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Deduplicate HTTP-related Zod schemas into shared/http.zod.ts
Co-authored-by: hotlong <50353452+hotlong@users.noreply.github.com>
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‎SCHEMA_DEDUPLICATION_SUMMARY.md‎

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# Schema Deduplication - Changes Summary
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## Issue
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@hotlong requested evaluation of whether the new HTTP server and REST API Zod schemas duplicate existing definitions in `spec/api`.
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## Analysis Results
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### Identified Duplications
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1. **CORS Configuration**
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- Found in: `api/router.zod.ts` and `system/http-server.zod.ts`
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- Issue: Similar structure with minor differences (field names: "origin" vs "origins", "dir" vs "directory")
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2. **Rate Limiting**
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- Found in: `api/endpoint.zod.ts` and `system/http-server.zod.ts`
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- Issue: Nearly identical schema, one exported, one inline
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3. **Static File Serving**
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- Found in: `api/router.zod.ts` and `system/http-server.zod.ts`
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- Issue: Same structure with field name differences
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### Resolution
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Created a new shared schema file to consolidate duplicated HTTP-related schemas:
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**New File:** `packages/spec/src/shared/http.zod.ts`
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This file now contains:
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- `CorsConfigSchema` - Unified CORS configuration
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- `RateLimitConfigSchema` - Unified rate limiting configuration
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- `StaticMountSchema` - Unified static file serving configuration
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### Files Modified
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1. **`packages/spec/src/shared/http.zod.ts`** (NEW)
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- Created new shared HTTP schemas
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- Comprehensive JSDoc documentation
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- Examples for each schema
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2. **`packages/spec/src/shared/index.ts`**
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- Added export for `http.zod.ts`
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3. **`packages/spec/src/system/http-server.zod.ts`**
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- Removed inline CORS, rate limit, and static schemas
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- Now imports from `shared/http.zod.ts`
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- Standardized field names: "origins" and "directory"
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4. **`packages/spec/src/api/router.zod.ts`**
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- Removed inline CORS and static mount schemas
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- Now imports from `shared/http.zod.ts`
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- Standardized field names to match shared schemas
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5. **`packages/spec/src/api/endpoint.zod.ts`**
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- Deprecated local `RateLimitSchema`
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- Now re-exports from `shared/http.zod.ts` for backward compatibility
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## Benefits
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1. ✅ **Eliminated Duplication** - Single source of truth for common HTTP schemas
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2. ✅ **Consistency** - Standardized field names across all uses
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3. ✅ **Maintainability** - Changes to HTTP schemas now only need to be made in one place
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4. ✅ **Documentation** - Centralized documentation for shared schemas
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5. ✅ **Backward Compatibility** - Old `RateLimitSchema` still available (deprecated)
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## Breaking Changes
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### Field Name Changes (Minor)
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**CORS Configuration:**
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- `origin` → `origins` (more semantically correct for multiple origins)
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**Static Mounts:**
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- `dir` → `directory` (more explicit and clear)
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These changes standardize the naming convention and improve clarity. If there are existing implementations depending on the old field names, they should be updated to use the new names.
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## Migration Guide
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### For CORS Configuration
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```typescript
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// Before (router.zod.ts)
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cors: {
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origin: 'http://localhost:3000'
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}
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// After (shared/http.zod.ts)
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cors: {
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origins: 'http://localhost:3000' // Note: 'origins' instead of 'origin'
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}
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```
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### For Static Mounts
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```typescript
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// Before (router.zod.ts)
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staticMounts: [{
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path: '/static',
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dir: './public'
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}]
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// After (shared/http.zod.ts)
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staticMounts: [{
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path: '/static',
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directory: './public' // Note: 'directory' instead of 'dir'
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}]
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```
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### For Rate Limiting
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```typescript
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// Before (endpoint.zod.ts or http-server.zod.ts)
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import { RateLimitSchema } from './endpoint.zod';
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// After (shared/http.zod.ts)
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import { RateLimitConfigSchema } from '../shared/http.zod';
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// Or continue using RateLimitSchema (deprecated) from endpoint.zod.ts
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```
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## Next Steps
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1. Update any existing code that uses `origin` to use `origins`
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2. Update any existing code that uses `dir` to use `directory`
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3. Consider adding migration guide to CHANGELOG.md
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4. Run tests to ensure no breaking changes in actual usage
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## Notes
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- The `HttpMethod` enum was already being imported from `router.zod.ts` in the new files (no duplication)
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- All changes follow the Zod-first architecture pattern
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- Maintained backward compatibility where possible

