
Security News
TC39 Advances Temporal to Stage 4 Alongside Several ECMAScript Proposals
TC39’s March 2026 meeting advanced eight ECMAScript proposals, including Temporal reaching Stage 4 and securing its place in the ECMAScript 2026 specification.
@jest/expect-utils
Advanced tools
@jest/expect-utilsThis module exports some utils for the expect function used in Jest.
You probably don't want to use this package directly. E.g. if you're writing custom matcher, you should use the injected this.equals.
jest-extended provides a large number of additional matchers for Jest. It offers a wide range of matchers similar to @jest/expect-utils, such as toBeArray, toBeObject, and toBeEmpty, but also includes many more specialized matchers.
Chai is an assertion library for Node.js and the browser that can be paired with any testing framework. It provides a rich set of matchers and is highly extensible. While it is not specifically designed for Jest, it offers similar functionalities through its expect/should interfaces.
expect-more is a set of additional matchers for Jest and Jasmine. It provides a variety of matchers for different data types and use cases, similar to @jest/expect-utils, and aims to make tests more expressive and readable.
FAQs
Unknown package
The npm package @jest/expect-utils receives a total of 34,569,587 weekly downloads. As such, @jest/expect-utils popularity was classified as popular.
We found that @jest/expect-utils demonstrated a healthy version release cadence and project activity because the last version was released less than a year ago. It has 5 open source maintainers collaborating on the project.
Did you know?

Socket for GitHub automatically highlights issues in each pull request and monitors the health of all your open source dependencies. Discover the contents of your packages and block harmful activity before you install or update your dependencies.

Security News
TC39’s March 2026 meeting advanced eight ECMAScript proposals, including Temporal reaching Stage 4 and securing its place in the ECMAScript 2026 specification.

Research
/Security News
Since January 31, 2026, we identified at least 72 additional malicious Open VSX extensions, including transitive GlassWorm loader extensions targeting developers.

Research
Six malicious Packagist packages posing as OphimCMS themes contain trojanized jQuery that exfiltrates URLs, injects ads, and loads FUNNULL-linked redirects.