nyc VS jest

Compare nyc vs jest and see what are their differences.

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nyc jest
16 471
5,512 43,425
0.4% 0.4%
0.0 9.6
about 1 month ago 7 days ago
JavaScript TypeScript
ISC License MIT License
The number of mentions indicates the total number of mentions that we've tracked plus the number of user suggested alternatives.
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.

nyc

Posts with mentions or reviews of nyc. We have used some of these posts to build our list of alternatives and similar projects. The last one was on 2023-12-14.
  • Migrating from Jest to Vitest for your React Application
    16 projects | dev.to | 14 Dec 2023
    Native code coverage via v8 or istanbul.
  • Testing Vue components the right way
    2 projects | dev.to | 6 Feb 2023
    Writing tests is essential, and knowing whether you test all the required cases for your logic is even more critical. The most common testing coverage tool is Istanbul, where you can see how well your tests exercise your code by lines, functions, and branches. Below is an example of how the test coverage report looks in your terminal:
  • Don't target 100% coverage
    3 projects | dev.to | 19 Jan 2023
    Here is a quote from istanbul, one of the most used code coverage tool:
  • Unit testing like a Hacker
    6 projects | dev.to | 28 Oct 2022
    Unit testing framework was already implemented, using Vitest so I started hacking by setting up a coverage provider to explicitly identify the covered/uncovered lines and mentioned this to the maintainer in the comments. I used Istanbul 🇹🇷 for this purpose.
  • Auto-Publish Your Test Coverage Report on GitHub Pages
    2 projects | dev.to | 28 Oct 2022
    Your project probably has a coverage report. If you’re using Jest as your unit test runner, generating a coverage report is embedded in it. It is done with Istanbul under the hood, which generates a nice HTML page presenting the entire project unit test coverage.
  • Dear Linux, Privileged Ports Must Die
    2 projects | news.ycombinator.com | 31 Aug 2022
    > This is a rant written by someone with just enough understanding to be dangerous, but not quite enough wisdom to know why things are still the way they are. Most of the complaints raised are subtly inaccurate.

    Author seems aware of CAP_NET_BIND_SERVICE: https://source.small-tech.org/site.js/app/-/issues/169 and https://github.com/istanbuljs/nyc/issues/1281 – the "side effects" are NodeJS explicitly checking for it, so that's a NodeJS thing and not a Linux thing.

    Yet curiously it's completely unmentioned in this article, in spite that this is probably what started the author's dislike of privileged ports. I guess it was inconvenient as it got in the way of angrily ranting.

  • Comprehensive coverage Jest+Playwright in Next.js TS
    7 projects | dev.to | 29 Jun 2022
    This approach will create two json coverage files, which will be merged together by NYC. Therefore the results will be purely local. If You don't mind using online tools like Codecov or Coveralls for merging data from different tests, then go ahead and use them. They will probably also be more accurate. But if You still want to learn how to get coverage from E2E, then please read through
  • When developing in React, what do you find most frustrating or cumbersome?
    3 projects | /r/reactjs | 14 Mar 2022
    https://istanbul.js.org/ measures how much of your code is covered by tests
  • Production Ready React
    3 projects | dev.to | 18 Jan 2022
    Jest uses a package called Istanbul to provide test coverage metrics such as statement, branch, function, and line coverage so that you can understand and enforce the quality of your test suite, providing more confidence in releases.
  • Aggregating Unit Test Coverage for All Monorepo’s Packages
    3 projects | dev.to | 31 Dec 2021
    So let’s see if nyc (the code coverage generator) can help with that. Hmm… this documentation seems interesting! So basically what I understand from it is that I need to collect all the reports from the different packages and then run the nyc report over it. The flow should be like this:

