cloudflare-workers-dev-experience

# Cloudflare Workers Developer Experience Local development setup with Wrangler, Miniflare, and modern tooling. ## Quick Start ```bash # Create new project bunx create-cloudflare@latest my-worker # Or from scratch mkdir my-worker && cd my-worker bun init -y bun add -d wrangler @cloudflare/workers-types # Start local development bunx wrangler dev ``` ## Essential wrangler.jsonc ```jsonc { "$schema": "node_modules/wrangler/config-schema.json", "name": "my-worker", "main": "src/index.ts", "compatibility_date": "2024-12-01", // Development settings "dev": { "port": 8787, "local_protocol": "http" }, // Environment variables (non-secret) "vars": { "ENVIRONMENT": "development" }, // Bindings "kv_namespaces": [ { "binding": "KV", "id": "abc123", "preview_id": "def456" } ], "d1_databases": [ { "binding": "DB", "database_id": "xyz789", "database_name": "my-db" } ], "r2_buckets": [ { "binding": "BUCKET", "bucket_name": "my-bucket" } ] } ``` ## Critical Rules 1. **Always use `wrangler dev` for local testing** - Simulates Cloudflare runtime accurately 2. **Set `compatibility_date`** - Controls runtime behavior, update quarterly 3. **Use preview IDs for local dev** - Separate from production bindings 4. **Configure TypeScript properly** - Use `@cloudflare/workers-types` 5. **Enable source maps** - Better error stacks in development ## Top 6 Errors Prevented | Error | Symptom | Prevention | |-------|---------|--------...