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What do Node.js deprecation flags do: pending, trace and throw?
Node.js has three deprecation flags with different jobs. Learn when to use pending, trace and throw in tests before moving to a new Node major.
Oct 19, 20264 min read
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Supply Chain Security, in plain English.
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.
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Why does a forgotten await matter in Node, and how do you lint it?
A promise nobody handles can skip a security check or crash the process. How Node treats unhandled rejections and how no-floating-promises catches them.
Oct 19, 20263 min read
Developer Tools
How do you teach a new engineer vulnerability triage in the first week?
A first-week checklist to teach a new engineer vulnerability triage: what to read, three alerts to walk through together, and when they can own the queue.
Oct 19, 20264 min read
Developer Tools
What should you check about licenses when a pull request adds a package?
A five minute license check for a pull request that adds a dependency: identify the license, scope, transitive additions, and record the call.
Oct 19, 20263 min read
Developer Tools
Why do reproducible build guides say to avoid network access in builds?
Network inputs change, vanish or get replaced. Learn why guides treat them as volatile and how checksums, lockfiles and vendoring keep a build repeatable.
Oct 19, 20264 min read
Developer Tools
NestJS security headers: use app.useSecurityHeaders or Helmet?
Newer NestJS docs describe app.useSecurityHeaders with Helmet 8 defaults on Express and Fastify. See the headers, call order rules and when Helmet fits.
Oct 19, 20263 min read
Developer Tools
NestJS Swagger: which option hides the UI and which hides the JSON?
In NestJS, ui:false hides Swagger UI but leaves api-json and api-yaml reachable. raw:false removes the definitions too. How to set each safely.
Oct 19, 20263 min read
Developer Tools
How do you stop NestJS routes being left unauthenticated?
Register an auth guard with APP_GUARD so every route is protected by default, then mark public routes explicitly. Why this beats per route guards.
Oct 19, 20263 min read
Developer Tools
Fixing a native dependency: test every OS and CPU architecture
A security fix to a package with compiled code can behave differently on each OS and chip. Which platforms to test before you merge, and why.
Oct 19, 20264 min read
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