I'm using an nx monorepo with NestJS and MikroORM.
I've create a module called PersistanceModule that is defined like this:
import { Module } from '@nestjs/common';
import { MikroOrmModule } from '@mikro-orm/nestjs';
import { UserRepository } from './repositories/user-repository';
import { userSchema } from './configurations/user.configuration';
@Module({
imports: [
MikroOrmModule.forRoot({
port: 5432,
user: 'user',
host: 'localhost',
dbName: 'vector',
password: 'password',
entities: [userSchema],
discovery: { warnWhenNoEntities: true },
}),
],
providers: [UserRepository],
exports: [UserRepository],
})
export class PersistanceModule {}
And a repo that is defined like this:
import { EntityManager, EntityRepository } from '@mikro-orm/postgresql';
import { Injectable } from '@nestjs/common';
import { IUserRepository, User } from '@vector/domain';
import { userSchema } from '../configurations/user.configuration';
import { MikroORM } from '@mikro-orm/core';
Injectable();
export class UserRepository implements IUserRepository {
private readonly _repository: EntityRepository<User>;
constructor(
private readonly orm: MikroORM,
private readonly em: EntityManager
) {
this._repository = em.getRepository(userSchema);
}
async findById(id: string): Promise<User | null> {
const user = await this._repository.findOne({ id });
return user;
}
async findByEmail(email: string): Promise<User | null> {
const user = await this._repository.findOne({ email });
return user;
}
async add(user: User): Promise<void> {
let newUser = this._repository.create(user);
await this._repository.getEntityManager().flush();
}
async update(user: User): Promise<void> {
// await this.em.nativeUpdate(User, { id: user.id }, user);
}
async delete(id: string): Promise<void> {
// await this.em.nativeDelete(User, { id });
}
}
And I've defined my entities via schema to avoid polluting the domain with decorators.
import { BaseEntity } from '@vector/domain';
import { User } from '@vector/domain';
import { EntitySchema } from '@mikro-orm/core';
import { baseSchema } from './base.configuration';
export const userSchema = new EntitySchema<User, BaseEntity>({
class: User,
extends: baseSchema,
schema: 'vector',
properties: {
externalId: { type: 'string', unique: true },
email: { type: 'string', unique: true },
password: { type: 'string' },
active: { type: 'boolean', default: true },
verificationToken: { type: 'string' },
},
});
But when I start the app that is bundled with webpack, I'm getting always this error:
TypeError: Cannot read properties of undefined (reading 'getRepository') at new UserRepository (C:\Work\Vector\vector\dist\vector-client-api\development\webpack:\packages\infrastructure\persistance\src\lib\repositories\user-repository.ts:15:27) at Injector.instantiateClass (C:\Work\Vector\vector\node_modules@nestjs\core\injector\injector.js:365:19) at callback (C:\Work\Vector\vector\node_modules@nestjs\core\injector\injector.js:65:45) at Injector.resolveConstructorParams (C:\Work\Vector\vector\node_modules@nestjs\core\injector\injector.js:144:24) at Injector.loadInstance (C:\Work\Vector\vector\node_modules@nestjs\core\injector\injector.js:70:13) at Injector.loadProvider (C:\Work\Vector\vector\node_modules@nestjs\core\injector\injector.js:97:9) at C:\Work\Vector\vector\node_modules@nestjs\core\injector\instance-loader.js:56:13 at async Promise.all (index 4) at InstanceLoader.createInstancesOfProviders (C:\Work\Vector\vector\node_modules@nestjs\core\injector\instance-loader.js:55:9) at C:\Work\Vector\vector\node_modules@nestjs\core\injector\instance-loader.js:40:13
Does anyone now what this is and how to surpass it?
The Injectable() method should be changed to the @Injectbale() decorator, so that Typescript properly emits the class's metadata so Nest is able to read it