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eslint-docs

Enseña las prácticas actuales de ESLint 10 extraídas de la documentación oficial. Útil al escribir, revisar o corregir un eslint.config.js (flat config, defineConfig, files, ignores, globalIgnores, extends, languageOptions, globals, parsers, processors), configurar reglas y severidades de ESLint, comentarios de desactivación y configuración en línea, ejecutar la CLI en CI (--fix, --cache, --quiet, --max-warnings, supresiones masivas, formateadores, flags características, servidor MCP), escribir reglas personalizadas (meta, schema, fixes, suggestions, selectors, scope, code paths) y probarlas con RuleTester, crear plugins, configuraciones compartibles, parsers, procesadores o formateadores personalizados, usar la API de Node.js (ESLint, Linter), o migrar a ESLint 9 o 10 desde eslintrc. Se activa con eslint, eslint.config.js, flat config, .eslintrc, .eslintignore, @eslint/js, js/recommended, eslint-disable, no-unused-vars, no-restricted-imports, no-restricted-syntax, RuleTester, eslint-plugin, eslint-config, FlatCompat, context.getScope is not a function, ESLint 10.

¿Qué es eslint-docs?

Esta skill proporciona una guía completa y actualizada sobre ESLint 10 (versión 10.14.0), basada directamente en su documentación oficial. Su objetivo es aclarar las diferencias clave con versiones anteriores, como los pitfalls de la flat config, los valores predeterminados sorprendentes, las API eliminadas y los patrones recomendados. Es útil para cualquier desarrollador que trabaje con ESLint 10, ya sea configurando reglas, escribiendo reglas personalizadas, integrando ESLint en CI, o migrando desde eslintrc. La skill cubre todos los aspectos relevantes: configuración (eslint.config.js, defineConfig, globalIgnores), reglas y comentarios en línea, uso de la CLI (--fix, --cache, --quiet, --max-warnings, supresiones masivas, formateadores), creación de reglas personalizadas (meta, schema, fixes, suggestions, selectors, scope, code paths) y su prueba con RuleTester, plugins, configuraciones compartibles, parsers, procesadores y formateadores, así como la API de Node.js (ESLint, Linter). También incluye referencias detalladas para la migración desde eslintrc a la flat config y los cambios importantes de ESLint 9 y 10. La skill se organiza con reglas rápidas para los errores más comunes y una tabla de archivos de referencia para tareas específicas, garantizando que el usuario tenga acceso a la información más precisa y relevante.

Compatible con~Claude Code~Codex CLI~Cursor
npx skills add https://github.com/quentin-autret/claude-skills/tree/main/skills/eslint-docs

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Documentación

ESLint 10

Esta skill cubre ESLint 10.14.0 según está documentado en https://eslint.org/docs/latest/. Contiene lo que difiere de la costumbre: problemas de la flat config, valores predeterminados sorprendentes, API eliminadas y los patrones que recomiendan los documentos. Cada afirmación en los archivos de referencia termina con la página de donde proviene.

Cómo navegar

  1. Lee las reglas rápidas a continuación. Capturan los errores más frecuentes.
  2. Abre el archivo de referencia que coincida con la tarea, desde la tabla al final.
  3. Cuando el código use .eslintrc, env, context.getScope() o FlatESLint, lee primero references/migration.md.

Inicio rápido

npm init @eslint/config@latest
// eslint.config.js
import js from "@eslint/js";
import globals from "globals";
import { defineConfig, globalIgnores } from "eslint/config";

export default defineConfig([
  globalIgnores(["dist/"]),
  {
    files: ["**/*.js", "**/*.mjs", "**/*.cjs"],
    plugins: { js },
    extends: ["js/recommended"],
    languageOptions: { globals: { ...globals.browser } },
    rules: { "no-unused-vars": "warn" },
  },
]);

https://eslint.org/docs/latest/use/getting-started , https://eslint.org/docs/latest/use/configure/configuration-files

