p-limit: Safe Concurrency Control in Node.js
The p-limit npm package caps how many promises run at once — a one-function library that quietly prevents self-inflicted outages, API bans, and resource exhaustion in Node.js services.
Deep dives, practical guides, and incident analyses from engineers who build Safeguard. No fluff, no vendor FUD — just what you need to ship secure software.
The p-limit npm package caps how many promises run at once — a one-function library that quietly prevents self-inflicted outages, API bans, and resource exhaustion in Node.js services.
This popular OTP input component for React Native has not shipped an update in years. Here is a security guide to using @twotalltotems/react-native-otp-input, or moving off it.
The bcrypt npm package is a solid password-hashing choice, but its 72-byte input limit and native build story create footguns worth understanding before you ship.
The react-native-android-location-enabler package shows the native Android dialog that asks users to turn on location services. Here is how to use it correctly and the privacy practices that go with it.
Zod is a well-maintained TypeScript validation library that is itself a security asset, if you put it at your trust boundaries. Here is a review and how to use it right.
The image-size npm package has shipped several infinite-loop denial-of-service bugs in 2025. Here is what happened, which versions are affected, and how to use it safely.
npm run dev starts your project's development server via a script in package.json. Here is what actually happens under the hood and the security risks worth knowing.
A guide to react-native-cookies for reading and writing HTTP cookies in React Native apps, the platform gotchas, and how to keep session cookies secure.
The exceljs npm package is a maintained, popular library for reading and writing Excel files, and it is a reasonable choice, but parsing untrusted spreadsheets carries real risk. Here is the review.
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