
+				trailingIcon={props.trailingIcon ? <Button.Icon name={props.trailingIcon as ButtonIconName} /> : undefined}
+				onPress={() => emit("press")}
+			/>
+		),
+		FeedCard: ({ props, children }) => (
+			<FeedCard style={props.style ? tw`${props.style}` : undefined}>{children}</FeedCard>
+		),
+		SansSerifText: ({ props }) => (
+			<SansSerifText style={props.style ? tw`${props.style}` : undefined}>{props.text}</SansSerifText>
+		),
+		SerifText: ({ props }) => (
+			<SerifText style={props.style ? tw`${props.style}` : undefined}>{props.text}</SerifText>
+		),
+		MonospaceText: ({ props }) => (
+			<MonospaceText style={props.style ? tw`${props.style}` : undefined}>{props.text}</MonospaceText>
+		),
+	},
+})

bun.lock

@@ -6,7 +6,7 @@
       "name": "aelis",
       "devDependencies": {
         "@json-render/core": "^0.12.1",
-        "@nym.sh/jrx": "^0.1.0",
+        "@nym.sh/jrx": "^0.2.0",
         "@types/bun": "latest",
         "oxfmt": "^0.24.0",
         "oxlint": "^1.39.0",
@@ -42,6 +42,7 @@
         "@expo-google-fonts/inter": "^0.4.2",
         "@expo-google-fonts/source-serif-4": "^0.4.1",
         "@expo/vector-icons": "^15.0.3",
+        "@json-render/react-native": "^0.13.0",
         "@react-navigation/bottom-tabs": "^7.4.0",
         "@react-navigation/elements": "^2.6.3",
         "@react-navigation/native": "^7.1.8",
@@ -70,6 +71,7 @@
         "react-native-web": "~0.21.0",
         "react-native-worklets": "0.5.1",
         "twrnc": "^4.16.0",
+        "zod": "^4.3.6",
       },
       "devDependencies": {
         "@types/react": "~19.1.0",
@@ -108,6 +110,14 @@
         "vite-tsconfig-paths": "^5.1.4",
       },
     },
+    "packages/aelis-components": {
+      "name": "@aelis/components",
+      "version": "0.0.0",
+      "peerDependencies": {
+        "@json-render/core": "*",
+        "@nym.sh/jrx": "*",
+      },
+    },
     "packages/aelis-core": {
       "name": "@aelis/core",
       "version": "0.0.0",
@@ -167,10 +177,15 @@
       "name": "@aelis/source-tfl",
       "version": "0.0.0",
       "dependencies": {
+        "@aelis/components": "workspace:*",
         "@aelis/core": "workspace:*",
         "@aelis/source-location": "workspace:*",
         "arktype": "^2.1.0",
       },
+      "peerDependencies": {
+        "@json-render/core": "*",
+        "@nym.sh/jrx": "*",
+      },
     },
     "packages/aelis-source-weatherkit": {
       "name": "@aelis/source-weatherkit",
@@ -187,6 +202,8 @@
 
     "@aelis/backend": ["@aelis/backend@workspace:apps/aelis-backend"],
 
+    "@aelis/components": ["@aelis/components@workspace:packages/aelis-components"],
+
     "@aelis/core": ["@aelis/core@workspace:packages/aelis-core"],
 
     "@aelis/data-source-weatherkit": ["@aelis/data-source-weatherkit@workspace:packages/aelis-data-source-weatherkit"],
@@ -657,6 +674,8 @@
 
     "@json-render/core": ["@json-render/core@0.12.1", "", { "dependencies": { "zod": "^4.3.6" } }, "sha512-1tV/481GPHmIRd6lXfWcTaIslQusmDg5lzcSBzWLkSXjF9sjjyOQL090in7uHT4tOMWkdmlEJOW5H9C72PsUEQ=="],
 
+    "@json-render/react-native": ["@json-render/react-native@0.13.0", "", { "dependencies": { "@json-render/core": "0.13.0" }, "peerDependencies": { "react": "^18.0.0 || ^19.0.0", "react-native": ">=0.71.0", "zod": "^4.0.0" } }, "sha512-uUrK28xPb7LuyYsi9cTnvrnXnVBG0OwU5Up35aaXwcWMLrfqxJ7oWfF97HlDvZIckQtm0VEngAXhHMW97qBEkg=="],
+
     "@mjackson/node-fetch-server": ["@mjackson/node-fetch-server@0.2.0", "", {}, "sha512-EMlH1e30yzmTpGLQjlFmaDAjyOeZhng1/XCd7DExR8PNAnG/G1tyruZxEoUe11ClnwGhGrtsdnyyUx1frSzjng=="],
 