Reglas rápidas

Archivos de configuración

Reglas y comentarios

CLI y CI

Reglas personalizadas e integraciones

Patrones antiguos

AntiguoActual
.eslintrc.*, eslintConfig en package.jsoneslint.config.js con defineConfig()
"extends": "eslint:recommended"extends: ["js/recommended"] con plugins: { js }
env, /* eslint-env */languageOptions.globals, /* global */
.eslintignore, --ignore-pathglobalIgnores(), includeIgnoreFile()
overridesMás objetos de configuración con files
--rulesdir, linter.defineRule()Plugin en línea plugins: { local: { rules } }
--no-eslintrc--no-config-lookup
context.getScope(), context.getSourceCode()sourceCode.getScope(node), context.sourceCode
Reglas con estilo de función{ meta, create }
FlatESLint, LegacyESLint, FlatRuleTesterESLint, RuleTester
require-jsdoc, valid-jsdoceslint-plugin-jsdoc

Detalles y listas completas: references/migration.md.

Archivos de referencia

ArchivoLéelo para
references/configuration.mdNombres y búsqueda de archivos de configuración, configuraciones TypeScript, claves de objetos de configuración, coincidencia de files, extends, opciones de lenguaje, globales, parsers, procesadores, lenguajes, depuración
references/ignoring-files.mdignores globales y no globales, ignorados por defecto, archivos con punto, recetas para des-ignorar, importación de .gitignore
references/rules-and-inline-config.mdSeveridades, fusión de opciones, comentarios de configuración en línea, directivas de desactivación, linterOptions, correcciones frente a sugerencias, correcciones circulares
references/cli.mdGlobs, --fix, códigos de salida, --quiet, formateadores, caché, supresiones masivas, flags de características, concurrencia, servidor MCP
references/migration.mdCambios importantes de ESLint 9 y 10, codemods, de eslintrc a flat config, opciones de reglas cambiadas, plugins rotos
references/custom-rules.mdmeta de reglas, reglas locales, context.report, correcciones, sugerencias, meta.schema, meta.defaultOptions, desaprobación, métodos context eliminados
references/ast-scope-code-paths.mdSelectores, métodos de SourceCode, ámbitos, objetos del gestor de ámbitos, eventos de rutas de código, perfilado
references/testing-rules.mdValores predeterminados de RuleTester, casos válidos e inválidos, afirmaciones de correcciones y sugerencias, comprobaciones estrictas, enlaces de framework
references/plugins-and-shareable-configs.mdObjeto plugin y meta, configuraciones de plugin, publicación, configuraciones compartibles, parsers personalizados, procesadores, lenguajes, formateadores
references/nodejs-api.mdOpciones y métodos de ESLint, lintText, outputFixes, loadFormatter, LintResult, Linter, SourceCode
references/core-rules-problems.mdReglas que cubre TypeScript, variables no utilizadas y no declaradas, sombreado, condiciones, errores asíncronos, trampas de regex
references/core-rules-restrictions.mdno-restricted-imports, -globals, -properties, -exports, recetas de no-restricted-syntax, otras prohibiciones, límites de tamaño y complejidad
references/core-rules-style.mdValores predeterminados de reglas de sugerencia, valores predeterminados de reglas de diseño, reglas eliminadas, opciones desaprobadas

Páginas rastreadas: SOURCES.md.

Individual skills in this repo

This repo contains 16 individual skills — each has its own dedicated page.

grafana-cloud-docs

Grafana Cloud pitfalls, defaults, limits and current patterns from the Grafana, Mimir, Loki and Tempo docs, each tied to its docs URL. Use when sending OpenTelemetry data to Grafana Cloud, writing PromQL, LogQL or TraceQL, controlling cardinality and cost, designing alert rules, routing notifications, provisioning alerting, building Synthetic Monitoring checks, using the /apis dashboard API, choosing access policy tokens or service accounts, or migrating off API keys, the Loki Exporter and legacy /api routes.

