A comprehensive set of four self-contained example applications demonstrating the Sphere Connect protocol for integrating dApps with the Sphere wallet. The examples cover a browser dApp (React/Vite), a Node.js CLI dApp over WebSocket, an autonomous bot that runs its own wallet (direct SDK, no Connect), and a backend-auth flow where a frontend brokers a wallet signature and a backend verifies it cryptographically to issue a JWT. The codebase is a multi-package monorepo, each package pinned to the same SDK version (0.14.2), with extensive test coverage, CI/CD, and detailed documentation. The overall architecture is clean and well-structured, exhibiting high engineering craftsmanship in areas like money-safety (duck-typed detection of possibly-committed sends), exact string-based unit conversion, and byte-exact challenge reconstruction for signature verification.
SushiSwap 2.0 is a multi-chain decentralized exchange (DEX) frontend built as a monorepo (pnpm, Turborepo) with Next.js App Router, React, and a shared UI library. It provides swap (simple, limit, DCA, TWAP), cross-chain swap (via LI.FI and Near Intents), perpetual futures (Hyperliquid-based), liquidity pools (V2/V3/Blade/Steer vaults), a token launchpad, staking (xSUSHI), and a developer portal (Zitadel auth, team management, API keys). The codebase supports EVM, SVM (Solana), Stellar, and Aptos chains, with namespace-aware wallet providers (Wagmi, Privy, Stellar Wallets Kit) and unified data fetching via TanStack Query and a custom GraphQL client. The architecture is heavily componentized, with reusable patterns like the Checker system (guards for connect/network/amounts), Provider composition (balance, price, trade state), and a design system in packages/ui. Testing includes Vitest unit tests and Playwright e2e with Anvil forks. The repo is actively maintained but carries moderate technical drift due to multi-chain duplication, hardcoded external API endpoints, and deprecated features (Blade pools, Arbitrum Nova minimization).