‎packages/spec/src/api/endpoint.zod.ts‎

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import { z } from 'zod';
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import { HttpMethod } from './router.zod';
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import { RateLimitConfigSchema } from '../shared/http.zod';
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/**
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* Rate Limit Strategy
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* @deprecated Use RateLimitConfigSchema from shared/http.zod.ts instead
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*/
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export const RateLimitSchema = z.object({
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enabled: z.boolean().default(false),
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windowMs: z.number().default(60000).describe('Time window in milliseconds'),
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maxRequests: z.number().default(100).describe('Max requests per window'),
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});
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export const RateLimitSchema = RateLimitConfigSchema;
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/**
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* API Mapping Schema

‎packages/spec/src/api/router.zod.ts‎

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import { z } from 'zod';
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import { CorsConfigSchema, StaticMountSchema } from '../shared/http.zod';
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/**
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* HTTP Method Enum
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/**
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* Cross-Origin Resource Sharing
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*/
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cors: z.object({
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enabled: z.boolean().default(true),
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origin: z.union([z.string(), z.array(z.string())]).default('*'),
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methods: z.array(HttpMethod).optional(),
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}).optional(),
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cors: CorsConfigSchema.optional(),
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/**
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* Static asset mounts
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*/
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staticMounts: z.array(z.object({
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path: z.string().describe('URL mount path'),
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dir: z.string().describe('Physical directory path'),
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cacheControl: z.string().optional()
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})).optional(),
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staticMounts: z.array(StaticMountSchema).optional(),
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});
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export type RouterConfig = z.infer<typeof RouterConfigSchema>;