     "@mongodb-js/saslprep": ["@mongodb-js/saslprep@1.4.6", "", { "dependencies": { "sparse-bitfield": "^3.0.3" } }, "sha512-y+x3H1xBZd38n10NZF/rEBlvDOOMQ6LKUTHqr8R9VkJ+mmQOYtJFxIlkkK8fZrtOiL6VixbOBWMbZGBdal3Z1g=="],
@@ -677,7 +696,7 @@
 
     "@nolyfill/is-core-module": ["@nolyfill/is-core-module@1.0.39", "", {}, "sha512-nn5ozdjYQpUCZlWGuxcJY/KpxkWQs4DcbMCmKojjyrYDEAGy4Ce19NN4v5MduafTwJlbKc99UA8YhSVqq9yPZA=="],
 
-    "@nym.sh/jrx": ["@nym.sh/jrx@0.1.0", "", { "peerDependencies": { "@json-render/core": ">=0.10.0" } }, "sha512-mu6fkAP/TI9FuP8A4WMCrcucpUtWF5xBTcETnrjOtvEED9i+7sQKuoOyhJeF6QaSuUkAA/8t3Xx3kYUjcAPFbw=="],
+    "@nym.sh/jrx": ["@nym.sh/jrx@0.2.0", "", { "peerDependencies": { "@json-render/core": ">=0.10.0" } }, "sha512-jd7Z1Q6T21366MtSUnwCFiu6Yl1AdNc9s5m6HxeUg265P+0enZCiyyxOuHsFwvpUcSEs/2DVBsqfMptdca44lA=="],
 
     "@oclif/core": ["@oclif/core@4.8.4", "", { "dependencies": { "ansi-escapes": "^4.3.2", "ansis": "^3.17.0", "clean-stack": "^3.0.1", "cli-spinners": "^2.9.2", "debug": "^4.4.3", "ejs": "^3.1.10", "get-package-type": "^0.1.0", "indent-string": "^4.0.0", "is-wsl": "^2.2.0", "lilconfig": "^3.1.3", "minimatch": "^10.2.4", "semver": "^7.7.3", "string-width": "^4.2.3", "supports-color": "^8", "tinyglobby": "^0.2.14", "widest-line": "^3.1.0", "wordwrap": "^1.0.0", "wrap-ansi": "^7.0.0" } }, "sha512-UTAqwXJJyRvLBvosL+1uPZYSpr8lEHgUb/EVGbPXo5WZqUIBHfJ0sR2bkBEsrj00/ar4IegKxx4YK0wn2c8SQg=="],
 
@@ -3457,6 +3476,8 @@
 
     "@jest/transform/write-file-atomic": ["write-file-atomic@4.0.2", "", { "dependencies": { "imurmurhash": "^0.1.4", "signal-exit": "^3.0.7" } }, "sha512-7KxauUdBmSdWnmpaGFg+ppNjKF8uNLry8LyzjauQDOVONfFLNKrKvQOxZ/VuTIcS/gge/YNahf5RIIQWTSarlg=="],
 
+    "@json-render/react-native/@json-render/core": ["@json-render/core@0.13.0", "", { "dependencies": { "zod": "^4.3.6" } }, "sha512-CXmCsc8BHDRq45ScVd+qgvjTbwZHPVpVD05WnTqgDxqfY3LGXu5vxaQRSwYoEodg/DGcZq/4HSj4ipVvrzy3qQ=="],
+
     "@mrleebo/prisma-ast/lilconfig": ["lilconfig@2.1.0", "", {}, "sha512-utWOt/GHzuUxnLKxB6dk81RoOeoNeHgbrXiuGk4yyF5qlRz+iIVWu56E2fqGHFrXz0QNUhLB/8nKqvRH66JKGQ=="],
 
