BREAKING CHANGE(request): introduce lazy request body parsing via ctx.json()/text()/arrayBuffer()/formData and remove IRequestContext.body

ts/openapi/openapi.validator.ts

@@ -116,15 +116,15 @@ export function createValidationErrorResponse(
  * Validate the full request based on OpenAPI metadata
  * Returns a Response if validation fails, undefined if valid
  */
-export function validateRequest(
+export async function validateRequest(
   ctx: IRequestContext,
   openapi: IOpenApiRouteMeta
-): {
+): Promise<{
   valid: boolean;
   response?: Response;
   coercedParams?: Record<string, unknown>;
   coercedQuery?: Record<string, unknown>;
-} {
+}> {
   const allErrors: Array<{ errors: IValidationError[]; source: string }> = [];
 
   // Coerce and validate path parameters
@@ -164,10 +164,16 @@ export function validateRequest(
     }
   }
 
-  // Validate request body
+  // Validate request body (lazy parsing via ctx.json())
   if (openapi.requestBody) {
     const required = openapi.requestBody.required !== false;
-    const body = ctx.body;
+    let body: unknown;
+
+    try {
+      body = await ctx.json();
+    } catch {
+      body = undefined;
+    }
 
     if (required && (body === undefined || body === null)) {
       allErrors.push({
@@ -210,7 +216,7 @@ export function validateRequest(
  */
 export function createValidationInterceptor(openapi: IOpenApiRouteMeta) {
   return async (ctx: IRequestContext): Promise<IRequestContext | Response | void> => {
-    const result = validateRequest(ctx, openapi);
+    const result = await validateRequest(ctx, openapi);
 
     if (!result.valid && result.response) {
       return result.response;