jest

Posts with mentions or reviews of jest. We have used some of these posts to build our list of alternatives and similar projects. The last one was on 2024-03-03.
  • JS Toolbox 2024: Bundlers and Test Frameworks
    10 projects | dev.to | 3 Mar 2024
    Jest, created and maintained by Facebook, is a JavaScript testing framework with a focus on simplicity. It is often recognized for its zero-configuration setup and seamless integration, especially with React applications, making it a favored choice for developers in both small-scale projects and large enterprise applications.
  • Unit Testing Expo Apps With Jest
    7 projects | dev.to | 20 Feb 2024
    console.error Jest encountered an unexpected token Jest failed to parse a file. This happens e.g. when your code or its dependencies use non-standard JavaScript syntax, or when Jest is not configured to support such syntax. Out of the box Jest supports Babel, which will be used to transform your files into valid JS based on your Babel configuration. By default "node\_modules" folder is ignored by transformers. Here's what you can do: • If you are trying to use ECMAScript Modules, see https://jestjs.io/docs/ecmascript-modules for how to enable it. • If you are trying to use TypeScript, see https://jestjs.io/docs/getting-started#using-typescript • To have some of your "node\_modules" files transformed, you can specify a custom "transformIgnorePatterns" in your config. • If you need a custom transformation specify a "transform" option in your config. • If you simply want to mock your non-JS modules (e.g. binary assets) you can stub them out with the "moduleNameMapper" config option. You'll find more details and examples of these config options in the docs: https://jestjs.io/docs/configuration For information about custom transformations, see: https://jestjs.io/docs/code-transformation
  • Easily create mock data for unit tests 🧪
    2 projects | dev.to | 15 Feb 2024
    Note: I will be using Jest as testing framework throughout the examples.
  • Painless CLI integration testing
    7 projects | dev.to | 10 Jan 2024
    We use Jest Framework for testing. Jest is not a dogma, and, of course, in its place can be any other test runner, such as Mocha or Ava. Let's focus on tests. I'll provide a short example because I don’t want to waste your time. You can find the full version here. It's crucial to read the comments in the code below. Let's go!
  • What is integration testing in UI/Front End?
    2 projects | dev.to | 7 Jan 2024
    Jest has long been my favorite got to test runner when it comes to UI unit and integration testing. With tools like React Testing Library (Testing Library framework for React) you get the benefit of very easy to write and maintain tests, as well as a quick and efficient way to run our tests.
  • 13 best React debugging tools
    4 projects | dev.to | 3 Jan 2024
    Jest is a well-regarded JavaScript testing framework primarily designed for React applications, although its utility extends to projects using Babel, JavaScript, Node, Angular, and Vue. Created by Facebook, Jest emphasizes ensuring the correctness of JavaScript codebases. It allows developers to write tests with a familiar, feature-rich API, making the testing process swift and enjoyable​​.
  • Dissecting the hell that is Jest setup with ESM and Typescript
    2 projects | dev.to | 31 Dec 2023
    SimenB. "Support ESM versions of all pluggable modules" Mar 7, 2021
  • Migrating from Jest to Vitest for your React Application
    16 projects | dev.to | 14 Dec 2023
    Are you looking to migrate from Jest to Vitest for your React application? Look no further.
  • DweebUI v0.07 - A simple Docker web interface.
    3 projects | /r/selfhosted | 9 Dec 2023
    I am referring to code tests--for javascript I use https://jestjs.io/
  • 💻 7 Open-Source DevTools That Save Time You Didn't Know to Exist ⌛🚀
    8 projects | dev.to | 6 Dec 2023
    🌟 Support on GitHub Website: https://jestjs.io/

What are some alternatives?

When comparing nyc and jest you can also consider the following projects:

tap - Test Anything Protocol tools for node

vitest - Next generation testing framework powered by Vite.

Cucumber.js - Cucumber for JavaScript

Sinon.JS - Test spies, stubs and mocks for JavaScript.

WebdriverIO - Next-gen browser and mobile automation test framework for Node.js

ava - Node.js test runner that lets you develop with confidence 🚀

nightwatch - Integrated end-to-end testing framework written in Node.js and using W3C Webdriver API. Developed at @browserstack

istanbul - Yet another JS code coverage tool that computes statement, line, function and branch coverage with module loader hooks to transparently add coverage when running tests. Supports all JS coverage use cases including unit tests, server side functional tests and browser tests. Built for scale.

mocha - ☕️ simple, flexible, fun javascript test framework for node.js & the browser

Cypress - Fast, easy and reliable testing for anything that runs in a browser.

Protractor - E2E test framework for Angular apps

Playwright - Playwright is a framework for Web Testing and Automation. It allows testing Chromium, Firefox and WebKit with a single API.