jest-mock
npmv30.5.1TypeScript**Note:** More details on user side API can be found in [Jest documentation](https://jestjs.io/docs/mock-function-api).
Safe to adopt
Yes — jest-mock scores well across adoption, maintenance, weight, supply chain, and licensing. 62.9M downloads per week and 7 known dependents. Last published 9 days ago. 16 releases in the last 2 years.
- AAdoption: grade A, Excellent.
62.9M downloads per week and 7 known dependents.
- AMaintenance: grade A, Excellent.
Last published 9 days ago. 16 releases in the last 2 years.
- BWeight: grade B, Good.
Pulls in 19 transitive packages, about 3.0 MB installed (at least — some of the tree is still being crawled).
- ASupply chain: grade A, Excellent.
No install scripts, 5 maintainers, and a contained dependency surface.
- ALicense: grade A, Excellent.
MIT — permissive, with no copyleft found in the dependency tree.
Grades are computed deterministically from registry metadata collected by PackageGraph — downloads, dependents, publish dates, the resolved dependency tree, maintainer count, and declared licenses. No third-party scores are used.
Install cost
What you actually take on by adding jest-mock to a project.
Runtime packages this one declares itself.
Distinct packages in the full runtime tree, deduplicated the way a package manager would.
Unpacked size of this package plus its entire runtime tree.
Longest resolved dependency chain below this package.
Part of this dependency tree has not been crawled yet, so these figures are a lower bound rather than a final total.
Licenses in the dependency tree
Every license you inherit by installing jest-mock, not just its own. Check this before a legal review, not after.
Compatibility
- Node.js
- node ^18.14.0 || ^20.0.0 || ^22.0.0 || >=24.0.0
- Module format
- ESM + CommonJS
- TypeScript
- Types included
- Install scripts
- None
Quick start
A usage example from the jest-mock README.
import {ModuleMocker} from 'jest-mock';Dependencies
Declared by jest-mock v30.5.1. Runtime dependencies are installed with the package; dev dependencies are not.
Used by
Popular packages that depend on jest-mock.
Fire events the same way the user does
This package exports the `expect` function used in [Jest](https://jestjs.io/). You can find its documentation [on Jest's website](https://jestjs.io/docs/expect).
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Relationship graph
Dependencies (left) and dependents (right) of jest-mock.
Frequently installed together
This package contains shared types of Jest's packages.
This packages is a collection of utilities and helper functions
TypeScript definitions for node
No description provided.
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An extremely fast JavaScript and CSS bundler and minifier.
React is a JavaScript library for building user interfaces.
React package for working with the DOM.
Custom jest matchers to test the state of the DOM
Source maps support for istanbul
A robust polyfill for the `CSS.escape` utility method as defined in CSSOM.
Release history
16 releases in the last two years, typically about 18 days apart.
| Version | Published | Size | License |
|---|---|---|---|
| 30.5.1latest | 9 days ago | 52 KB | MIT |
| 30.5.0 | 13 days ago | 52 KB | MIT |
| 30.4.1 | 4 months ago | 46 KB | MIT |
| 30.4.0 | 4 months ago | 46 KB | MIT |
| 30.3.0 | 6 months ago | 45 KB | MIT |
| 30.2.0 | 11 months ago | 54 KB | MIT |
| 30.0.5 | 1 year ago | 54 KB | MIT |
| 30.0.2 | 1 year ago | 45 KB | MIT |
| 30.0.1 | 1 year ago | 45 KB | MIT |
| 30.0.0 | 1 year ago | 45 KB | MIT |
| 30.0.0-rc.1 | 1 year ago | 45 KB | MIT |
| 30.0.0-beta.8 | 1 year ago | 45 KB | MIT |
| 30.0.0-beta.7 | 1 year ago | 45 KB | MIT |
| 30.0.0-beta.6 | 1 year ago | 45 KB | MIT |
| 30.0.0-beta.3 | 1 year ago | 45 KB | MIT |
Overview
jest-mock is an npm package that **Note:** More details on user side API can be found in [Jest documentation](https://jestjs.io/docs/mock-function-api). It is extremely widely used, with about 62.9M downloads per week and 7 known dependents in the graph. The latest version is 30.5.1, released under the MIT license.
Who should use it
Teams working in the npm ecosystem who need **Note:** More details on user side API can be found in [Jest documentation](https://jestjs.io/docs/mock-function-api) and value a battle-tested, widely-adopted solution.
When not to use it
Consider an alternative if you need to or if a more actively-maintained option better fits your npm stack.
Pros
- Large, well-established user base (62.9M weekly downloads).
- Ships TypeScript type definitions.
- Clear open-source license (MIT).
Cons
- No significant drawbacks detected from available metadata.
Auto-generated from collected registry metadata. No external claims are inferred.
Frequently asked questions
Should I use jest-mock?
Yes — jest-mock scores well across adoption, maintenance, weight, supply chain, and licensing. 62.9M downloads per week and 7 known dependents. Last published 9 days ago. 16 releases in the last 2 years.
How do I install jest-mock?
Run `npm install jest-mock` to add jest-mock to your npm project.
How many dependencies does jest-mock have?
jest-mock declares 4 direct dependencies and pulls in 19 packages in total once its runtime tree is resolved totalling about 3.0 MB on disk.
What license is jest-mock released under?
jest-mock is distributed under the MIT license. Its dependency tree also includes: ISC, MIT.
How popular is jest-mock?
jest-mock has approximately 62,872,627 downloads per week and 7 known dependent packages.
Is jest-mock still maintained?
The most recent release of jest-mock (v30.5.1) was published 9 days ago.
Does jest-mock run install scripts?
No. jest-mock does not define preinstall, install, or postinstall scripts, so installing it does not execute publisher-supplied code.