     "@oclif/core/minimatch": ["minimatch@10.2.4", "", { "dependencies": { "brace-expansion": "^5.0.2" } }, "sha512-oRjTw/97aTBN0RHbYCdtF1MQfvusSIBQM0IZEgzl6426+8jSC0nF1a/GmnVLpfB9yyr6g6FTqWqiZVbxrtaCIg=="],

package.json

@@ -15,7 +15,7 @@
 	},
 	"devDependencies": {
 		"@json-render/core": "^0.12.1",
-		"@nym.sh/jrx": "^0.1.0",
+		"@nym.sh/jrx": "^0.2.0",
 		"@types/bun": "latest",
 		"oxfmt": "^0.24.0",
 		"oxlint": "^1.39.0"

packages/aelis-components/package.json

@@ -0,0 +1,14 @@
+{
+	"name": "@aelis/components",
+	"version": "0.0.0",
+	"type": "module",
+	"main": "src/index.ts",
+	"types": "src/index.ts",
+	"scripts": {
+		"test": "bun test ./src"
+	},
+	"peerDependencies": {
+		"@json-render/core": "*",
+		"@nym.sh/jrx": "*"
+	}
+}

packages/aelis-components/src/button.ts

@@ -0,0 +1,15 @@
+import type { JrxNode } from "@nym.sh/jrx"
+
+import { jsx } from "@nym.sh/jrx/jsx-runtime"
+
+export type ButtonProps = {
+	label: string
+	leadingIcon?: string
+	trailingIcon?: string
+	style?: string
+	children?: JrxNode | JrxNode[]
+}
+
+export function Button(props: ButtonProps): JrxNode {
+	return jsx("Button", props)
+}

packages/aelis-components/src/components.test.tsx

@@ -0,0 +1,155 @@
+/** @jsxImportSource @nym.sh/jrx */
+
+import { render } from "@nym.sh/jrx"
+import { describe, expect, test } from "bun:test"
+
+import { Button } from "./button.ts"
+import { FeedCard } from "./feed-card.ts"
+import { MonospaceText } from "./monospace-text.ts"
+import { SansSerifText } from "./sans-serif-text.ts"
+import { SerifText } from "./serif-text.ts"
+
+describe("Button", () => {
+	test("renders with label", () => {
+		const spec = render(<Button label="Press me" />)
+
+		expect(spec.root).toStartWith("button-")
+		const root = spec.elements[spec.root]!
+		expect(root.type).toBe("Button")
+		expect(root.props).toEqual({ label: "Press me" })
+	})
+
+	test("renders with icon props", () => {
+		const spec = render(<Button label="Add" leadingIcon="plus" trailingIcon="arrow-right" />)
+
+		const root = spec.elements[spec.root]!
+		expect(root.type).toBe("Button")
+		expect(root.props).toEqual({
+			label: "Add",
+			leadingIcon: "plus",
+			trailingIcon: "arrow-right",
+		})
+	})
+
+	test("passes style as string prop", () => {
+		const spec = render(<Button label="Go" style="px-4 py-2" />)
+
+		const root = spec.elements[spec.root]!
+		expect(root.props.style).toBe("px-4 py-2")
+	})
+})
+
+describe("FeedCard", () => {
+	test("renders as container", () => {
+		const spec = render(<FeedCard />)
+
+		expect(spec.root).toStartWith("feedcard-")
+		const root = spec.elements[spec.root]!
+		expect(root.type).toBe("FeedCard")
+	})
+
+	test("renders with a single child", () => {
+		const spec = render(
+			<FeedCard>
+				<SansSerifText content="Only child" />
+			</FeedCard>,
+		)
+
+		const root = spec.elements[spec.root]!
+		expect(root.children).toHaveLength(1)
+		const child = spec.elements[root.children![0]!]!
+		expect(child.type).toBe("SansSerifText")
+		expect(child.props).toEqual({ content: "Only child" })
+	})
+
+	test("passes style as string prop", () => {
+		const spec = render(<FeedCard style="p-4 border rounded-lg" />)
+
+		const root = spec.elements[spec.root]!
+		expect(root.props.style).toBe("p-4 border rounded-lg")
+	})
+})
+
+describe("SansSerifText", () => {
+	test("renders with content prop", () => {
+		const spec = render(<SansSerifText content="Hello" />)
+
+		expect(spec.root).toStartWith("sansseriftext-")
+		const root = spec.elements[spec.root]!
+		expect(root.type).toBe("SansSerifText")
+		expect(root.props).toEqual({ content: "Hello" })
+	})
+
+	test("passes style as string prop", () => {
+		const spec = render(<SansSerifText content="Hello" style="text-sm text-stone-500" />)
+
+		const root = spec.elements[spec.root]!
+		expect(root.props.style).toBe("text-sm text-stone-500")
+	})
+})
+
+describe("SerifText", () => {
+	test("renders with content prop", () => {
+		const spec = render(<SerifText content="Title" />)
+
+		expect(spec.root).toStartWith("seriftext-")
+		const root = spec.elements[spec.root]!
+		expect(root.type).toBe("SerifText")
+		expect(root.props).toEqual({ content: "Title" })
+	})
+
+	test("passes style as string prop", () => {
+		const spec = render(<SerifText content="Title" style="text-xl" />)
+
+		const root = spec.elements[spec.root]!
+		expect(root.props.style).toBe("text-xl")
+	})
+})
+
+describe("MonospaceText", () => {
+	test("renders with content prop", () => {
+		const spec = render(<MonospaceText content="code()" />)
+
+		expect(spec.root).toStartWith("monospacetext-")
+		const root = spec.elements[spec.root]!
+		expect(root.type).toBe("MonospaceText")
+		expect(root.props).toEqual({ content: "code()" })
+	})
+
+	test("passes style as string prop", () => {
+		const spec = render(<MonospaceText content="code()" style="text-xs" />)
+
+		const root = spec.elements[spec.root]!
+		expect(root.props.style).toBe("text-xs")
+	})
+})
+
+describe("composite", () => {
+	test("FeedCard with nested children", () => {
+		const spec = render(
+			<FeedCard>
+				<SerifText content="Weather" />
+				<SansSerifText content="Sunny, 22C" />
+				<Button label="Details" />
+			</FeedCard>,
+		)
+
+		const root = spec.elements[spec.root]!
+		expect(root.type).toBe("FeedCard")
+		expect(root.children).toHaveLength(3)
+
+		const childKeys = root.children!
+		const child0 = spec.elements[childKeys[0]!]!
+		const child1 = spec.elements[childKeys[1]!]!
+		const child2 = spec.elements[childKeys[2]!]!
+
+		expect(child0.type).toBe("SerifText")
+		expect(child0.props).toEqual({ content: "Weather" })
+
+		expect(child1.type).toBe("SansSerifText")
+		expect(child1.props).toEqual({ content: "Sunny, 22C" })
+
+		expect(child2.type).toBe("Button")
+		expect(child2.props).toEqual({ label: "Details" })
+	})
+})

