How to workraound this TypeORM error, "EntityRepository is deprecated , use Repository.extend function instead"?

First of all: npm install @nestjs/typeorm@next NOTE In my project @nestjs/typeorm version is 9.0.0-next.2 and typeorm version is 0.3.6 Create a folder named database in the src of your project then create two files in (typeorm-ex.decorator.ts and typeorm-ex.module.ts) // typeorm-ex.decorator.ts import { SetMetadata } from "@nestjs/common"; export const TYPEORM_EX_CUSTOM_REPOSITORY = "TYPEORM_EX_CUSTOM_REPOSITORY"; export function CustomRepository(entity: Function): ClassDecorator { return SetMetadata(TYPEORM_EX_CUSTOM_REPOSITORY, entity); } And next file // typeorm-ex.module.ts import { DynamicModule, Provider } from "@nestjs/common"; import { getDataSourceToken } from "@nestjs/typeorm"; import { DataSource } from "typeorm"; import { TYPEORM_EX_CUSTOM_REPOSITORY } from "./typeorm-ex.decorator"; export class TypeOrmExModule { public static forCustomRepository<T extends new (...args: any[]) => any>(repositories: T[]): DynamicModule { const providers: Provider[] = []; for (const repository of repositories) { const entity = Reflect.getMetadata(TYPEORM_EX_CUSTOM_REPOSITORY, repository); if (!entity) { continue; } providers.push({ inject: [getDataSourceToken()], provide: repository, useFactory: (dataSource: DataSource): typeof repository => { const baseRepository = dataSource.getRepository<any>(entity); return new repository(baseRepository.target, baseRepository.manager, baseRepository.queryRunner); }, }); } return { exports: providers, module: TypeOrmExModule, providers, }; } } Open your AppModule and modify it like the following: @Module({ imports: [ TypeOrmModule.forRoot({ type: 'mssql', ... entities: [Photo], }), TypeOrmExModule.forCustomRepository([PhotoRepository]), ... ], controllers: [AppController], providers: [ AppService ], }) export class AppModule { } You can create your customer repository like the following : @CustomRepository(Photo) export class PhotoRepository extends Repository<Photo> { public async getAllPhoto() { const query = this.createQueryBuilder('photo') .where('photo.isPublished = :isPublished', { isPublished: true }) const photos = await query.getMany() return photos } } Everything works perfectly. Thanks to @anchan828