vercel-sdk-patterns

# Vercel SDK Patterns ## Overview Build a typed, production-ready wrapper around the Vercel REST API (`api.vercel.com`). Covers authentication, pagination, error handling, retry logic, and common endpoint patterns for deployments, projects, and environment variables. ## Prerequisites - Completed `vercel-install-auth` setup - TypeScript project with `strict` mode enabled - Vercel access token with appropriate scope ## Instructions ### Step 1: Create Typed API Client ```typescript // lib/vercel-client.ts interface VercelClientConfig { token: string; teamId?: string; baseUrl?: string; } interface VercelError { error: { code: string; message: string }; } class VercelClient { private token: string; private teamId?: string; private baseUrl: string; constructor(config: VercelClientConfig) { this.token = config.token; this.teamId = config.teamId; this.baseUrl = config.baseUrl ?? 'https://api.vercel.com'; } private async request<T>( method: string, path: string, body?: unknown ): Promise<T> { const url = new URL(path, this.baseUrl); if (this.teamId) url.searchParams.set('teamId', this.teamId); const res = await fetch(url.toString(), { method, headers: { Authorization: `Bearer ${this.token}`, 'Content-Type': 'application/json', }, body: body ? JSON.stringify(body) : undefined, }); if (!res.ok) { const err: VercelError = await res.json(); throw new VercelApiErr...