Directory Structure NestJS

# Source(src) Directory Structure

src
├── auth
├── common
├── config
├── models
├── ... modules
├── jobs
├── providers
├── app.controller.ts
├── app.module.ts
├── app.service.ts
└── main.ts

# Authentication(auth) Directory Structure

https://docs.nestjs.com/security/authentication
src/auth
├── strategies
├── guards
├── auth.dto.ts
├── auth.controller.ts
├── auth.service.ts
└── auth.module.ts

# Common(common) Directory Structure

These are the common files basically needed for the development such as enums,helpers,exceptions,guards,interfaces,interceptors,middlewares,pipes and serializers

src/common
├── enum
│   └── permission.enum.ts
├── decorators
│   ├── metadata
│   │   └── user-types.decorator.ts
│   ├── requests
│   │   └── logged-in-user.decorator.ts
│   └── validations
│       ├── UserExists.ts
│       └── UniqueUserEmail.ts
├── exceptions
│   └── http-exception.filter.ts
├── guards
│   └── role.guard.ts
├── helpers
│   ├── exceptions
│   │   └── validation.helper.ts
│   ├── data-type.helper.ts
├── interceptors
│   └── http-cache.interceptor.ts
├── interfaces
│   ├── inputs.interface.ts
│   └── search.interface.ts
├── middleware
│   └── api-request-logger.middleware.ts
│   └── correlation-id.middleware.ts
├── pipes
│   ├── models
│   │   └── user-entity.pipe.ts
│   ├── search.pipe.ts
│   └── validation.pipe.ts
└── serializers
    ├── responses
    │   ├── error.serializer.ts
    │   └── success.serializer.ts
    └──validation
       └── validation-error.serializer.ts

# Config(config) Directory Structure

https://docs.nestjs.com/techniques/configuration
src/config
├── app
│   ├── app-config.service.ts
│   ├── app-config.controller.ts
│   └── config.ts
└── [...]

# Models(model) Directory Structure

This can be configure relatively depending upon the database (MongoDb, Postgres or Something different like DynamoDb, S3, etc)

#Job(job) Directory Structure

https://docs.nestjs.com/techniques/queues
src/jobs
├── consumers
└── producers

#Providers(provider) Directory Structure

Providers are basically core modules that initiate a connection between the app, such as AWS and its services.