Following the NestJS documentation, I created a config.ts file using js-yaml:

import { readFileSync } from "fs"
import * as yaml from "js-yaml"
import { join } from "path"

const YAML_CONFIG_FILENAME = "config.yaml"

export type Config = {
  app: {
    name: string
    env: string
  }  
  backend: {
    host: string
    token: string
  }
}

export default () => {
  return yaml.load(
    readFileSync(join(__dirname, YAML_CONFIG_FILENAME), "utf8"),
  ) as Config
};

In my module that uses HttpModule, I inject ConfigService as shown below:

import { Module } from "@nestjs/common"
import { ConfigService } from "@nestjs/config"
import { HttpModule } from "@nestjs/axios"
import { Config } from "@/config/config"

@Module({
  imports: [
    HttpModule.registerAsync({      
      imports: [ConfigModule],
      useFactory: async (configService: ConfigService) => {
        
        const app = configService.get("app")
        const backend = configService.get("backend")

        return {
          baseURL: backend.host,
          headers: {
            "Content-Type": "application/vnd.api+json",
            "Authorization": backend.token,
          }
        }
      },
      inject: [ConfigService],
    }),
  ],
  controllers: [
    NetworkController,
  ],
  providers: [
    NetworkService,
  ],
  exports: [],
})
export class NetworkModule {
}

What I would like to do is get the entire configuration object instead of fetching each property one by one:

const config = configService.getAll()
const app = config.app
const backend = config.backend 

I checked the ConfigService types and noticed that it has an internalConfig field, but it’s set to private.

Is it possible to retrieve all configuration properties at once?