fix: export createAnonymousContext define (#5388)

<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->

## Summary by CodeRabbit

- **New Features**
- Enabled dynamic reading and updating of the response status via the
context interface.
- Consolidated asynchronous execution by introducing a unified method
for running operations within a controlled context.

- **Tests**
- Strengthened type validations to ensure consistent and reliable
context management.

<!-- end of auto-generated comment: release notes by coderabbit.ai -->

src/app/extend/context.ts

@@ -318,5 +318,7 @@ declare module '@eggjs/core' {
     get logger(): EggLogger;
     get coreLogger(): EggLogger;
     get locals(): Record<string, any>;
+    get realStatus(): number;
+    set realStatus(val: number);
   }
 }

src/lib/application.ts

@@ -233,22 +233,6 @@ export class Application extends EggApplicationCore {
     });
   }
 
-  /**
-   * Run async function in the anonymous context scope
-   * @see Context#runInAnonymousContextScope
-   * @param {Function} scope - the first args is an anonymous ctx, scope should be async function
-   * @param {Request} [req] - if you want to mock request like querystring, you can pass an object to this function.
-   */
-  async runInAnonymousContextScope(scope: (ctx: Context) => Promise<void>, req?: unknown) {
-    const ctx = this.createAnonymousContext(req);
-    if (!scope.name) {
-      Reflect.set(scope, '_name', eggUtils.getCalleeFromStack(true));
-    }
-    return await this.ctxStorage.run(ctx, async () => {
-      return await scope(ctx);
-    });
-  }
-
   /**
    * secret key for Application
    * @member {String} Application#keys

src/lib/egg.ts

@@ -15,6 +15,7 @@ import type {
   Next, MiddlewareFunc as EggCoreMiddlewareFunc,
   ILifecycleBoot,
 } from '@eggjs/core';
+import { utils as eggUtils } from '@eggjs/core';
 // eslint-disable-next-line @typescript-eslint/ban-ts-comment
 // @ts-ignore
 import createClusterClient, { close as closeClusterClient } from 'cluster-client';
@@ -641,6 +642,22 @@ export class EggApplicationCore extends EggCore {
     return this.createContext(request, response);
   }
 
+  /**
+   * Run async function in the anonymous context scope
+   * @see Context#runInAnonymousContextScope
+   * @param {Function} scope - the first args is an anonymous ctx, scope should be async function
+   * @param {Request} [req] - if you want to mock request like querystring, you can pass an object to this function.
+   */
+  async runInAnonymousContextScope(scope: (ctx: Context) => Promise<void>, req?: unknown) {
+    const ctx = this.createAnonymousContext(req);
+    if (!scope.name) {
+      Reflect.set(scope, '_name', eggUtils.getCalleeFromStack(true));
+    }
+    return await this.ctxStorage.run(ctx, async () => {
+      return await scope(ctx);
+    });
+  }
+
   /**
    * Create egg context
    * @function EggApplication#createContext
@@ -677,5 +694,7 @@ declare module '@eggjs/core' {
     HttpClient: typeof HttpClient;
     get httpClient(): HttpClient;
     curl<T = any>(url: HttpClientRequestURL, options?: HttpClientRequestOptions): Promise<HttpClientResponse<T>>;
+    createAnonymousContext(req?: any): EggContext;
+    runInAnonymousContextScope(scope: (ctx: Context) => Promise<void>, req?: unknown): Promise<void>;
   }
 }

test/index.test-d.ts

@@ -1,6 +1,7 @@
 import { expectType } from 'tsd';
+import { EggCore, Context } from '@eggjs/core';
 import {
-  Context, Application, IBoot, ILifecycleBoot,
+  Application, IBoot, ILifecycleBoot,
   LoggerLevel,
   EggPlugin,
   EggAppInfo,
@@ -10,7 +11,7 @@ import {
 } from '../src/index.js';
 import { HttpClient } from '../src/urllib.js';
 
-const app = {} as Application;
+const app = {} as EggCore;
 const ctx = app.createAnonymousContext();
 
 expectType<Promise<void>>(app.runInAnonymousContextScope(async ctx => {
@@ -20,6 +21,8 @@ expectType<Promise<void>>(app.runInAnonymousContextScope(async ctx => {
 expectType<Context>(ctx);
 expectType<HttpClient>(ctx.httpClient);
 expectType<any>(ctx.request.body);
+expectType<number>(ctx.realStatus);
+expectType<number>(ctx.realStatus = 200);
 
 // watcher plugin types
 expectType<object>(app.watcher);