feature() support abstract classes in nest ctx

Author: kamilmysliwiec

packages/core/injector/container-scanner.ts

@@ -1,4 +1,5 @@
 import { Type } from '@nestjs/common';
+import { Abstract } from '@nestjs/common/interfaces';
 import { isFunction } from '@nestjs/common/utils/shared.utils';
 import { UnknownElementException } from '../errors/exceptions/unknown-element.exception';
 import { InstanceWrapper, NestContainer } from './container';
@@ -10,7 +11,7 @@ export class ContainerScanner {
   constructor(private readonly container: NestContainer) {}
 
   public find<TInput = any, TResult = TInput>(
-    typeOrToken: Type<TInput> | string | symbol,
+    typeOrToken: Type<TInput> | Abstract<TInput> | string | symbol,
   ): TResult {
     this.initFlatContainer();
     return this.findInstanceByPrototypeOrToken<TInput, TResult>(
@@ -20,7 +21,7 @@ export class ContainerScanner {
   }
 
   public findInstanceByPrototypeOrToken<TInput = any, TResult = TInput>(
-    metatypeOrToken: Type<TInput> | string | symbol,
+    metatypeOrToken: Type<TInput> | Abstract<TInput> | string | symbol,
     contextModule: Partial<Module>,
   ): TResult {
     const dependencies = new Map([

packages/core/nest-application-context.ts

@@ -6,6 +6,7 @@ import {
   OnModuleDestroy,
   OnModuleInit,
 } from '@nestjs/common';
+import { Abstract } from '@nestjs/common/interfaces';
 import { Type } from '@nestjs/common/interfaces/type.interface';
 import { isNil, isUndefined } from '@nestjs/common/utils/shared.utils';
 import iterate from 'iterare';
@@ -46,7 +47,7 @@ export class NestApplicationContext implements INestApplicationContext {
   }
 
   public get<TInput = any, TResult = TInput>(
-    typeOrToken: Type<TInput> | string | symbol,
+    typeOrToken: Type<TInput> | Abstract<TInput> | string | symbol,
     options: { strict: boolean } = { strict: false },
   ): TResult {
     if (!(options && options.strict)) {
@@ -170,7 +171,7 @@ export class NestApplicationContext implements INestApplicationContext {
   }
 
   protected find<TInput = any, TResult = TInput>(
-    typeOrToken: Type<TInput> | string | symbol,
+    typeOrToken: Type<TInput> | Abstract<TInput> | string | symbol,
   ): TResult {
     return this.containerScanner.find<TInput, TResult>(typeOrToken);
   }