javascript-docs

Teaches current JavaScript (ECMAScript) practice drawn from the MDN JavaScript documentation. Use when writing, reviewing or fixing modern JavaScript, choosing a built-in API, or replacing a deprecated pattern. Covers equality and coercion, let/const and the temporal dead zone, strict mode, ASI, functions, classes and private fields, objects, prototypes, Proxy, Reflect, Symbol, eval, operators (??, ?., spread, BigInt arithmetic), statements, Promise, async/await, Promise.try, iterators and iterator helpers, generators, using/await using, DisposableStack, WeakRef, Array (toSorted, at, groupBy, fromAsync), Map, Set methods, WeakMap, strings and Unicode, encodeURIComponent, RegExp (v flag, RegExp.escape, lastIndex), Number, Math, BigInt, JSON (rawJSON, revivers), typed arrays, ArrayBuffer, base64, SharedArrayBuffer, Atomics, Temporal, Date, Intl (DateTimeFormat, NumberFormat, Collator, Segmenter, PluralRules), errors (cause, Error.isError), ES modules, import attributes, import.meta, dynamic import.

next-intl-docs

Teaches current next-intl 4 practices for internationalizing Next.js apps, drawn from the official documentation. Use when setting up next-intl with the App Router, writing i18n/request.ts, adding a [locale] segment with defineRouting, createMiddleware in proxy.ts (formerly middleware.ts), building locale switchers with createNavigation, translating with useTranslations or getTranslations, passing messages to NextIntlClientProvider, writing ICU messages (plurals, select, rich text), formatting dates, numbers and lists with useFormatter, translating metadata, Server Actions, Route Handlers, localized 404 and error pages, static rendering with next/root-params, type-safe messages through AppConfig, testing with Jest, Vitest, Storybook, or extracting inline messages with useExtracted. Triggers on next-intl, useTranslations, getTranslations, NextIntlClientProvider, getRequestConfig, i18n routing, locale prefix, localePrefix, NEXT_LOCALE, hreflang, setRequestLocale, ICU messages, App Router internationalization.

nodejs-docs

Teaches Node.js practice drawn from the official Node.js API documentation, with pitfalls, surprising defaults, deprecations and replacements, each backed by its nodejs.org URL. Use when writing, reviewing, debugging or upgrading Node.js code, or choosing a built-in module (fs, crypto, streams, http, process, CLI flags, node:test, ESM/CommonJS, package.json exports, TypeScript type stripping, child_process, worker_threads, node:sqlite, deprecations).

playwright-docs

Pitfalls, surprising defaults and recommended patterns of Playwright Test for JavaScript and TypeScript, distilled from the official docs. Use when writing, reviewing, debugging or configuring Playwright tests (@playwright/test, playwright.config.ts, npx playwright test), including flaky tests, locators (getByRole, filter, strict mode), web-first assertions (expect, toHaveText, toBeVisible, expect.poll, toPass), fixtures, storageState authentication, project dependencies, timeouts, retries, network mocking (page.route, routeFromHAR, routeWebSocket), API testing, clock, aria snapshots, toHaveScreenshot, axe accessibility scans, traces, UI mode, reporters, CI, Docker, sharding, test locks, component testing with stories and mount, codegen, Playwright MCP, playwright-cli and migration from Puppeteer, Protractor, Testing Library or older Playwright versions.

postgresql-docs

Pitfalls, surprising defaults, PostgreSQL 18 changes and recommended patterns from the official PostgreSQL 18 documentation, each backed by its postgresql.org URL. Use when writing or reviewing PostgreSQL SQL, schema design, migrations and ALTER TABLE locks, indexes, transactions, isolation levels and retries, locking, upsert and MERGE, COPY, JSONB, timestamptz, generated and identity columns, partitioning, EXPLAIN, vacuum, roles, row-level security, PL/pgSQL, full-text search, connection settings, and upgrades to PostgreSQL 18.

react-docs

Writes, reviews and upgrades React 19.3 code from the official react.dev documentation. Use when writing components and Hooks, removing unnecessary useEffect calls, fixing Effect dependencies with useEffectEvent, building forms with Actions (useActionState, useOptimistic, useFormStatus, form action), using Server Components, 'use client', 'use server' and Server Functions, Suspense, use(), useTransition, useDeferredValue, ViewTransition, Activity, adopting React Compiler and eslint-plugin-react-hooks, deciding on useMemo, useCallback and memo, server rendering and hydration (createRoot, hydrateRoot, renderToPipeableStream, prerender), or migrating from React 18 (forwardRef, Context.Provider, ReactDOM.render, propTypes, defaultProps). Triggers on React, JSX, hooks, useState, useEffect, useRef, useContext, Server Components, RSC, Actions, React Compiler, Strict Mode, hydration mismatch, React 19 upgrade.

