feature(@nestjs/core) expose container to ModuleRef, add close() to NestContext

package.json

@@ -137,6 +137,7 @@
       "packages/microservices/exceptions/",
       "packages/microservices/microservices-module.ts",
       "packages/core/middleware/middleware-module.ts",
+      "packages/core/injector/module-ref.ts",
       "packages/common/services/logger.service.ts"
     ],
     "extension": [

packages/common/interfaces/nest-application-context.interface.ts

@@ -1,5 +1,4 @@
 import { Type } from './type.interface';
-import { LoggerService } from '../services/logger.service';
 
 export interface INestApplicationContext {
   /**
@@ -10,10 +9,17 @@ export interface INestApplicationContext {
 
   /**
    * Retrieves an instance of either injectable or controller available anywhere, otherwise, throws exception.
-   * @returns {T}
+   * @returns {TResult}
    */
-  get<T>(
-    typeOrToken: Type<T> | string | symbol,
+  get<TInput = any, TResult = TInput>(
+    typeOrToken: Type<TInput> | string | symbol,
     options?: { strict: boolean },
-  ): T;
+  ): TResult;
+
+  /**
+   * Terminates the application
+   *
+   * @returns {Promise<void>}
+   */
+  close(): Promise<void>;
 }

packages/core/exceptions/base-exception-filter-context.ts

@@ -1,11 +1,11 @@
 import { FILTER_CATCH_EXCEPTIONS } from '@nestjs/common/constants';
+import { Type } from '@nestjs/common/interfaces';
 import { ExceptionFilter } from '@nestjs/common/interfaces/exceptions/exception-filter.interface';
-import { Type } from '@nestjs/common/interfaces/index';
 import { isEmpty, isFunction, isUndefined } from '@nestjs/common/utils/shared.utils';
 import iterate from 'iterare';
 import 'reflect-metadata';
+import { ContextCreator } from '../helpers/context-creator';
 import { NestContainer } from '../injector/container';
-import { ContextCreator } from './../helpers/context-creator';
 
 export class BaseExceptionFilterContext extends ContextCreator {
   protected moduleContext: string;

packages/core/guards/guards-context-creator.ts

@@ -1,17 +1,12 @@
-import 'reflect-metadata';
-import iterate from 'iterare';
-import { Controller } from '@nestjs/common/interfaces';
-import { GUARDS_METADATA } from '@nestjs/common/constants';
-import {
-  isUndefined,
-  isFunction,
-  isNil,
-  isEmpty,
-} from '@nestjs/common/utils/shared.utils';
-import { ContextCreator } from './../helpers/context-creator';
-import { NestContainer } from '../injector/container';
 import { CanActivate } from '@nestjs/common';
+import { GUARDS_METADATA } from '@nestjs/common/constants';
+import { Controller } from '@nestjs/common/interfaces';
 import { ConfigurationProvider } from '@nestjs/common/interfaces/configuration-provider.interface';
+import { isEmpty, isFunction, isUndefined } from '@nestjs/common/utils/shared.utils';
+import iterate from 'iterare';
+import 'reflect-metadata';
+import { ContextCreator } from '../helpers/context-creator';
+import { NestContainer } from '../injector/container';
 
 export class GuardsContextCreator extends ContextCreator {
   private moduleContext: string;

packages/core/helpers/context-creator.ts

@@ -1,8 +1,5 @@
-import 'reflect-metadata';
-import iterate from 'iterare';
 import { Controller } from '@nestjs/common/interfaces';
-import { isUndefined, isFunction } from '@nestjs/common/utils/shared.utils';
-import { ApplicationConfig } from './../application-config';
+import 'reflect-metadata';
 
 export abstract class ContextCreator {
   public abstract createConcreteContext<T extends any[], R extends any[]>(

packages/core/helpers/external-context-creator.ts

@@ -1,13 +1,13 @@
-import 'reflect-metadata';
-import { GuardsContextCreator } from './../guards/guards-context-creator';
-import { GuardsConsumer } from './../guards/guards-consumer';
-import { InterceptorsContextCreator } from './../interceptors/interceptors-context-creator';
-import { InterceptorsConsumer } from './../interceptors/interceptors-consumer';
-import { Controller } from '@nestjs/common/interfaces';
-import { FORBIDDEN_MESSAGE } from '../guards/constants';
 import { ForbiddenException } from '@nestjs/common';
-import { Module } from './../injector/module';
-import { ModulesContainer } from './../injector/modules-container';
+import { Controller } from '@nestjs/common/interfaces';
+import 'reflect-metadata';
+import { FORBIDDEN_MESSAGE } from '../guards/constants';
+import { GuardsConsumer } from '../guards/guards-consumer';
+import { GuardsContextCreator } from '../guards/guards-context-creator';
+import { Module } from '../injector/module';
+import { ModulesContainer } from '../injector/modules-container';
+import { InterceptorsConsumer } from '../interceptors/interceptors-consumer';
+import { InterceptorsContextCreator } from '../interceptors/interceptors-context-creator';
 
