Jest Testing
Expert Jest testing framework for JavaScript/TypeScript unit and integration testing
npx skills add a5c-ai/babysitter --skill jest-testing --agent claude-code
Same command for any agent — swap --agent for codex, cursor, copilot.
Weekly change comes from our own snapshots, not the repository page — it measures attention, not adoption.
# Jest Testing Skill ## Overview This skill provides expert-level capabilities for Jest-based testing, enabling comprehensive unit testing, snapshot testing, and integration with React Testing Library. ## Capabilities ### Test Execution - Configure Jest for various project types (Node, React, TypeScript) - Execute tests with coverage collection - Parallel test execution configuration - Watch mode and selective test running ### Unit Testing - Write unit tests with proper mocking - Configure custom matchers and test utilities - Mock module resolution and timer handling - Handle async testing patterns ### Snapshot Testing - Configure and manage snapshot tests - Handle snapshot updates and reviews - Implement inline snapshots ### Coverage Analysis - Coverage report generation and analysis - Configure coverage thresholds - Identify uncovered code paths ### React Integration - Integration with React Testing Library - Component testing patterns - Hook testing utilities ## Target Processes - `automation-framework.js` - Test framework setup - `mutation-testing.js` - Test quality assessment - `continuous-testing.js` - CI/CD integration - `shift-left-testing.js` - Early testing integration ##
- Overview
- Capabilities
- Test Execution
- Unit Testing
- Snapshot Testing
- Coverage Analysis
- React Integration
- Target Processes
- Dependencies
- Usage Example
- Configuration
What does the Jest Testing skill do?
Expert Jest testing framework for JavaScript/TypeScript unit and integration testing
How do I install it?
Run `npx skills add a5c-ai/babysitter --skill jest-testing --agent claude-code` — it drops the skill into your project so the agent can pick it up. Swap the --agent value for codex, cursor or copilot if you use one of those.
Where does this skill come from?
From a5c-ai/babysitter, a repository with 1,642 stars. We read it straight from the repository tree rather than a submitted listing, so what you see here is what is actually published.
Is a popular skill a good skill?
Not necessarily. Stars measure attention, not adoption — a repository can trend for a week and be abandoned. That is why we show the weekly change from our own snapshots next to the total, instead of a single flattering number.