eslint-config-jest-enzyme

7.1.2 verified Sat Apr 25 auth: no javascript maintenance

ESLint shareable config for jest-environment-enzyme globals. Current version 7.1.2, released August 2020. This package is part of the enzyme-matchers monorepo from Formidable Labs. It defines Jest and Enzyme global variables (e.g., mount, shallow, render) to prevent ESLint warnings when using jest-environment-enzyme. Only useful in combination with that environment. Low maintenance cadence; no major changes after v7.0.0.

Common errors

error Error: Cannot find module 'eslint-config-jest-enzyme' ↓

cause Missing dependency.

fix

Run npm install eslint-config-jest-enzyme --save-dev

error Definition for rule 'jest-enzyme' was not found ↓

cause Extending 'jest-enzyme' without also installing the jest-enzyme plugin.

fix

Install eslint-plugin-jest-enzyme or ensure the correct extends value.

Warnings

breaking v7.0.0: toHaveTagName renamed to toHaveDisplayName ↓

fix Replace all uses of toHaveTagName with toHaveDisplayName.

deprecated Package is in maintenance mode with no active development ↓

fix Consider migrating to @testing-library/jest-dom or custom ESLint rules.

gotcha ESLint config only applies to test files ending in *.test.js ↓

fix Ensure test files match the pattern or override overrides in config.

Install

npm install eslint-config-jest-enzyme

yarn add eslint-config-jest-enzyme

pnpm add eslint-config-jest-enzyme

Imports

extends
wrong
```
{
  "extends": ["eslint-config-jest-enzyme"]
}
```
correct
```
{
  "extends": ["jest-enzyme"]
}
```
The preset is referenced as 'jest-enzyme', not the full npm package name.
jest-enzyme globals
wrong
```
/* global mount, shallow */
```
correct
```
/* eslint-env jest-enzyme/globals */
```
Use the environment-specific directive to enable globals per file.

env

wrong

{
  "env": {
    "jest": true
  }
}

correct

{
  "env": {
    "jest-enzyme/globals": true
  }
}

Setting 'jest' env alone does not include enzyme globals; use the jest-enzyme environment.

Quickstart

Configures ESLint to acknowledge jest-environment-enzyme globals like mount, shallow, render.

// .eslintrc.js
module.exports = {
  extends: ['jest-enzyme'],
  env: {
    'jest-enzyme/globals': true,
  },
  rules: {},
};