 export class ExternalContextCreator {
   constructor(

packages/core/injector/container.ts

@@ -2,9 +2,9 @@ import { DynamicModule } from '@nestjs/common';
 import { GLOBAL_MODULE_METADATA } from '@nestjs/common/constants';
 import { Type } from '@nestjs/common/interfaces/type.interface';
 import 'reflect-metadata';
+import { ApplicationConfig } from '../application-config';
+import { InvalidModuleException } from '../errors/exceptions/invalid-module.exception';
 import { UnknownModuleException } from '../errors/exceptions/unknown-module.exception';
-import { ApplicationConfig } from './../application-config';
-import { InvalidModuleException } from './../errors/exceptions/invalid-module.exception';
 import { ModuleCompiler } from './compiler';
 import { Module } from './module';
 import { ModulesContainer } from './modules-container';

packages/core/injector/injector.ts

@@ -5,9 +5,9 @@ import { Type } from '@nestjs/common/interfaces/type.interface';
 import { isFunction, isNil, isUndefined } from '@nestjs/common/utils/shared.utils';
 import 'reflect-metadata';
 import { RuntimeException } from '../errors/exceptions/runtime.exception';
+import { UndefinedDependencyException } from '../errors/exceptions/undefined-dependency.exception';
 import { UnknownDependenciesException } from '../errors/exceptions/unknown-dependencies.exception';
 import { MiddlewareWrapper } from '../middleware/container';
-import { UndefinedDependencyException } from './../errors/exceptions/undefined-dependency.exception';
 import { InstanceWrapper } from './container';
 import { Module } from './module';
 

packages/core/injector/module-ref.ts

@@ -1,5 +1,65 @@
-import { OpaqueToken } from './module';
+import { Type } from '@nestjs/common';
+import { isFunction } from '@nestjs/common/utils/shared.utils';
+import { UnknownElementException } from '../errors/exceptions/unknown-element.exception';
+import { InstanceWrapper, NestContainer } from './container';
+import { Module } from './module';
 
 export abstract class ModuleRef {
-  public abstract get<T>(type: OpaqueToken): T;
+  private flattenModuleFixture: Partial<Module>;
+
+  constructor(protected readonly container: NestContainer) {}
+
+  public abstract get<TInput = any, TResult = TInput>(
+    typeOrToken: Type<TInput> | string | symbol,
+    options?: { strict: boolean },
+  ): TResult;
+
+  protected find<TInput = any, TResult = TInput>(
+    typeOrToken: Type<TInput> | string | symbol,
+  ): TResult {
+    this.initFlattenModule();
+    return this.findInstanceByPrototypeOrToken<TInput, TResult>(
+      typeOrToken,
+      this.flattenModuleFixture,
+    );
+  }
+
+  protected findInstanceByPrototypeOrToken<TInput = any, TResult = TInput>(
+    metatypeOrToken: Type<TInput> | string | symbol,
+    contextModule: Partial<Module>,
+  ): TResult {
+    const dependencies = new Map([
+      ...contextModule.components,
+      ...contextModule.routes,
+      ...contextModule.injectables,
+    ]);
+    const name = isFunction(metatypeOrToken)
+      ? (metatypeOrToken as any).name
+      : metatypeOrToken;
+    const instanceWrapper = dependencies.get(name);
+    if (!instanceWrapper) {
+      throw new UnknownElementException();
+    }
+    return (instanceWrapper as InstanceWrapper<any>).instance;
+  }
+
+  private initFlattenModule() {
+    if (this.flattenModuleFixture) {
+      return void 0;
+    }
+    const modules = this.container.getModules();
+    const initialValue = {
+      components: [],
+      routes: [],
+      injectables: [],
+    };
+    this.flattenModuleFixture = [...modules.values()].reduce(
+      (flatten, curr) => ({
+        components: [...flatten.components, ...curr.components],
+        routes: [...flatten.routes, ...curr.routes],
+        injectables: [...flatten.injectables, ...curr.injectables],
+      }),
+      initialValue,
+    ) as any;
+  }
 }