rust-std-docs

Gives current guidance from the official Rust standard library docs (std 1.99.1 stable) on pitfalls, panics, platform differences, discouraged APIs and newer stable replacements. Use when writing, reviewing or refactoring Rust code that uses std, especially collections (Vec, HashMap, BTreeMap, BinaryHeap, entry, extract_if, sort), Option/Result/error handling (expect, ?, Error, ExitCode, panic), iterators (collect, flatten, Peekable, try_fold), Box/Rc/RefCell/Cow/Pin/mem::take, Arc/Mutex/RwLock/OnceLock/LazyLock/thread::scope/mpsc/Condvar/atomics, String/str/fmt/format!/OsString/CString, io/fs/path (BufWriter, OpenOptions, PathBuf::join), process/env/net/time (Command, set_var, TcpStream, Instant, Duration), From/TryFrom/AsRef/Ord/Drop/Deref/Clone, and unsafe raw pointers, MaybeUninit, transmute, NonNull or integer overflow and float ordering.

socketio-docs

Builds, configures and debugs Socket.IO 4.8 servers and clients from the official Socket.IO v4 documentation. Use when writing a Node.js Socket.IO server (Express, Fastify, Koa, Bun, uWebSockets.js) or a socket.io-client app, emitting events with acknowledgements, timeout() and emitWithAck, broadcasting to rooms and namespaces, authenticating in middleware with the auth option, configuring CORS, reverse proxies and sticky sessions, scaling with the Redis, Redis Streams, Postgres, MongoDB or Cluster adapter, enabling connection state recovery and delivery guarantees, tuning reconnection, writing tests, troubleshooting connection issues, or migrating from Socket.IO v2 or v3. Triggers on Socket.IO, socket.io, socket.io-client, io(), new Server, emit, emitWithAck, acknowledgements, rooms, namespaces, broadcast, io.use, middleware, CORS, Redis adapter, sticky sessions, connection state recovery, reconnection, connect_error, Session ID unknown. Not for plain WebSocket servers such as ws without Socket.IO.

tailwindcss-docs

Teaches current Tailwind CSS v4 practices drawn from the official documentation. Use for any task that touches Tailwind CSS v4, even a small one, because many v3 habits silently break in v4. Use when writing or reviewing Tailwind CSS v4 code (utility classes, variants, arbitrary values, theme variables in @theme, @utility, @custom-variant, @apply, @reference, @source), setting up Tailwind in a framework or build tool (Vite plugin, PostCSS plugin, CLI, Next.js, SvelteKit, Nuxt, Angular, Laravel, Rails), customizing the theme (colors, fonts, breakpoints, spacing, animations), building dark mode with a class or data attribute, or migrating a project from Tailwind v3 (tailwind.config.js, @tailwind directives, darkMode class, safelist, bg-opacity, renamed shadow and outline utilities). Triggers on tailwindcss, @import "tailwindcss", @tailwindcss/vite, @tailwindcss/postcss, @tailwindcss/cli, @theme, @custom-variant dark, npx @tailwindcss/upgrade, upgrade to Tailwind v4.

tauri-docs

Tauri 2 apps, tauri.conf.json, capabilities and permissions, commands and invoke, events and channels, plugins, bundling, signing and the updater, migration from Tauri 1. Guides Tauri 2 work from the official v2 documentation, including scopes, managed state, plugin authoring, CSP and the isolation pattern, testing and debugging, Linux, Windows and macOS packages, and mobile and store releases. Use when writing or reviewing a Tauri 2 app, adding a plugin or a capability, fixing a "not allowed" or "forbidden path" error, wiring IPC between Rust and the webview, packaging, signing or publishing a desktop or mobile build, or upgrading a Tauri 1 or 2.0 beta project.

