Overview

⭐ If this plugin caught a real bug for you, star the repo — it's the signal that keeps these rules maintained.

Description

This plugin provides Security rules tailored for NestJS applications (Controllers, Providers, Decorators).

Philosophy

Interlace fosters strength through integration. Instead of stacking isolated rules, we interlace security directly into your workflow to create a resilient fabric of code. We believe tools should guide rather than gatekeep, providing educational feedback that strengthens the developer with every interaction.

Getting Started

• To check out the guide, visit eslint.interlace.tools. 📚
• 要查看中文 指南, 请访问 eslint.interlace.tools. 📚
• 가이드 문서는 eslint.interlace.tools에서 확인하실 수 있습니다. 📚
• ガイドは eslint.interlace.toolsでご確認ください。 📚
• Para ver la guía, visita eslint.interlace.tools. 📚
• للاطلاع على الدليل، قم بزيارة eslint.interlace.tools. 📚

npm install eslint-plugin-nestjs-security --save-dev

⚙️ Configuration Presets

📚 Supported Libraries

Library	npm	Downloads	Detection
@nestjs/common			Decorators, Guards
@nestjs/core			App Config
class-validator			DTO Validation
@nestjs/throttler			Rate Limiting

⚠️ Global Configuration Handling

Static Analysis Limitation: ESLint analyzes files independently. It cannot detect cross-file configurations like app.useGlobalGuards() in main.ts while linting users.controller.ts.

Understanding the Problem

NestJS supports two security configuration approaches:

Solution: assumeGlobal* Options

For teams using global configuration, set assumeGlobal*: true to disable per-file checks:

// eslint.config.js
import nestjsSecurity from 'eslint-plugin-nestjs-security';

export default [
  {
    ...nestjsSecurity.configs.recommended,
    rules: {
      // Tell ESLint: "We have app.useGlobalGuards() in main.ts"
      'nestjs-security/require-guards': ['warn', { assumeGlobalGuards: true }],

      // Tell ESLint: "We have app.useGlobalPipes(new ValidationPipe()) in main.ts"
      'nestjs-security/no-missing-validation-pipe': [
        'warn',
        { assumeGlobalPipes: true },
      ],

      // Tell ESLint: "We have ThrottlerModule.forRoot() in app.module.ts"
      'nestjs-security/require-throttler': [
        'warn',
        { assumeGlobalThrottler: true },
      ],
    },
  },
];

Alternative: Use Skip Decorators

The rules recognize common "bypass" decorators for intentionally unprotected endpoints:

// These bypass require-guards
@Public()        // nestjs-passport pattern
@SkipAuth()      // common custom decorator
@AllowAnonymous() // alternative naming
@NoAuth()        // alternative naming

// These bypass require-throttler
@SkipThrottle()  // @nestjs/throttler built-in

🔮 Future: Cross-File Global Detection (Planned)

We're planning dedicated rules to verify global configuration exists:

• require-global-guards → Ensures main.ts contains app.useGlobalGuards()
• require-global-validation-pipe → Ensures main.ts contains app.useGlobalPipes()
• require-global-throttler → Ensures app.module.ts imports ThrottlerModule

This will enable a "trust but verify" approach for teams using global configuration.

📦 Compatibility

See the ESLint Version Support Policy — current ecosystem share data, the 20% gate, and the forward-looking exception that covers v10.

Rules

Legend

🔗 Related ESLint Plugins

Part of the Interlace ESLint Ecosystem — AI-native security plugins with LLM-optimized error messages:

Plugin	Downloads	Description
eslint-plugin-secure-coding		General security rules & OWASP guidelines.
eslint-plugin-pg		PostgreSQL security & best practices.
eslint-plugin-node-security		Node.js core-module security (fs, child_process, vm, crypto, Buffer).
eslint-plugin-jwt		JWT security & best practices.
eslint-plugin-browser-security		Browser-specific security & XSS prevention.
eslint-plugin-express-security		Express.js security hardening rules.
eslint-plugin-lambda-security		AWS Lambda security best practices.
eslint-plugin-nestjs-security		NestJS security rules & patterns.
eslint-plugin-mongodb-security		MongoDB security best practices.
eslint-plugin-vercel-ai-security		Vercel AI SDK security hardening.
eslint-plugin-import-next		Next-gen import sorting & architecture.

⭐ Support & follow

If this plugin caught a real bug for you, star the repo — stars are the signal that keeps the Interlace ESLint ecosystem maintained — and follow the writeups on Dev.to for the benchmarks and security research behind these rules.

📄 License

MIT © Ofri Peretz