packages/core/injector/module.ts

@@ -3,12 +3,12 @@ import { Type } from '@nestjs/common/interfaces/type.interface';
 import { isFunction, isNil, isString, isSymbol, isUndefined } from '@nestjs/common/utils/shared.utils';
 import { RuntimeException } from '../errors/exceptions/runtime.exception';
 import { UnknownExportException } from '../errors/exceptions/unknown-export.exception';
+import { GuardsConsumer } from '../guards/guards-consumer';
+import { GuardsContextCreator } from '../guards/guards-context-creator';
+import { ExternalContextCreator } from '../helpers/external-context-creator';
+import { InterceptorsConsumer } from '../interceptors/interceptors-consumer';
+import { InterceptorsContextCreator } from '../interceptors/interceptors-context-creator';
 import { Reflector } from '../services/reflector.service';
-import { GuardsConsumer } from './../guards/guards-consumer';
-import { GuardsContextCreator } from './../guards/guards-context-creator';
-import { ExternalContextCreator } from './../helpers/external-context-creator';
-import { InterceptorsConsumer } from './../interceptors/interceptors-consumer';
-import { InterceptorsContextCreator } from './../interceptors/interceptors-context-creator';
 import { InstanceWrapper, NestContainer } from './container';
 import { ModuleRef } from './module-ref';
 import { ModulesContainer } from './modules-container';
@@ -41,7 +41,7 @@ export class Module {
   constructor(
     private readonly _metatype: Type<any>,
     private readonly _scope: Type<any>[],
-    container: NestContainer,
+    private readonly container: NestContainer,
   ) {
     this.addCoreInjectables(container);
   }
@@ -92,7 +92,7 @@ export class Module {
   }
 
   public addModuleRef() {
-    const moduleRef = this.createModuleRefMetatype(this._components);
+    const moduleRef = this.createModuleRefMetatype();
     this._components.set(ModuleRef.name, {
       name: ModuleRef.name,
       metatype: ModuleRef as any,
@@ -324,15 +324,24 @@ export class Module {
     });
   }
 
-  public createModuleRefMetatype(components) {
-    return class {
-      public readonly components = components;
+  public createModuleRefMetatype(): any {
+    const self = this;
+    return class extends ModuleRef {
+      constructor() {
+        super(self.container);
+      }
 
-      public get<T>(type: OpaqueToken): T {
-        const name = isFunction(type) ? (type as Type<any>).name : type;
-        const exists = this.components.has(name);
-
-        return exists ? (this.components.get(name).instance as T) : null;
+      public get<TInput = any, TResult = TInput>(
+        typeOrToken: Type<TInput> | string | symbol,
+        options: { strict: boolean } = { strict: true },
+      ): TResult {
+        if (!(options && options.strict)) {
+          return this.find<TInput, TResult>(typeOrToken);
+        }
+        return this.findInstanceByPrototypeOrToken<TInput, TResult>(
+          typeOrToken,
+          self,
+        );
       }
     };
   }

packages/core/interceptors/interceptors-context-creator.ts

@@ -1,16 +1,11 @@
-import 'reflect-metadata';
-import iterate from 'iterare';
-import { Controller, NestInterceptor } from '@nestjs/common/interfaces';
 import { INTERCEPTORS_METADATA } from '@nestjs/common/constants';
-import {
-  isUndefined,
-  isFunction,
-  isNil,
-  isEmpty,
-} from '@nestjs/common/utils/shared.utils';
-import { ContextCreator } from './../helpers/context-creator';
-import { NestContainer } from '../injector/container';
+import { Controller, NestInterceptor } from '@nestjs/common/interfaces';
 import { ConfigurationProvider } from '@nestjs/common/interfaces/configuration-provider.interface';
+import { isEmpty, isFunction, isUndefined } from '@nestjs/common/utils/shared.utils';
+import iterate from 'iterare';
+import 'reflect-metadata';
+import { ContextCreator } from '../helpers/context-creator';
+import { NestContainer } from '../injector/container';
 
 export class InterceptorsContextCreator extends ContextCreator {
   private moduleContext: string;

packages/core/nest-application-context.ts

@@ -1,26 +1,28 @@
-import { INestApplicationContext, OnModuleInit } from '@nestjs/common';
-import { Type } from '@nestjs/common/interfaces/type.interface';
 import {
-  isFunction,
-  isNil,
-  isUndefined,
-} from '@nestjs/common/utils/shared.utils';
+  INestApplicationContext,
+  OnModuleDestroy,
+  OnModuleInit,
+} from '@nestjs/common';
+import { Type } from '@nestjs/common/interfaces/type.interface';
+import { isNil, isUndefined } from '@nestjs/common/utils/shared.utils';
 import iterate from 'iterare';
-import { UnknownElementException } from './errors/exceptions/unknown-element.exception';
 import { UnknownModuleException } from './errors/exceptions/unknown-module.exception';
-import { InstanceWrapper, NestContainer } from './injector/container';
+import { NestContainer } from './injector/container';
 import { Module } from './injector/module';
+import { ModuleRef } from './injector/module-ref';
 import { ModuleTokenFactory } from './injector/module-token-factory';
 
