Should you use jest as a testing library?

• jest

  3 42,329 9.6 TypeScript

  Discontinued Delightful JavaScript Testing. [Moved to: https://github.com/jestjs/jest] (by facebook)

  

This means that the instanceof operator will not workas expected, and it will generate false negatives! You can get a quick example of this problem in the following test.js snippet file:

• fastify

  124 30,574 9.4 JavaScript

  Fast and low overhead web framework, for Node.js

  

For example, Fastify removed the instanceof operatorfrom its codebase because it was causing problems for those developers that rely on jest as a testing framework.

• SurveyJS

  surveyjs.io sponsored

  Open-Source JSON Form Builder to Create Dynamic Forms Right in Your App. With SurveyJS form UI libraries, you can build and style forms in a fully-integrated drag & drop form builder, render them in your JS app, and store form submission data in any backend, inc. PHP, ASP.NET Core, and Node.js.

  

• jest

  473 43,581 9.5 TypeScript

  Delightful JavaScript Testing.

  

jest, the popular testing framework created by Facebook with over 50 million downloads per month, causes many problems for backend developers.

• node

  924 103,799 9.9 JavaScript

  Node.js JavaScript runtime ✨🐢🚀✨

  

You can't out of the box. There is an open issue on the Node.js repositoryto let the node:vm module to use the vm's context, but it is still open. It seems that the Node.js core team is interested in fixing this problem by implementing the new ShadowRealm spec, and I think we will make some progress during 2023.

• proposal-shadowrealm

  19 1,376 6.0 HTML

  ECMAScript Proposal, specs, and reference implementation for Realms

  

You can't out of the box. There is an open issue on the Node.js repositoryto let the node:vm module to use the vm's context, but it is still open. It seems that the Node.js core team is interested in fixing this problem by implementing the new ShadowRealm spec, and I think we will make some progress during 2023.

• blog-posts

  2 17 4.3 JavaScript

  A collection of my Fastify blog posts! (by Eomm)

Now jump into this article source codeto try the code snippets I wrote to verify my findings.

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