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Testing Library

User-centric DOM testing utilities for React, Vue, Angular and Svelte that query like users do.

Workshop for building, documenting and testing UI components in isolation.

Pure-JS implementation of web standards used as the default simulated DOM for Jest and Vitest tests.

Fast JavaScript DOM implementation, a lighter and quicker alternative to jsdom for unit tests.

Head to head

Metric	Testing Library	Storybook	jsdom	happy-dom
Stars	19.7k	91.5k	21.7k	4.7k
Weekly downloads	92.8M	35.5M	155M	33.6M
Download growth	+45%	+37%	+38%	+93%
Popularity score	89/100	92/100	91/100	81/100
Forks	1.2k	10.5k	1.8k	375
Open issues	86	1.8k	239	564
Last commit	2mo ago	today	5d ago	1w ago
Latest version	16.3.3	10.6.7	31.0.0	21.0.4
License	MIT	MIT	n/a	MIT
First released	2018	2016	2010	2019
Signals	Popular	Popular	Popular	Trending (detected automatically)Rising
Listed in	Frontend › Frontend Testing Testing & QA › Component & UI Testing	Frontend › Frontend Testing Testing & QA › Component & UI Testing	Testing & QA › Component & UI Testing	Testing & QA › Component & UI Testing

Weekly downloads over time

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Testing Library
Storybook
jsdom
happy-dom