-export class NestApplicationContext implements INestApplicationContext {
+export class NestApplicationContext extends ModuleRef
+  implements INestApplicationContext {
   private readonly moduleTokenFactory = new ModuleTokenFactory();
-  private contextModuleFixture: Partial<Module>;
 
   constructor(
-    protected readonly container: NestContainer,
+    container: NestContainer,
     private readonly scope: Type<any>[],
     protected contextModule: Module,
-  ) {}
+  ) {
+    super(container);
+  }
 
   public selectContextModule() {
     const modules = this.container.getModules().values();
@@ -53,21 +55,15 @@ export class NestApplicationContext implements INestApplicationContext {
     );
   }
 
-  public find<TInput = any, TResult = TInput>(
-    typeOrToken: Type<TInput> | string | symbol,
-  ): TResult {
-    this.initFlattenModule();
-    return this.findInstanceByPrototypeOrToken<TInput, TResult>(
-      typeOrToken,
-      this.contextModuleFixture,
-    );
-  }
-
   public async init(): Promise<this> {
     await this.callInitHook();
     return this;
   }
 
+  public async close(): Promise<void> {
+    await this.callDestroyHook();
+  }
+
   protected async callInitHook(): Promise<any> {
     const modules = this.container.getModules();
     await Promise.all(
@@ -92,42 +88,30 @@ export class NestApplicationContext implements INestApplicationContext {
     return !isUndefined((instance as OnModuleInit).onModuleInit);
   }
 
-  private findInstanceByPrototypeOrToken<TInput = any, TResult = TInput>(
-    metatypeOrToken: Type<TInput> | string | symbol,
-    contextModule,
-  ): TResult {
-    const dependencies = new Map([
-      ...contextModule.components,
-      ...contextModule.routes,
-      ...contextModule.injectables,
-    ]);
-    const name = isFunction(metatypeOrToken)
-      ? (metatypeOrToken as any).name
-      : metatypeOrToken;
-    const instanceWrapper = dependencies.get(name);
-    if (!instanceWrapper) {
-      throw new UnknownElementException();
-    }
-    return (instanceWrapper as InstanceWrapper<any>).instance;
+  protected async callDestroyHook(): Promise<any> {
+    const modules = this.container.getModules();
+    await Promise.all(
+      iterate(modules.values()).map(
+        async module => await this.callModuleDestroyHook(module),
+      ),
+    );
   }
 
-  private initFlattenModule() {
-    if (this.contextModuleFixture) {
-      return undefined;
+  protected async callModuleDestroyHook(module: Module): Promise<any> {
+    const components = [...module.routes, ...module.components];
+    await Promise.all(
+      iterate(components)
+        .map(([key, { instance }]) => instance)
+        .filter(instance => !isNil(instance))
+        .filter(this.hasOnModuleDestroyHook)
+        .map(
+          async instance =>
+            await (instance as OnModuleDestroy).onModuleDestroy(),
+        ),
+    );
   }
-    const modules = this.container.getModules();
-    const initialValue = {
-      components: [],
-      routes: [],
-      injectables: [],
-    };
-    this.contextModuleFixture = [...modules.values()].reduce(
-      (flatten, curr) => ({
-        components: [...flatten.components, ...curr.components],
-        routes: [...flatten.routes, ...curr.routes],
-        injectables: [...flatten.injectables, ...curr.injectables],
-      }),
-      initialValue,
-    ) as any;
+
+  protected hasOnModuleDestroyHook(instance): instance is OnModuleDestroy {
+    return !isUndefined((instance as OnModuleDestroy).onModuleDestroy);
   }
 }

packages/core/nest-application.ts

@@ -4,7 +4,6 @@ import {
   INestApplication,
   INestMicroservice,
   NestInterceptor,
-  OnModuleDestroy,
   PipeTransform,
   WebSocketAdapter,
 } from '@nestjs/common';
@@ -19,9 +18,7 @@ import { Logger } from '@nestjs/common/services/logger.service';
 import { loadPackage } from '@nestjs/common/utils/load-package.util';
 import {
   isFunction,
-  isNil,
   isObject,
-  isUndefined,
   validatePath,
 } from '@nestjs/common/utils/shared.utils';
 import * as bodyParser from 'body-parser';
@@ -35,7 +32,6 @@ import { FastifyAdapter } from './adapters/fastify-adapter';
 import { ApplicationConfig } from './application-config';
 import { messages } from './constants';
 import { NestContainer } from './injector/container';
-import { Module } from './injector/module';
 import { MiddlewareContainer } from './middleware/container';
 import { MiddlewareModule } from './middleware/middleware-module';
 import { NestApplicationContext } from './nest-application-context';
@@ -308,7 +304,7 @@ export class NestApplication extends NestApplicationContext
         await microservice.close();
       }),
     );
-    await this.callDestroyHook();
+    await super.close();
   }
 