‎packages/spec/src/shared/http.zod.ts‎

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import { z } from 'zod';
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import { HttpMethod } from '../api/router.zod';
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/**
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* Shared HTTP Schemas
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*
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* Common HTTP-related schemas used across API and System protocols.
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* These schemas ensure consistency across different parts of the stack.
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*/
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// ==========================================
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// CORS Configuration
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// ==========================================
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/**
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* CORS Configuration Schema
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* Cross-Origin Resource Sharing configuration
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*
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* Used by:
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* - api/router.zod.ts (RouterConfigSchema)
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* - system/http-server.zod.ts (HttpServerConfigSchema)
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*
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* @example
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* {
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* "enabled": true,
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* "origins": ["http://localhost:3000", "https://app.example.com"],
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* "methods": ["GET", "POST", "PUT", "DELETE"],
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* "credentials": true,
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* "maxAge": 86400
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* }
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*/
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export const CorsConfigSchema = z.object({
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/**
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* Enable CORS
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*/
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enabled: z.boolean().default(true).describe('Enable CORS'),
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/**
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* Allowed origins (* for all)
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*/
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origins: z.union([
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z.string(),
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z.array(z.string())
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]).default('*').describe('Allowed origins (* for all)'),
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/**
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* Allowed HTTP methods
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*/
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methods: z.array(HttpMethod).optional().describe('Allowed HTTP methods'),
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/**
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* Allow credentials (cookies, authorization headers)
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*/
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credentials: z.boolean().default(false).describe('Allow credentials (cookies, authorization headers)'),
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/**
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* Preflight cache duration in seconds
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*/
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maxAge: z.number().int().optional().describe('Preflight cache duration in seconds'),
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});
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export type CorsConfig = z.infer<typeof CorsConfigSchema>;
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// ==========================================
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// Rate Limiting
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// ==========================================
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/**
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* Rate Limit Configuration Schema
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*
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* Used by:
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* - api/endpoint.zod.ts (ApiEndpointSchema)
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* - system/http-server.zod.ts (HttpServerConfigSchema)
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*
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* @example
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* {
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* "enabled": true,
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* "windowMs": 60000,
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* "maxRequests": 100
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* }
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*/
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export const RateLimitConfigSchema = z.object({
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/**
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* Enable rate limiting
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*/
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enabled: z.boolean().default(false).describe('Enable rate limiting'),
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/**
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* Time window in milliseconds
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*/
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windowMs: z.number().int().default(60000).describe('Time window in milliseconds'),
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/**
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* Max requests per window
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*/
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maxRequests: z.number().int().default(100).describe('Max requests per window'),
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});
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export type RateLimitConfig = z.infer<typeof RateLimitConfigSchema>;
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// ==========================================
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// Static File Serving
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// ==========================================
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/**
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* Static Mount Configuration Schema
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* Configuration for serving static files
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*
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* Used by:
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* - api/router.zod.ts (RouterConfigSchema)
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* - system/http-server.zod.ts (HttpServerConfigSchema)
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*
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* @example
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* {
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* "path": "/static",
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* "directory": "./public",
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* "cacheControl": "public, max-age=31536000"
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* }
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*/
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export const StaticMountSchema = z.object({
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/**
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* URL path to serve from
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*/
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path: z.string().describe('URL path to serve from'),
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/**
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* Physical directory to serve
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*/
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directory: z.string().describe('Physical directory to serve'),
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/**
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* Cache-Control header value
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*/
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cacheControl: z.string().optional().describe('Cache-Control header value'),
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});
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export type StaticMount = z.infer<typeof StaticMountSchema>;

‎packages/spec/src/shared/index.ts‎

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export * from './identifiers.zod';
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export * from './mapping.zod';
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export * from './http.zod';

‎packages/spec/src/system/http-server.zod.ts‎

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import { z } from 'zod';
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import { HttpMethod } from '../api/router.zod';
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import { CorsConfigSchema, RateLimitConfigSchema, StaticMountSchema } from '../shared/http.zod';
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/**
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* HTTP Server Protocol
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/**
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* CORS configuration
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*/
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cors: z.object({
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enabled: z.boolean().default(true).describe('Enable CORS'),
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origins: z.union([
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z.string(),
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z.array(z.string())
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]).default('*').describe('Allowed origins (* for all)'),
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methods: z.array(HttpMethod).optional().describe('Allowed HTTP methods'),
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credentials: z.boolean().default(false).describe('Allow credentials (cookies, authorization headers)'),
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maxAge: z.number().int().optional().describe('Preflight cache duration in seconds'),
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}).optional().describe('CORS configuration'),
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cors: CorsConfigSchema.optional().describe('CORS configuration'),
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/**
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* Request handling options
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*/
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security: z.object({
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helmet: z.boolean().default(true).describe('Enable security headers via helmet'),
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rateLimit: z.object({
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enabled: z.boolean().default(true).describe('Enable rate limiting'),
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windowMs: z.number().int().default(60000).describe('Time window in milliseconds'),
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maxRequests: z.number().int().default(100).describe('Max requests per window per IP'),
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}).optional(),
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rateLimit: RateLimitConfigSchema.optional().describe('Global rate limiting configuration'),
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}).optional().describe('Security configuration'),
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/**
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* Static file serving
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*/
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static: z.array(z.object({
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path: z.string().describe('URL path to serve from'),
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directory: z.string().describe('Physical directory to serve'),
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cacheControl: z.string().optional().describe('Cache-Control header value'),
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})).optional().describe('Static file serving configuration'),
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static: z.array(StaticMountSchema).optional().describe('Static file serving configuration'),
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/**
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* Trust proxy settings

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