packages/aelis-components/src/feed-card.ts

@@ -0,0 +1,12 @@
+import type { JrxNode } from "@nym.sh/jrx"
+
+import { jsx } from "@nym.sh/jrx/jsx-runtime"
+
+export type FeedCardProps = {
+	style?: string
+	children?: JrxNode | JrxNode[]
+}
+
+export function FeedCard(props: FeedCardProps): JrxNode {
+	return jsx("FeedCard", props)
+}

packages/aelis-components/src/index.ts

@@ -0,0 +1,14 @@
+export type { ButtonProps } from "./button.ts"
+export { Button } from "./button.ts"
+
+export type { FeedCardProps } from "./feed-card.ts"
+export { FeedCard } from "./feed-card.ts"
+
+export type { SansSerifTextProps } from "./sans-serif-text.ts"
+export { SansSerifText } from "./sans-serif-text.ts"
+
+export type { SerifTextProps } from "./serif-text.ts"
+export { SerifText } from "./serif-text.ts"
+
+export type { MonospaceTextProps } from "./monospace-text.ts"
+export { MonospaceText } from "./monospace-text.ts"

packages/aelis-components/src/monospace-text.ts

@@ -0,0 +1,13 @@
+import type { JrxNode } from "@nym.sh/jrx"
+
+import { jsx } from "@nym.sh/jrx/jsx-runtime"
+
+export type MonospaceTextProps = {
+	content?: string
+	style?: string
+	children?: JrxNode | JrxNode[]
+}
+
+export function MonospaceText(props: MonospaceTextProps): JrxNode {
+	return jsx("MonospaceText", props)
+}