   public setGlobalPrefix(prefix: string): this {
@@ -387,31 +383,4 @@ export class NestApplication extends NestApplicationContext
       await microservice.listen(resolve);
     });
   }
-
-  private async callDestroyHook(): Promise<any> {
-    const modules = this.container.getModules();
-    await Promise.all(
-      iterate(modules.values()).map(
-        async module => await this.callModuleDestroyHook(module),
-      ),
-    );
-  }
-
-  private async callModuleDestroyHook(module: Module): Promise<any> {
-    const components = [...module.routes, ...module.components];
-    await Promise.all(
-      iterate(components)
-        .map(([key, { instance }]) => instance)
-        .filter(instance => !isNil(instance))
-        .filter(this.hasOnModuleDestroyHook)
-        .map(
-          async instance =>
-            await (instance as OnModuleDestroy).onModuleDestroy(),
-        ),
-    );
-  }
-
-  private hasOnModuleDestroyHook(instance): instance is OnModuleDestroy {
-    return !isUndefined((instance as OnModuleDestroy).onModuleDestroy);
-  }
 }

packages/core/pipes/pipes-consumer.ts

@@ -1,6 +1,5 @@
-import { Transform, Paramtype } from '@nestjs/common/interfaces';
-import { RouteParamtypes } from '@nestjs/common/enums/route-paramtypes.enum';
-import { ParamsTokenFactory } from './../pipes/params-token-factory';
+import { Transform } from '@nestjs/common/interfaces';
+import { ParamsTokenFactory } from './params-token-factory';
 
 export class PipesConsumer {
   private readonly paramsTokenFactory = new ParamsTokenFactory();

packages/core/pipes/pipes-context-creator.ts

@@ -1,18 +1,10 @@
-import 'reflect-metadata';
-import iterate from 'iterare';
-import {
-  Controller,
-  PipeTransform,
-  Transform,
-} from '@nestjs/common/interfaces';
 import { PIPES_METADATA } from '@nestjs/common/constants';
-import {
-  isUndefined,
-  isFunction,
-  isEmpty,
-} from '@nestjs/common/utils/shared.utils';
-import { ApplicationConfig } from './../application-config';
-import { ContextCreator } from './../helpers/context-creator';
+import { Controller, PipeTransform, Transform } from '@nestjs/common/interfaces';
+import { isEmpty, isFunction, isUndefined } from '@nestjs/common/utils/shared.utils';
+import iterate from 'iterare';
+import 'reflect-metadata';
+import { ApplicationConfig } from '../application-config';
+import { ContextCreator } from '../helpers/context-creator';
 import { NestContainer } from '../injector/container';
 
 export class PipesContextCreator extends ContextCreator {

packages/core/router/router-exception-filters.ts

@@ -3,11 +3,11 @@ import { EXCEPTION_FILTERS_METADATA } from '@nestjs/common/constants';
 import { Controller } from '@nestjs/common/interfaces/controllers/controller.interface';
 import { isEmpty } from '@nestjs/common/utils/shared.utils';
 import 'reflect-metadata';
+import { ApplicationConfig } from '../application-config';
 import { BaseExceptionFilterContext } from '../exceptions/base-exception-filter-context';
 import { ExceptionsHandler } from '../exceptions/exceptions-handler';
 import { NestContainer } from '../injector/container';
-import { ApplicationConfig } from './../application-config';
-import { RouterProxyCallback } from './../router/router-proxy';
+import { RouterProxyCallback } from './router-proxy';
 
 export class RouterExceptionFilters extends BaseExceptionFilterContext {
   constructor(

