jest
Safeguard articles tagged "jest" — guides, analysis, and best practices for software supply chain and application security.
7 articles
Writing your first Jest unit tests for security-critical JavaScript
Jest ships to ~41M weekly npm installs with assertions, mocking, and coverage built in — here's how to structure your first tests around security logic.
Jest Latest Version: Upgrading Safely in 2026
The Jest latest version is 30.x, and keeping current matters less for features than for cutting the pile of transitive dev dependencies older Jest drags in.
jest-environment-jsdom: Setup, Gotchas, and Supply Chain Notes
Setting up npm jest-environment-jsdom correctly, why it stopped shipping with Jest, and what its jsdom dependency tree means for your test toolchain's security.
babel-jest: What It Does and How to Keep Your Test Toolchain Safe
babel-jest npm sits in almost every Jest install, quietly transforming your code before tests run. Here is what it does and why test toolchains deserve supply chain attention.
jest-junit: Secure CI Test Reporting for Jest
jest-junit turns Jest test results into JUnit XML that CI systems can read. Here is how to configure it and keep the reporting pipeline free of security surprises.
@angular-builders/jest: Setup and Dependency Security
@angular-builders/jest lets you run ng test with Jest instead of Karma. Here is how it works, the version-alignment rule that trips teams up, and how to keep its dependency tree secure.
@types/jest Explained: What It Is and How to Use It Safely
@types/jest ships the TypeScript type definitions for Jest. Here is what the package actually contains, why it lives in devDependencies, and how to keep it from becoming a supply chain risk.
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