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Alex Spinov
Alex Spinov

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Expo Router Has a Free API That Most Developers Dont Know About

#reactnative #expo #mobile #javascript

Expo Router brings file-based routing to React Native with deep linking, typed routes, and universal app support.

File-Based Routes 

app/
  index.tsx         # /
  about.tsx         # /about
  posts/[id].tsx    # /posts/123
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Dynamic Routes 

import { useLocalSearchParams } from "expo-router";

export default function Post() {
  const { id } = useLocalSearchParams<{ id: string }>();
  return <Text>Post: {id}</Text>;
}
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Navigation 

import { Link, router } from "expo-router";
<Link href="/posts/123">View</Link>
router.push("/posts/123");
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API Routes 

// app/api/hello+api.ts
export function GET() {
  return Response.json({ message: "Hello" });
}
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Key Features

  • File-based routing for React Native
  • Universal (iOS, Android, Web)
  • Type-safe navigation
  • API routes for server logic

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