Installation

Prerequisites

Node.js 18+

Required for ESLint 9.x compatibility

ESLint 9.x

Flat config format is required

ESLint Version

ESLint Interlace requires ESLint 9.x with flat config. See our Flat Config Migration guide if you're upgrading.

Quick Start

Install ESLint and your first security plugin. Choose your package manager:

npm

npm install eslint eslint-plugin-secure-coding --save-dev

pnpm

pnpm add eslint eslint-plugin-secure-coding -D

yarn

yarn add eslint eslint-plugin-secure-coding --dev

Then create eslint.config.js:

eslint.config.js

import secureCoding from 'eslint-plugin-secure-coding';

export default [secureCoding.configs.recommended];

Security Plugins

Choose the plugins that match your stack:

Browser Security

XSS prevention, DOM security, client-side vulnerabilities (50+ rules)

Secure Coding

Injection prevention, input validation (26 rules)

JWT

Token security, algorithm confusion (13 rules)

Node Security

Server-side patterns, cryptography (31 rules)

Database Security

MongoDB Security

NoSQL injection prevention (19 rules)

PostgreSQL

SQL injection prevention (15 rules)

Framework Security

Express

Express.js hardening (14 rules)

NestJS

NestJS security patterns (10 rules)

AWS Lambda

Lambda & Middy security (16 rules)

Vercel AI

AI SDK security (22 rules)

Quality Plugins

Import Next

Fast import organization, 100x faster cycle detection (61 rules)

Conventions

Team coding standards (9 rules)

Maintainability

Code readability (8 rules)

Reliability

Error handling patterns (8 rules)

Modularity

Clean architecture (7 rules)

Verify Installation

npx eslint --version
npx eslint .