packages/aelis-components/src/sans-serif-text.ts

@@ -0,0 +1,13 @@
+import type { JrxNode } from "@nym.sh/jrx"
+
+import { jsx } from "@nym.sh/jrx/jsx-runtime"
+
+export type SansSerifTextProps = {
+	content?: string
+	style?: string
+	children?: JrxNode | JrxNode[]
+}
+
+export function SansSerifText(props: SansSerifTextProps): JrxNode {
+	return jsx("SansSerifText", props)
+}

packages/aelis-components/src/serif-text.ts

@@ -0,0 +1,13 @@
+import type { JrxNode } from "@nym.sh/jrx"
+
+import { jsx } from "@nym.sh/jrx/jsx-runtime"
+
+export type SerifTextProps = {
+	content?: string
+	style?: string
+	children?: JrxNode | JrxNode[]
+}
+
+export function SerifText(props: SerifTextProps): JrxNode {
+	return jsx("SerifText", props)
+}

packages/aelis-components/tsconfig.json

@@ -0,0 +1,7 @@
+{
+	"extends": "../../tsconfig.json",
+	"compilerOptions": {
+		"jsxImportSource": "@nym.sh/jrx"
+	},
+	"include": ["src"]
+}

packages/aelis-core/src/feed.ts

@@ -79,6 +79,12 @@ export interface FeedItem<
 	slots?: Record<string, Slot>
 }
 
+/** Takes a FeedItem and returns a JRX node tree for rendering. */
+export type FeedItemRenderer<
+	TType extends string = string,
+	TData extends Record<string, unknown> = Record<string, unknown>,
+> = (item: FeedItem<TType, TData>) => JrxNode
+
 /** A FeedItem with a JRX UI tree attached for client-side rendering. */
 export interface RenderedFeedItem<
 	TType extends string = string,

packages/aelis-core/src/index.ts

@@ -7,7 +7,7 @@ export type { ActionDefinition } from "./action"
 export { UnknownActionError } from "./action"
 
 // Feed
-export type { FeedItem, FeedItemSignals, RenderedFeedItem, Slot } from "./feed"
+export type { FeedItem, FeedItemRenderer, FeedItemSignals, RenderedFeedItem, Slot } from "./feed"
 export { TimeRelevance } from "./feed"
 
 // Feed Source

packages/aelis-source-tfl/package.json

@@ -10,7 +10,12 @@
 	},
 	"dependencies": {
 		"@aelis/core": "workspace:*",
+		"@aelis/components": "workspace:*",
 		"@aelis/source-location": "workspace:*",
 		"arktype": "^2.1.0"
+	},
+	"peerDependencies": {
+		"@json-render/core": "*",
+		"@nym.sh/jrx": "*"
 	}
 }

packages/aelis-source-tfl/src/index.ts

@@ -11,3 +11,4 @@ export {
 	type TflLineStatus,
 	type TflSourceOptions,
 } from "./types.ts"
+export { renderTflAlert } from "./renderer.tsx"

