NestJs can't resolve dependencies of the HeicService - node.js

Question

I am getting the following error when trying to spin up nestjs
[Nest] 47548 - 04/23/2022, 10:41:12 AM ERROR [ExceptionHandler] Nest can't resolve dependencies of the HeicService (?, +). Please make sure that the argument dependency at index [0] is available in the HeicModule context.
Potential solutions:
- If dependency is a provider, is it part of the current HeicModule?
- If dependency is exported from a separate #Module, is that module imported within HeicModule?
#Module({
imports: [ /* the Module containing dependency */ ]
})
But as from my understanding I am doing everything right regards import/export of Modules, no circular dependency and so on. Here are my modules:
App
import { Module } from '#nestjs/common';
import { EurekaModule } from './eureka/eureka.module';
import { HeicModule } from './heic/heic.module';
#Module({
imports: [HeicModule, EurekaModule],
})
export class AppModule {}
Config
import { Module } from '#nestjs/common';
import { ConfigService } from './config.service';
#Module({
providers: [ConfigService],
exports: [ConfigService],
})
export class ConfigModule {}
ConfigService
import { Injectable } from '#nestjs/common';
import { Config } from './config.interface';
#Injectable()
export class ConfigService {
private readonly map: Config;
Redis
import { CacheModule, Module } from '#nestjs/common';
import { ClientsModule, Transport } from '#nestjs/microservices';
import { ConfigModule } from '../config/config.module';
import { ConfigService } from '../config/config.service';
import { RedisCacheService } from './redis-cache.service';
import * as redisStore from 'cache-manager-redis-store';
import { RedisPublishService } from './redis-publish.service';
#Module({
imports: [
CacheModule.register({
imports: [ConfigModule],
inject: [ConfigService],
useFactory: async (configService: ConfigService) => ({
store: redisStore,
host: configService.get('host'),
port: configService.get('port'),
keyPrefix: configService.get('keyPrefix'),
userName: configService.get('username'),
password: configService.get('password'),
ttl: configService.get('cacheTTL'),
}),
}),
ClientsModule.register([
{
name: 'PUBLISH_SERVICE',
transport: Transport.REDIS,
options: {
url: 'redis://localhost:6379',
},
},
]),
],
providers: [RedisCacheService, RedisPublishService],
exports: [RedisCacheService, RedisPublishService],
})
export class RedisModule {}
Redis Pub/Sub Service
import { Inject, Injectable } from '#nestjs/common';
import { ClientProxy } from '#nestjs/microservices';
import { ImageMessage } from './ImageMessage';
#Injectable()
export class RedisPublishService {
private readonly CHANNEL: string = 'heic-image-result';
constructor(#Inject('PUBLISH_SERVICE') private client: ClientProxy) {}
async publishMessage(imageMessage: ImageMessage) {
this.client.emit({ cmd: this.CHANNEL }, imageMessage);
}
}
Redis Cache Service
import { CACHE_MANAGER, Inject, Injectable } from '#nestjs/common';
import { Cache } from 'cache-manager';
import { ImageMessage } from './ImageMessage';
#Injectable()
export class RedisCacheService {
constructor(#Inject(CACHE_MANAGER) private readonly cache: Cache) {}
async get(key): Promise<ImageMessage> {
return this.cache.get(key);
}
async set(key, value) {
await this.cache.set(key, value, 120);
}
}
Heic
import { Module } from '#nestjs/common';
import { RedisModule } from '../redis/redis.module';
import { HeicService } from './heic.service';
import { MessageListenerController } from './message-listener.controller';
#Module({
imports: [RedisModule],
controllers: [MessageListenerController],
providers: [HeicService],
exports: [HeicService],
})
export class HeicModule {}
Service
import { Inject, Injectable } from '#nestjs/common';
import { ImageMessage } from '../redis/ImageMessage';
import { RedisCacheService } from '../redis/redis-cache.service';
import { RedisPublishService } from '../redis/redis-publish.service';
import { OutputFormatEnum } from './output-format.enum';
// eslint-disable-next-line #typescript-eslint/no-var-requires
const convert = require('heic-convert');
#Injectable()
export class HeicService {
constructor(
#Inject() private readonly redisPublishService: RedisPublishService,
#Inject() private readonly redisCache: RedisCacheService,
) {}
Anyone an idea what I am doing wrong?

Answer 1

You're using #Inject() in your constructors with no injection token. You should be passing the injection token you are wanting to inject here. The HeicService's constructor would then look something like this:
#Injectable()
export class HeicService {
constructor(
#Inject(RedisPublishService) private readonly redisPublishService: RedisPublishService,
#Inject(RedisCacheService) private readonly redisCache: RedisCacheService,
) {}
}
The other option, as you're already using classes for the RedisCacheService and RedisPublishService is to just remove the #Inject() decorators all togehter for the HeicService