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expressjs-typescript-prisma-boilerplate

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An express + typescript boilerplate with prisma preconfigured with eslint + prettier, swagger, husky, jest and supertest

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# Express + Typescript + Prisma boilerplate

This is an opinionated express + typescript boilerplate. Prisma is being used as an ORM to have the flexibility of switching databases with minimal code change.
This repo is created as a template repo so that [creating new repo from this template](https://docs.github.com/en/repositories/creating-and-managing-repositories/creating-a-repository-from-a-template) would be easier

## Stack

[![My Tech Stack](https://github-readme-tech-stack.vercel.app/api/cards?fontWeight=normal&align=left&titleAlign=center&lineCount=4&theme=github_dark&hideTitle=true&line1=node.js,node.js,ddbfef;typescript,typescript,543e05;&line3=eslint,eslint,3663f5;prettier,prettier,2ef01c;husky,husky,9d8ed0;commitlint,commitlint,b2f3e7;&line2=express,express,bd3ea6;prisma,prisma,09acb9;&line4=jest,jest,de5bd6;supertest,supertest,cb1288;swagger,swagger,172770;)](https://github-readme-tech-stack.vercel.app/api/cards?align=center&titleAlign=center&lineCount=4&theme=github_dark&hideTitle=true&line1=node.js,node.js,ddbfef;typescript,typescript,543e05;&line3=eslint,eslint,3663f5;prettier,prettier,2ef01c;husky,husky,9d8ed0;commitlint,commitlint,b2f3e7;&line2=express,express,bd3ea6;prisma,prisma,09acb9;&line4=jest,jest,de5bd6;supertest,supertest,cb1288;swagger,swagger,172770;)

| Tool | Description |
| --- | --- |
| Node.js | A JavaScript runtime built on Chrome's V8 JavaScript engine that allows for server-side JavaScript execution |
| Express | A popular web framework for Node.js that provides a variety of features for building web applications |
| TypeScript | A superset of JavaScript that adds optional static typing, classes, and other features to the language |
| Prisma | A database toolkit and ORM that allows for type-safe database access and schema management |
| ESLint | A tool for identifying and reporting on patterns found in ECMAScript/JavaScript code |
| Prettier | A tool for automatically formatting code to enforce consistent style |
| Husky | A tool for running scripts in response to Git events, such as commits or pushes |
| ts-node-dev | A development tool for running TypeScript code with automatic restarts and fast compilation times |
| Swagger | A tool for designing, building, and documenting RESTful APIs |
| Commitizen | A tool for making it easier to follow the conventional commit format for Git commits |
| Jest | A JavaScript testing framework with a focus on simplicity and ease of use |
| Supertest | A library for testing Node.js HTTP servers using a fluent API |

## Features

:white_check_mark: Prisma integrated

:white_check_mark: Swagger for api documentation

:white_check_mark: Linting and formatting with eslint and prettier

:white_check_mark: e2e/unit testing with jest and supertest

:white_check_mark: Commit hooks with husky

:white_check_mark: Multiple environment support

:white_check_mark: Advanced logging with winston

:white_check_mark: env validation

:white_check_mark: Preconfigured error handlers

:white_check_mark: Ensures consitent file naming convention

## Required Stack

| Tool       | Version          |
|------------|------------------|
| NodeJS     | >=16             |
| Typescript | >=4\.9\.4        |

## Current Stack

| Tool       |  Version         |
|------------|------------------|
| NodeJS     | 18               |
| Typescript | 5                |

## Clone

Clone the project

```bash
  git clone https://github.com/vintagegnome/expressjs-typescript-prisma-boilerplate.git
```

Go to the project directory

```bash
  cd expressjs-typescript-prisma-boilerplate
```

## Environment setup

Multiple enviroments are supported namely `development`, `test`, `staging`, `production` as defined in `envirornment.enum.ts`

```ts
  Environments {
    PRODUCTION = 'production',
    DEV = 'development',
    TEST = 'test',
    STAGING = 'staging',
  }
```

1.Development Environment: Used during the development of the application

2.Test Environment: Used to test the application before it is deployed to production

3.Staging Environment: Used to simulate the production environment as closely as possible. It is used to test the application in a live-like environment before it is deployed to production.

4.Production Environment: This environment is where the application is deployed and accessed by end-users.

Multiple env files are also supported according to each environment as below

* `.env`: The default environment file used in all environments, unless a specific custom environment file is present. Contains common configuration variables used across all environments.
* `.env.dev`, `.env.test`, `.env.stage`, `.env.prod`: Custom environment files specific to each environment. Used to customize the configuration of the application for each environment.

**Note**: Custom environment files have priority over the default .env file. Configuration variables in a specific custom environment file take precedence over the ones in the default .env file.

