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javascript-typescript-jestby GitHubDevelopmentGitHub stars: 40.4k

JavaScript TypeScript Jest skill: what it does and how to install it

Guides JavaScript and TypeScript testing with Jest, covering test structure, mocks, async code, snapshots and React components.

Summary generated from the skill's documentation.

Install

$ npx skills add github/awesome-copilot --skill javascript-typescript-jest

Run it in a terminal. If your agent is already running, start a new session so it picks the skill up.

About this skill

What it does. Provides Jest practices for organising test files and naming cases, mocking dependencies, testing promises, using snapshots and choosing matchers. For React components, it recommends React Testing Library, accessible queries and realistic user interactions.

When to use it. When writing or reviewing JavaScript or TypeScript tests with Jest, including tests for React components.

History

Repo stars

40.4k+707 since 5 Oct 2026

Stars are counted for the whole repository, which holds 80 skills.

Show as a table
Repo stars by day
DateRepo stars
26 Oct 202640,426
25 Oct 202640,385
24 Oct 202640,365
23 Oct 202640,341
22 Oct 202640,302
21 Oct 202640,260
20 Oct 202640,214
19 Oct 202640,178
18 Oct 202640,143
17 Oct 202640,111
16 Oct 202640,072
15 Oct 202640,038
14 Oct 202639,999
13 Oct 202639,981
12 Oct 202639,948
11 Oct 202639,904
10 Oct 202639,881
9 Oct 202639,845
8 Oct 202639,804
7 Oct 202639,761
6 Oct 202639,731
5 Oct 202639,719

Installs

13.2k+43 since 19 Oct 2026

Installs via skills.sh

Show as a table
Installs by day
DateInstalls
26 Oct 202613,179
25 Oct 202613,174
24 Oct 202613,172
23 Oct 202613,163
22 Oct 202613,154
21 Oct 202613,146
20 Oct 202613,140
19 Oct 202613,136

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