packages/core/router/router-execution-context.ts

@@ -1,39 +1,19 @@
-import 'reflect-metadata';
-import {
-  ROUTE_ARGS_METADATA,
-  PARAMTYPES_METADATA,
-  HTTP_CODE_METADATA,
-  CUSTOM_ROUTE_AGRS_METADATA,
-  RENDER_METADATA,
-  HEADERS_METADATA,
-} from '@nestjs/common/constants';
-import {
-  isUndefined,
-  isFunction,
-  isString,
-} from '@nestjs/common/utils/shared.utils';
+import { ForbiddenException, HttpServer, ParamData, PipeTransform, RequestMethod } from '@nestjs/common';
+import { CUSTOM_ROUTE_AGRS_METADATA, HEADERS_METADATA, HTTP_CODE_METADATA, PARAMTYPES_METADATA, RENDER_METADATA, ROUTE_ARGS_METADATA } from '@nestjs/common/constants';
+import { RouteParamsMetadata } from '@nestjs/common/decorators';
 import { RouteParamtypes } from '@nestjs/common/enums/route-paramtypes.enum';
 import { Controller, Transform } from '@nestjs/common/interfaces';
-import { RouteParamsMetadata } from '@nestjs/common/decorators';
-import { IRouteParamsFactory } from './interfaces/route-params-factory.interface';
-import { PipesContextCreator } from './../pipes/pipes-context-creator';
-import { PipesConsumer } from './../pipes/pipes-consumer';
-import {
-  ParamData,
-  PipeTransform,
-  RequestMethod,
-  ForbiddenException,
-  HttpServer,
-} from '@nestjs/common';
-import { GuardsContextCreator } from '../guards/guards-context-creator';
-import { GuardsConsumer } from '../guards/guards-consumer';
-import {
-  RouterResponseController,
-  CustomHeader,
-} from './router-response-controller';
-import { InterceptorsContextCreator } from '../interceptors/interceptors-context-creator';
-import { InterceptorsConsumer } from '../interceptors/interceptors-consumer';
+import { isFunction, isString, isUndefined } from '@nestjs/common/utils/shared.utils';
+import 'reflect-metadata';
 import { FORBIDDEN_MESSAGE } from '../guards/constants';
+import { GuardsConsumer } from '../guards/guards-consumer';
+import { GuardsContextCreator } from '../guards/guards-context-creator';
+import { InterceptorsConsumer } from '../interceptors/interceptors-consumer';
+import { InterceptorsContextCreator } from '../interceptors/interceptors-context-creator';
+import { PipesConsumer } from '../pipes/pipes-consumer';
+import { PipesContextCreator } from '../pipes/pipes-context-creator';
+import { IRouteParamsFactory } from './interfaces/route-params-factory.interface';
+import { CustomHeader, RouterResponseController } from './router-response-controller';
 
 export interface ParamProperties {
   index: number;

packages/core/router/router-explorer.ts

@@ -1,26 +1,26 @@
-import 'reflect-metadata';
-import { Controller } from '@nestjs/common/interfaces/controllers/controller.interface';
+import { METHOD_METADATA, PATH_METADATA } from '@nestjs/common/constants';
 import { RequestMethod } from '@nestjs/common/enums/request-method.enum';
-import { RouterProxy, RouterProxyCallback } from './router-proxy';
-import { UnknownRequestMappingException } from '../errors/exceptions/unknown-request-mapping.exception';
+import { Controller } from '@nestjs/common/interfaces/controllers/controller.interface';
 import { Type } from '@nestjs/common/interfaces/type.interface';
-import { isUndefined, validatePath } from '@nestjs/common/utils/shared.utils';
-import { RouterMethodFactory } from '../helpers/router-method-factory';
-import { PATH_METADATA, METHOD_METADATA } from '@nestjs/common/constants';
 import { Logger } from '@nestjs/common/services/logger.service';
+import { isUndefined, validatePath } from '@nestjs/common/utils/shared.utils';
+import 'reflect-metadata';
+import { ApplicationConfig } from '../application-config';
+import { UnknownRequestMappingException } from '../errors/exceptions/unknown-request-mapping.exception';
+import { GuardsConsumer } from '../guards/guards-consumer';
+import { GuardsContextCreator } from '../guards/guards-context-creator';
 import { routeMappedMessage } from '../helpers/messages';
-import { RouterExecutionContext } from './router-execution-context';
+import { RouterMethodFactory } from '../helpers/router-method-factory';
+import { NestContainer } from '../injector/container';
+import { InterceptorsConsumer } from '../interceptors/interceptors-consumer';
+import { InterceptorsContextCreator } from '../interceptors/interceptors-context-creator';
+import { MetadataScanner } from '../metadata-scanner';
+import { PipesConsumer } from '../pipes/pipes-consumer';
+import { PipesContextCreator } from '../pipes/pipes-context-creator';
 import { ExceptionsFilter } from './interfaces/exceptions-filter.interface';
 import { RouteParamsFactory } from './route-params-factory';
-import { MetadataScanner } from '../metadata-scanner';
-import { ApplicationConfig } from './../application-config';
-import { PipesContextCreator } from './../pipes/pipes-context-creator';
-import { PipesConsumer } from './../pipes/pipes-consumer';
-import { NestContainer } from '../injector/container';
-import { GuardsContextCreator } from '../guards/guards-context-creator';
-import { GuardsConsumer } from '../guards/guards-consumer';
-import { InterceptorsContextCreator } from '../interceptors/interceptors-context-creator';
-import { InterceptorsConsumer } from '../interceptors/interceptors-consumer';
+import { RouterExecutionContext } from './router-execution-context';
+import { RouterProxy, RouterProxyCallback } from './router-proxy';
 
