jest-esm-issues
CommunityResolve Jest ESM/CJS mismatches in tests quickly.
AuthorPeterCowling
Version1.0.0
Installs0
System Documentation
What problem does it solve?
This Skill solves Jest ESM/CJS compatibility issues in mixed-module codebases, reducing friction during test runs in monorepos.
Core Features & Use Cases
- Guided diagnostics for ESM/CJS errors in Jest.
- CJS-forcing workflow to normalize test execution across packages.
- Use Case: When tests fail with messages like Cannot use import statement outside a module, apply this Skill to switch to CJS mode and restore test execution.
Quick Start
Run the test suite with CJS forced: JEST_FORCE_CJS=1 pnpm --filter <pkg> test -- path/to/file.test.ts
Dependency Matrix
Required Modules
None requiredComponents
Standard package💻 Claude Code Installation
Recommended: Let Claude install automatically. Simply copy and paste the text below to Claude Code.
Please help me install this Skill: Name: jest-esm-issues Download link: https://github.com/PeterCowling/base-shop/archive/main.zip#jest-esm-issues Please download this .zip file, extract it, and install it in the .claude/skills/ directory.
Agent Skills Search Helper
Install a tiny helper to your Agent, search and equip skill from 223,000+ vetted skills library on demand.