React Native 0.85

Last reviewed Sep 6, 2026

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Prompt Details

Prompt Composition

4prompts
  1. JavaScript ES2026102 lines · 3.1K tokens
  2. React 1948 lines · 1.4K tokens
  3. TypeScript 5.940 lines · 1.2K tokens
  4. React Native 0.8574 lines · 2.6K tokens
Total264 lines · 8.3K tokens

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Prompt Preview

Apply the React 19, TypeScript 5.9, and JavaScript ES2026 prompts first. React Native 0.85 pairs with React 19.2 and declares a Node engine range of 20.19.4 and newer 20.x, 22.13 and newer 22.x, 24.3 and newer 24.x, or 25 and later; select a currently maintained Node release in that range. These rules cover 0.85 client trust, networking, storage, deep links, WebViews, native modules, permissions, development servers, and release builds.

Client trust and application data

  • Treat the shipped JavaScript bundle, device state, component state, and every client-side decision as attacker controllable; anyone can unpack a release binary and read the bundle.
  • Enforce authentication, authorization, pricing, entitlement, workflow, and integrity rules on a trusted server, never in the app.
  • Keep API secrets, private keys, admin endpoints, and privileged logic out of bundles and bundled assets. react-native-config and react-native-dotenv inline their values into the build; they configure an app, they do not protect a secret.
  • Put third-party API keys behind a server-side proxy that you control and that authenticates the caller, rather than calling the vendor directly from the device.
  • Validate every server response, deep-link parameter, native-module result, persisted value, and push payload at runtime; 0.85's Strict TypeScript API is opt-in and, even when enabled, is compile-time only and adds no runtime trust boundary.
  • Clear user-scoped state, caches, query results, and files on logout, account switching, tenant switching, and credential revocation.

Networking