tokio-docs

Gives current guidance from the official tokio documentation (tokio 1.54.1) on async Rust pitfalls, cancel safety, blocking code, surprising defaults and deprecated APIs. Use when writing, reviewing or debugging async Rust code that uses tokio, especially the runtime (#[tokio::main], #[tokio::test], Builder, enable_all, block_on, current_thread, LocalRuntime, shutdown, feature flags), tasks (spawn, JoinHandle, JoinSet, abort, spawn_blocking, block_in_place, LocalSet, spawn_local, task_local), select!, join!, try_join!, cancellation and graceful shutdown, sync primitives (Mutex across .await, RwLock, Semaphore, Notify, OnceCell), channels (mpsc backpressure, oneshot, broadcast lag, watch), time (sleep, interval, MissedTickBehavior, timeout, paused time, start_paused), I/O and networking (AsyncReadExt, BufWriter flush, split, io::copy, framing, TcpListener, TcpStream, UdpSocket), tokio::fs, process (Command, kill_on_drop, Child), signals (ctrl_c, Windows console events) and Windows named pipes.

typescript-docs

Configures, writes and upgrades TypeScript 6.0 code and tsconfig.json from the official TypeScript documentation. Use when upgrading from TypeScript 5.x to 6.0 (strict, types, rootDir, baseUrl, moduleResolution node, target es5, outFile, esModuleInterop), choosing module and moduleResolution, writing package.json exports and imports, fixing ESM and CommonJS interop, enabling verbatimModuleSyntax or erasableSyntaxOnly, setting up project references and tsc --build, writing .d.ts files, checking JavaScript with JSDoc, or debugging narrowing, generics, mapped types, decorators and enums. Triggers on TypeScript, tsc, tsconfig, TS5112, ignoreDeprecations, nodenext, bundler, .d.ts, @ts-check, TypeScript 6 upgrade.

typesense-docs

Pitfalls, surprising defaults and recommended patterns of the Typesense search engine, distilled from the official docs. Use when designing a Typesense collection schema, writing search parameters (q, query_by, filter_by, sort_by, facet_by, group_by), tuning typo tolerance and ranking, building vector, semantic or hybrid search, conversational RAG or natural language search, creating API keys and scoped search keys for multi-tenancy, indexing and import (JSONL, upsert, emplace, dirty_values), syncing from a primary database, reindexing through aliases, managing synonyms (synonym sets), curation sets and stopwords, joins, analytics rules and query suggestions, InstantSearch, migrating from Algolia, or running, clustering, backing up and upgrading a Typesense server.

vite-docs

Teaches current Vite 8 practices drawn from the official documentation. Use when writing or fixing a vite.config, migrating from Vite 7 (Rolldown and Oxc replacing Rollup and esbuild), configuring the dev server, proxy or HMR, handling import.meta.env and modes, tuning the production build, library mode, SSR, writing a Vite plugin, using the HMR or JavaScript API, or the Environment API. Triggers on vite.config, defineConfig, rolldownOptions, import.meta.env, loadEnv, optimizeDeps, ssrLoadModule, ModuleRunner, this.environment, upgrade to Vite 8.

vitest-docs

Teaches current Vitest 5 practices drawn from the official documentation. Use when writing, reviewing or fixing Vitest tests (test, describe, expect, test.for, fixtures with test.extend, hooks, snapshots), mocking with vi (vi.fn, vi.spyOn, vi.mock, vi.when, fake timers, stubGlobal, stubEnv), configuring vitest.config or projects, choosing an environment or pool, filtering and running tests in CI, measuring coverage with v8 or istanbul, debugging slow or flaky suites, testing components in browser mode with Playwright, or migrating from Jest, Mocha or Vitest 4. Triggers on vitest, vi.mock, vi.fn, vitest.config, toMatchSnapshot, expect.poll, coverage thresholds, browser mode, @vitest/browser-playwright, jsdom, happy-dom, migrate Jest to Vitest, upgrade Vitest 5.

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