---
title: "NestJS"
---

Prerequisites:

- Set up and add envars to [Infisical Cloud](https://app.infisical.com)
- [Install the CLI](/cli/overview)

## Initialize Infisical for your [NestJS](https://nestjs.com) app

```bash
# move to your Next.js app
cd /path/to/project

# initialize infisical
infisical init
```

## Modify the start script in your `package.json`

```json
...
"scripts": {
    "prebuild": "rimraf dist",
    "build": "nest build",
    "format": "prettier --write \"src/**/*.ts\" \"test/**/*.ts\"",
    "start": "infisical run -- nest start",
    "start:dev": "infisical run -- nest start --watch",
    "start:debug": "nest start --debug --watch",
    "start:prod": "node dist/main",
    "lint": "eslint \"{src,apps,libs,test}/**/*.ts\" --fix",
    "test": "jest",
    "test:watch": "jest --watch",
    "test:cov": "jest --coverage",
    "test:debug": "node --inspect-brk -r tsconfig-paths/register -r ts-node/register node_modules/.bin/jest --runInBand",
    "test:e2e": "jest --config ./test/jest-e2e.json"
}
...
```

## Start your server with environment variables injected

```bash
npm run start

# or start development server

npm run start:dev
```
