Registry / testing / eslint-plugin-mysticatea

eslint-plugin-mysticatea

library4.2.4jsnpmunverified

Additional ESLint rules and configurations from Toru Nagashima. Current stable version 4.2.4 supports ESLint >= 3.1.0 and Node.js ^4.0.0 or >=6.0.0. Provides rules for blocking scope, instanceof checks, array detection, rest/spread patterns, and more. Package was renamed to @mysticatea/eslint-plugin after v5.0.0, with breaking changes dropping Node.js 4.x and ESLint 3.x/4.x. Notable for its curated set of rules and integrations with TypeScript and Vue.

testing

npm install eslint-plugin-mysticatea

github ↗package ↗

INSTALL

IMPORT

SIG · ESLINT-PLUGIN-MYST

eslint-plugin-mysticatea

testingjavascriptv4.2.4

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.

plugin (default)

✓ import plugin from 'eslint-plugin-mysticatea'

✗ const plugin = require('eslint-plugin-mysticatea')

ESM import works; CJS require also valid but prefer ESM

rules

✓ import { rules } from 'eslint-plugin-mysticatea'

✗ import { rules } from 'eslint-plugin-mysticatea/rules'

Directly import from package root

configs

✓ import { configs } from 'eslint-plugin-mysticatea'

✗ const configs = require('eslint-plugin-mysticatea').configs

Both ESM and CJS work

Shows how to install and use the plugin with a single rule in both flat and legacy ESLint configs.

// eslint.config.js (Flat config) import plugin from 'eslint-plugin-mysticatea'; export default [ { plugins: { mysticatea: plugin }, rules: { 'mysticatea/no-useless-rest-spread': 'error' } } ]; // or Legacy config (.eslintrc) // { // "plugins": ["mysticatea"], // "rules": { // "mysticatea/no-useless-rest-spread": "error" // } // }

Debug

Known issues

breakingPackage renamed to @mysticatea/eslint-plugin in v5.0.0, dropping support for Node.js 4.x and ESLint 3.x/4.x.

fix

Update package to @mysticatea/eslint-plugin and adjust imports/configs accordingly.

affects: >=5.0.0

breakingESLint flat config (eslint.config.js) not supported until later versions; legacy .eslintrc required for v4.x.

fix

Use legacy ESLint config format, or upgrade to v5+ with flat config support.

affects: <5.0.0

deprecatedv4.x is deprecated and will no longer receive updates due to package rename.

fix

Upgrade to @mysticatea/eslint-plugin (v5 or later).

affects: >=4.0.0 <5.0.0

gotchaRule 'no-useless-rest-spread' may not fix arrays with holes automatically (see v4.2.3 changelog).

fix

Manually review arrays with holes; the auto-fix changes behavior (e.g., [,,,1] vs [...[,,,],1]).

affects: >=4.2.3

Errors

Common errors & fixes

Error: Cannot find module 'eslint-plugin-mysticatea'

Package renamed to @mysticatea/eslint-plugin after v5.0.0.

fix

Run npm install @mysticatea/eslint-plugin --save-dev and update references.

ESLint configuration error: The plugin 'mysticatea' was not found.

Trying to use the plugin without proper installation or in flat config without specifying 'plugins'.

fix

Ensure the plugin is installed and added to plugins array in eslint.config.js.

TypeError: plugin.rules is undefined

Attempting to import rules incorrectly (e.g., requiring 'eslint-plugin-mysticatea/rules').

fix

Import directly: import { rules } from 'eslint-plugin-mysticatea'.

Upgrade

Version history

4.2.4latest on npm

Audit

Dependencies

eslintrequiredpeer dependency for ESLint plugin functionality

Agent activity

6 hits · last 30 days

node

Resources

githubhttps://github.com/mysticatea/eslint-plugin ↗

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