 export class RouterExplorer {
   private readonly executionContextCreator: RouterExecutionContext;

packages/core/router/routes-resolver.ts

@@ -1,16 +1,16 @@
-import { NestContainer, InstanceWrapper } from '../injector/container';
-import { RouterProxy } from './router-proxy';
-import { Controller } from '@nestjs/common/interfaces/controllers/controller.interface';
-import { Logger } from '@nestjs/common/services/logger.service';
-import { controllerMappingMessage } from '../helpers/messages';
-import { Resolver } from './interfaces/resolver.interface';
-import { RouterExceptionFilters } from './router-exception-filters';
-import { MetadataScanner } from '../metadata-scanner';
-import { RouterExplorer } from './router-explorer';
-import { ApplicationConfig } from './../application-config';
-import { NotFoundException, BadRequestException } from '@nestjs/common';
+import { BadRequestException, NotFoundException } from '@nestjs/common';
 import { MODULE_PATH } from '@nestjs/common/constants';
 import { HttpServer } from '@nestjs/common/interfaces';
+import { Controller } from '@nestjs/common/interfaces/controllers/controller.interface';
+import { Logger } from '@nestjs/common/services/logger.service';
+import { ApplicationConfig } from '../application-config';
+import { controllerMappingMessage } from '../helpers/messages';
+import { InstanceWrapper, NestContainer } from '../injector/container';
+import { MetadataScanner } from '../metadata-scanner';
+import { Resolver } from './interfaces/resolver.interface';
+import { RouterExceptionFilters } from './router-exception-filters';
+import { RouterExplorer } from './router-explorer';
+import { RouterProxy } from './router-proxy';
 
 export class RoutesResolver implements Resolver {
   private readonly logger = new Logger(RoutesResolver.name, true);

packages/core/scanner.ts

@@ -17,11 +17,11 @@ import {
   isUndefined,
 } from '@nestjs/common/utils/shared.utils';
 import 'reflect-metadata';
-import { MetadataScanner } from '../core/metadata-scanner';
 import { ApplicationConfig } from './application-config';
 import { APP_FILTER, APP_GUARD, APP_INTERCEPTOR, APP_PIPE } from './constants';
 import { CircularDependencyException } from './errors/exceptions/circular-dependency.exception';
 import { NestContainer } from './injector/container';
+import { MetadataScanner } from './metadata-scanner';
 
 interface ApplicationProviderWrapper {
   moduleKey: string;

packages/core/test/injector/module.spec.ts

@@ -1,14 +1,16 @@
 import { expect } from 'chai';
 import * as sinon from 'sinon';
-import { Module as ModuleDecorator } from '../../../common/decorators/modules/module.decorator';
-import { UnknownExportException } from '../../errors/exceptions/unknown-export.exception';
-import { Module } from '../../injector/module';
 import { Component } from '../../../common/decorators/core/component.decorator';
+import { Module as ModuleDecorator } from '../../../common/decorators/modules/module.decorator';
 import { RuntimeException } from '../../errors/exceptions/runtime.exception';
+import { UnknownElementException } from '../../errors/exceptions/unknown-element.exception';
+import { UnknownExportException } from '../../errors/exceptions/unknown-export.exception';
 import { NestContainer } from '../../injector/container';
+import { Module } from '../../injector/module';
 
 describe('Module', () => {
   let module: Module;
+  let container: NestContainer;
 
   @ModuleDecorator({})
   class TestModule {}
@@ -16,7 +18,8 @@ describe('Module', () => {
   class TestComponent {}
 
   beforeEach(() => {
-    module = new Module(TestModule as any, [], new NestContainer());
+    container = new NestContainer();
+    module = new Module(TestModule as any, [], container);
   });
 
   it('should add route', () => {
@@ -287,13 +290,12 @@ describe('Module', () => {
   });
 
   describe('createModuleRefMetatype', () => {
-    let components: Map<string, any>;
     let moduleRef;
 
-    beforeEach(() => {
-      components = new Map();
+    class SimpleClass {}
 
-      const Class = module.createModuleRefMetatype(components);
+    beforeEach(() => {
+      const Class = module.createModuleRefMetatype();
       moduleRef = new Class();
     });
 