## Run Locally

Run
```bash 
  make setup
```
to setup the project or run each steps individually as below

Install dependencies

```bash
  npm i
```

Create env file from .env.example

```bash
  cp .env.example .env
  # Add env values to .env file after this
```

Start app in dev mode

```bash
  npm run dev
```

## Scripts

Following are the list of predefined scripts available in the app

| Script Name     | Description                                   | Command                   |
|-----------------|-----------------------------------------------|---------------------------|
| dev             | Runs app in development mode with ts-node-dev | `npm run dev`             |
| build           | Builds the app with tsc to dist folder        | `npm run build`           |
| start           | Starts the build                              | `npm run start`           |
| prod            | Builds and runs the app in production mode    | `npm run prod`            |
| prisma:generate | Generates prisma client types                 | `npm run prisma:generate` |
| prisma:migrate  | Runs prisma db migration                      | `npm run prisma:migrate`  |
| prisma:seed     | Seeds db                                      | `npm run prisma:seed`     |
| prisma:studio   | Opens prisma studio                           | `npm run prisma:studio`   |
| lint            | Lints the files with eslint                   | `npm run lint`            |
| lint:fix        | Lints and fixes files with eslint             | `npm run lint:fix`        |
| format          | Formats files with prettier                   | `npm run format`          |
| commit          | Opens commitizen                              | `npm run commit`          |
| test            | Runs tests                                    | `npm run test`            |
| test:e2e        | Runs e2e tests                                | `npm run test:e2e`        |
| test:integration| Runs integration tests                        | `npm run test:integration`|
| test:unit       | Runs unit tests                               | `npm run test:unit`       |
| clean           | Cleans autogenerated folders and files        | `npm run clean`           |
| clean:build     | Removes previous build folder                 | `npm run clean:build`     |

Apart from this, there are some utitility scripts defined in Makefile

`make test`: Easier way to run tests

`make module`: Creates a new folder in modules folder and creates controller, route and service files inside the folder

`make env`: Creates env file from .env.example with the values provided

## Folder structure

```
├── dist
├── logs
├── prisma
├── public
├── src
└── tests
```

| Folder     | Description                                                                                  |
|------------|----------------------------------------------------------------------------------------------|
| dist       | Contains the autogenerated output of the TypeScript compiler (tsc)                           |
| logs       | Contains log files                                                                           |
| prisma     | Used by the Prisma to store database schema definitions, seed data, and other related files. |
| public     | Static resources that are publicly accessible                                                |
| scripts    | Contains custom scripts, probably bash scripts                                               |
| src        | Source folder                                                                                |
| tests      | Containes unit/e2e test files and utitity functions/types used by tests                      |

### src

The source directory contains the following folders

```
├── config
├── dto
├── enums
├── lib
├── middlewares
├── modules
├── types
└── utils
```

Folder | Description
------ | -----------
config | Contains configuration files for the whole app and different libraries.
dto | Contains Data Transfer Objects (DTOs) which are used to transfer data between different layers of the app.
enums | Contains TypeScript enum definitions which can be used throughout the app to ensure type safety and consistency.
lib | Contains any external libraries or modules that the app may depend on, as well as any custom utility functions or classes that you have written yourself. This can include things like a custom logger, validation functions, or other commonly used functionality that doesn't fit neatly into any of the other folders.
middlewares | Contains middleware functions which can be used to modify requests and responses as they pass through the app.
modules | Contains the main modules of the app, each of which can contain submodules, controllers, services, and other components.
types | Contains type definitions which can be used throughout the app to ensure type safety and consistency.
utils | Contains utility functions or classes that can be used throughout the app for common tasks, such as string manipulation, date formatting, or math calculations. These functions may not fit neatly into any of the other folders, but are still useful components of the app.

## Typescript configuration

This repo contains four tsconfig files.

* `tsconfig.json`: Contains the base configuration options that apply to all TypeScript files in your project, such as the target ECMAScript version, the module system to use, the paths to the source files and output directories, and various compiler options related to type-checking, strictness, and optimization.

* `tsconfig.build.json`: This configuration file is intended to be used for building your project for production. It extends the base configuration defined in tsconfig.json, but may override some options to optimize the build process or reduce bundle size. This configuration may also exclude certain files or directories that are not needed in the production build.

* `tsconfig.dev.json`: This configuration file is intended to be used for development purposes. It extends the base configuration defined in tsconfig.json, but may enable additional options or checks that are useful during development, and also contains the configuration for ts-node-dev.

* `tsconfig.eslint.json`: This configuration file is intended to be used by Eslint. It may contain TypeScript-specific ESLint rules and configuration options, which may differ from the regular TypeScript configuration. This file may also extend the base TypeScript configuration from tsconfig.json to ensure that the TypeScript code analyzed by ESLint matches the actual compilation output.

## License

[MIT](https://choosealicense.com/licenses/mit/)

## Badges

[![MIT License](https://img.shields.io/badge/License-MIT-green.svg)](https://choosealicense.com/licenses/mit/)

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