Registry / testing / eslint-plugin-case-police

eslint-plugin-case-police

library2.2.1jsnpmunverified

ESLint plugin that enforces correct casing of brand names, technologies, and terms (e.g., 'GitHub', 'npm', 'TypeScript') by linting against a curated dictionary. Version 2.2.1 is current; requires ESLint ^9.9.0 or ^10.0.0. Uses flat config (ESLint 9+). Maintained by Anthony Fu with regular updates to dictionary entries. Differentiates from style linting rules by focusing exclusively on known proper nouns.

testing

npm install eslint-plugin-case-police

github ↗package ↗

INSTALL

IMPORT

SIG · ESLINT-PLUGIN-CASE

eslint-plugin-case-police

testingjavascriptv2.2.1

Install

—

Import

—

Disk

—

Pass rate

0/ 6

Env Coverage0 / 6

glibc

18–22

musl

18–22

Install & Compatibility

Where this runs

tested against v? · npm install

Install × environment matrix

Each cell = how many times install + import succeeded across repeated harness runs. Partial = flaky.
glibc = Debian/Ubuntu slim · musl = Alpine Linux

musl

node 18–226 runs

build_error

glibc

node 18–226 runs

build_error

Code

Verified usage

Verified import paths — ran on the pinned version, not inferred.

default

✓ import casePolice from 'eslint-plugin-case-police'

✗ const casePolice = require('eslint-plugin-case-police')

ESM-only since v2; CommonJS require works but is not recommended.

plugin

✓ import casePolice from 'eslint-plugin-case-police'

✗ import { casePolice } from 'eslint-plugin-case-police'

Default export is the plugin object; named export does not exist.

rule in flat config

✓ plugins: { 'case-police': casePolice }, rules: { 'case-police/no-case-police': 'error' }

✗ rules: { 'case-police/no-case-police': 'error' } without plugins

Must register plugin in flat config; ESLint 9+.

Configure ESLint flat config to lint for incorrect casing of brand names and terms.

// eslint.config.js import casePolice from 'eslint-plugin-case-police'; export default [ { plugins: { 'case-police': casePolice, }, rules: { 'case-police/no-case-police': 'error', }, }, ];

Debug

Known issues

breakingV2.0.0 drops support for .eslintrc config; requires flat config (ESLint 9+).

fix

Migrate to flat config (eslint.config.js).

affects: >=2.0.0

breakingV0.7.0 drops support for ESLint <9.

fix

Upgrade ESLint to version 9 or later.

affects: >=0.7.0

gotchaPlugin only checks tokens against known dictionary; does not enforce arbitrary capitalization.

fix

Extend dictionary if needed via `case-police` package or wait for upstream updates.

affects: all

Errors

Common errors & fixes

Error: Failed to load plugin 'case-police' declared in 'plugins': Cannot find module 'eslint-plugin-case-police'

Missing or incorrect plugin import in flat config.

fix

Ensure you have installed the package and imported it correctly: `import casePolice from 'eslint-plugin-case-police'`

Configuration for rule 'case-police/no-case-police' is invalid

Using .eslintrc config instead of flat config.

fix

Switch to eslint.config.js with plugins object.

TypeError: Cannot read properties of undefined (reading 'getFilename')

Plugin expects ESLint 10+ compatibility fix; ensure v2.2.0+ is installed.

fix

Update to eslint-plugin-case-police@2.2.0 or later.

Upgrade

Version history

2.2.1latest on npm

Audit

Dependencies

eslintrequiredpeer dependency; plugin requires ESLint ^9.9.0 or ^10.0.0

Agent activity

2 hits · last 30 days

node

Resources

githubhttps://github.com/antfu/case-police ↗

packagehttps://www.npmjs.com/package/eslint-plugin-case-police ↗