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

ts/core/smartserve.interfaces.ts

@@ -24,10 +24,8 @@ export type TRuntime = 'node' | 'deno' | 'bun';
  * Wraps Web Standard Request with additional utilities
  */
 export interface IRequestContext<TBody = unknown> {
-  /** Original Web Standards Request */
+  /** Original Web Standards Request - body stream is never consumed by framework */
   readonly request: Request;
-  /** Parsed request body (typed) */
-  readonly body: TBody;
   /** URL path parameters extracted from route */
   readonly params: Record<string, string>;
   /** URL query parameters */
@@ -44,6 +42,34 @@ export interface IRequestContext<TBody = unknown> {
   readonly runtime: TRuntime;
   /** Route-specific state bag for passing data between interceptors */
   state: Record<string, unknown>;
+
+  /**
+   * Lazily parse request body as JSON.
+   * Result is cached after first call.
+   * @returns Typed body parsed from JSON
+   */
+  json(): Promise<TBody>;
+
+  /**
+   * Lazily parse request body as text.
+   * Result is cached after first call.
+   * @returns Body as string
+   */
+  text(): Promise<string>;
+
+  /**
+   * Lazily parse request body as ArrayBuffer.
+   * Result is cached after first call.
+   * @returns Body as ArrayBuffer
+   */
+  arrayBuffer(): Promise<ArrayBuffer>;
+
+  /**
+   * Lazily parse request body as FormData.
+   * Result is cached after first call.
+   * @returns Body as FormData
+   */
+  formData(): Promise<FormData>;
 }
 
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