packages/aelis-source-tfl/src/renderer.test.tsx

@@ -0,0 +1,103 @@
+/** @jsxImportSource @nym.sh/jrx */
+import { render } from "@nym.sh/jrx"
+import { describe, expect, test } from "bun:test"
+
+import type { TflAlertFeedItem } from "./types.ts"
+
+import { renderTflAlert } from "./renderer.tsx"
+
+function makeItem(overrides: Partial<TflAlertFeedItem["data"]> = {}): TflAlertFeedItem {
+	return {
+		id: "tfl-alert-northern-minor-delays",
+		type: "tfl-alert",
+		timestamp: new Date("2026-01-15T12:00:00Z"),
+		data: {
+			line: "northern",
+			lineName: "Northern",
+			severity: "minor-delays",
+			description: "Minor delays due to signal failure",
+			closestStationDistance: null,
+			...overrides,
+		},
+	}
+}
+
+describe("renderTflAlert", () => {
+	test("renders a FeedCard with title and description", () => {
+		const node = renderTflAlert(makeItem())
+		const spec = render(node)
+
+		const root = spec.elements[spec.root]!
+		expect(root.type).toBe("FeedCard")
+		expect(root.children!.length).toBeGreaterThanOrEqual(2)
+
+		const title = spec.elements[root.children![0]!]!
+		expect(title.type).toBe("SansSerifText")
+		expect(title.props.content).toBe("Northern · Minor delays")
+
+		const body = spec.elements[root.children![1]!]!
+		expect(body.type).toBe("SansSerifText")
+		expect(body.props.content).toBe("Minor delays due to signal failure")
+	})
+
+	test("shows nearest station distance when available", () => {
+		const node = renderTflAlert(makeItem({ closestStationDistance: 0.35 }))
+		const spec = render(node)
+
+		const root = spec.elements[spec.root]!
+		expect(root.children).toHaveLength(3)
+
+		const caption = spec.elements[root.children![2]!]!
+		expect(caption.type).toBe("SansSerifText")
+		expect(caption.props.content).toBe("Nearest station: 350m away")
+	})
+
+	test("formats distance in km when >= 1km", () => {
+		const node = renderTflAlert(makeItem({ closestStationDistance: 2.456 }))
+		const spec = render(node)
+
+		const root = spec.elements[spec.root]!
+		const caption = spec.elements[root.children![2]!]!
+		expect(caption.props.content).toBe("Nearest station: 2.5km away")
+	})
+
+	test("formats near-1km boundary as km not meters", () => {
+		const node = renderTflAlert(makeItem({ closestStationDistance: 0.9999 }))
+		const spec = render(node)
+
+		const root = spec.elements[spec.root]!
+		const caption = spec.elements[root.children![2]!]!
+		expect(caption.props.content).toBe("Nearest station: 1.0km away")
+	})
+
+	test("omits station distance when null", () => {
+		const node = renderTflAlert(makeItem({ closestStationDistance: null }))
+		const spec = render(node)
+
+		const root = spec.elements[spec.root]!
+		// Title + body only, no caption (empty fragment doesn't produce a child)
+		const children = root.children!.filter((key) => {
+			const el = spec.elements[key]
+			return el && el.type !== "Fragment"
+		})
+		expect(children).toHaveLength(2)
+	})
+
+	test("renders closure severity label", () => {
+		const node = renderTflAlert(makeItem({ severity: "closure", lineName: "Central" }))
+		const spec = render(node)
+
+		const root = spec.elements[spec.root]!
+		const title = spec.elements[root.children![0]!]!
+		expect(title.props.content).toBe("Central · Closed")
+	})
+
+	test("renders major delays severity label", () => {
+		const node = renderTflAlert(makeItem({ severity: "major-delays", lineName: "Jubilee" }))
+		const spec = render(node)
+
+		const root = spec.elements[spec.root]!
+		const title = spec.elements[root.children![0]!]!
+		expect(title.props.content).toBe("Jubilee · Major delays")
+	})
+})

packages/aelis-source-tfl/src/renderer.tsx

@@ -0,0 +1,40 @@
+/** @jsxImportSource @nym.sh/jrx */
+import type { FeedItemRenderer } from "@aelis/core"
+
+import { FeedCard, SansSerifText } from "@aelis/components"
+
+import type { TflAlertData } from "./types.ts"
+
+import { TflAlertSeverity } from "./types.ts"
+
+const SEVERITY_LABEL: Record<TflAlertSeverity, string> = {
+	[TflAlertSeverity.Closure]: "Closed",
+	[TflAlertSeverity.MajorDelays]: "Major delays",
+	[TflAlertSeverity.MinorDelays]: "Minor delays",
+}
+
+function formatDistance(km: number): string {
+	const meters = Math.round(km * 1000)
+	if (meters < 1000) {
+		return `${meters}m away`
+	}
+	return `${(meters / 1000).toFixed(1)}km away`
+}
+
+export const renderTflAlert: FeedItemRenderer<"tfl-alert", TflAlertData> = (item) => {
+	const { lineName, severity, description, closestStationDistance } = item.data
+	const severityLabel = SEVERITY_LABEL[severity]
+
+	return (
+		<FeedCard>
+			<SansSerifText content={`${lineName} · ${severityLabel}`} style="text-base font-semibold" />
+			<SansSerifText content={description} style="text-sm" />
+			{closestStationDistance !== null ? (
+				<SansSerifText
+					content={`Nearest station: ${formatDistance(closestStationDistance)}`}
+					style="text-xs text-stone-500"
+				/>
+			) : null}
+		</FeedCard>
+	)
+}

packages/aelis-source-tfl/tsconfig.json

@@ -0,0 +1,7 @@
+{
+	"extends": "../../tsconfig.json",
+	"compilerOptions": {
+		"jsxImportSource": "@nym.sh/jrx"
+	},
+	"include": ["src"]
+}