@@ -301,13 +303,8 @@ describe('Module', () => {
       expect(!!moduleRef.get).to.be.true;
     });
     describe('get', () => {
-      it('should return component if exists', () => {
-        const comp = { instance: [] };
-        components.set('comp', comp);
-        expect(moduleRef.get('comp')).to.be.eql(comp.instance);
-      });
-      it('should return null if not exists', () => {
-        expect(moduleRef.get('fail')).to.be.null;
+      it('should throw exception if not exists', () => {
+        expect(() => moduleRef.get('fail')).to.throws(UnknownElementException);
       });
     });
   });

packages/microservices/nest-microservice.ts

@@ -1,28 +1,23 @@
-import * as optional from 'optional';
-import iterate from 'iterare';
-import { NestContainer } from '@nestjs/core/injector/container';
-import { MicroservicesModule } from './microservices-module';
-import { messages } from '@nestjs/core/constants';
-import { Logger } from '@nestjs/common/services/logger.service';
-import { Server } from './server/server';
-import { MicroserviceOptions } from './interfaces/microservice-configuration.interface';
-import { ServerFactory } from './server/server-factory';
-import { Transport } from './enums/transport.enum';
 import {
-  INestMicroservice,
-  WebSocketAdapter,
   CanActivate,
-  PipeTransform,
-  NestInterceptor,
   ExceptionFilter,
-  OnModuleInit,
+  INestMicroservice,
+  NestInterceptor,
+  PipeTransform,
+  WebSocketAdapter,
 } from '@nestjs/common';
+import { Logger } from '@nestjs/common/services/logger.service';
 import { ApplicationConfig } from '@nestjs/core/application-config';
-import { CustomTransportStrategy } from '@nestjs/microservices';
-import { Module } from '@nestjs/core/injector/module';
-import { isNil, isUndefined } from '@nestjs/common/utils/shared.utils';
-import { OnModuleDestroy } from '@nestjs/common/interfaces';
+import { messages } from '@nestjs/core/constants';
+import { NestContainer } from '@nestjs/core/injector/container';
 import { NestApplicationContext } from '@nestjs/core/nest-application-context';
+import { CustomTransportStrategy } from '@nestjs/microservices';
+import * as optional from 'optional';
+import { Transport } from './enums/transport.enum';
+import { MicroserviceOptions } from './interfaces/microservice-configuration.interface';
+import { MicroservicesModule } from './microservices-module';
+import { Server } from './server/server';
+import { ServerFactory } from './server/server-factory';
 
 const { SocketModule } =
   optional('@nestjs/websockets/socket-module') || ({} as any);
@@ -144,59 +139,7 @@ export class NestMicroservice extends NestApplicationContext
 
   protected async closeApplication(): Promise<any> {
     this.socketModule && (await this.socketModule.close());
-    await this.callDestroyHook();
+    await super.close();
     this.setIsTerminated(true);
   }
-
-  protected async callInitHook(): Promise<any> {
-    const modules = this.container.getModules();
-    await Promise.all(
-      iterate(modules.values()).map(
-        async module => await this.callModuleInitHook(module),
-      ),
-    );
-    this.setIsInitHookCalled(true);
-  }
-
-  protected async callModuleInitHook(module: Module): Promise<any> {
-    const components = [...module.routes, ...module.components];
-    await Promise.all(
-      iterate(components)
-        .map(([key, { instance }]) => instance)
-        .filter(instance => !isNil(instance))
-        .filter(this.hasOnModuleInitHook)
-        .map(async instance => await (instance as OnModuleInit).onModuleInit()),
-    );
-  }
-
-  protected hasOnModuleInitHook(instance: any): instance is OnModuleInit {
-    return !isUndefined((instance as OnModuleInit).onModuleInit);
-  }
-
-  private async callDestroyHook(): Promise<any> {
-    const modules = this.container.getModules();
-    await Promise.all(
-      iterate(modules.values()).map(
-        async module => await this.callModuleDestroyHook(module),
-      ),
-    );
-  }
-
-  private async callModuleDestroyHook(module: Module): Promise<any> {
-    const components = [...module.routes, ...module.components];
-    await Promise.all(
-      iterate(components)
-        .map(([key, { instance }]) => instance)
-        .filter(instance => !isNil(instance))
-        .filter(this.hasOnModuleDestroyHook)
-        .map(
-          async instance =>
-            await (instance as OnModuleDestroy).onModuleDestroy(),
-        ),
-    );
-  }
-
-  private hasOnModuleDestroyHook(instance): instance is OnModuleDestroy {
-    return !isUndefined((instance as OnModuleDestroy).onModuleDestroy);
-  }
 }