Developer releases mini-waf, a lightweight npm package to filter Node.js API requests
A developer has published mini-waf, an open-source npm package that adds web application firewall (WAF) capabilities to Node.js APIs in minutes. The package evaluates each incoming request against configurable rule presets — including protections against SQL injection, XSS, and path traversal — and can block, allow, or log requests accordingly. It supports popular frameworks including Express, Fastify, NestJS, and Koa through dedicated adapters or a core API. Users can select protection levels ranging from low to paranoid, with higher levels enabling more rules at the cost of potential false positives. The developer created the package after finding no suitable lightweight WAF solution tailored to the Node.js ecosystem.
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