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tailwindcss-docs

Enseigne les bonnes pratiques de Tailwind CSS v4 tirées de la documentation officielle. Utilisez cette compétence pour toute tâche liée à Tailwind CSS v4, même mineure, car de nombreuses habitudes de la v3 cassent silencieusement en v4.

Qu'est-ce que tailwindcss-docs ?

Cette compétence fournit une aide complète pour Tailwind CSS v4.x, basée sur la documentation officielle de tailwindcss.com. Elle couvre les changements majeurs par rapport à la v3, en particulier la configuration uniquement en CSS (via `@theme`, `@utility`, `@custom-variant`), les noms de classes renommés, et les nouvelles valeurs par défaut. La compétence est structurée pour guider l'utilisateur à travers les règles essentielles, l'installation avec différents bundlers (Vite, PostCSS, CLI), la personnalisation du thème, la gestion du mode sombre, et la migration depuis la v3. Elle inclut des fichiers de référence détaillés pour chaque aspect (installation, thème, grilles, typographie, etc.), avec des liens vers les sources documentaires. L'objectif est d'éviter les erreurs fréquentes et d'assurer une adoption correcte des patterns v4, comme l'utilisation de `@import "tailwindcss"` à la place de `@tailwind`, la suppression de `tailwind.config.js`, et l'emploi de `@source` pour les bibliothèques externes.

Compatible avec~Claude Code~Codex CLI✓Cursor
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Documentation

Tailwind CSS v4

Cette compétence couvre Tailwind CSS v4.x telle que documentée sur https://tailwindcss.com/docs. La v4 est configurée en CSS, pas en JavaScript, et de nombreux noms de classes et valeurs par défaut de la v3 ont changé. La compétence met en évidence ce qui diffère des habitudes : la configuration CSS-first, les valeurs par défaut surprenantes, les utilitaires renommés et les modèles recommandés par la documentation. Chaque affirmation dans les fichiers de référence se termine par la page dont elle est issue.

Comment naviguer

  1. Lisez les règles ci-dessous. Elles identifient les habitudes v3 les plus fréquentes qui cassent en v4.
  2. Ouvrez le fichier de référence correspondant à la tâche, depuis le tableau à la fin.
  3. Lorsque le projet comporte un tailwind.config.js, des directives @tailwind ou des noms de classes v3, ou lors de la révision de code pouvant contenir des habitudes v3, lisez d'abord references/upgrade-from-v3.md. Le chemin de migration par défaut est npx @tailwindcss/upgrade dans une nouvelle branche, puis une révision de son diff et un test dans le navigateur. https://tailwindcss.com/docs/upgrade-guide#using-the-upgrade-tool

Démarrage rapide (CSS-first, Vite)

npm install tailwindcss @tailwindcss/vite

// vite.config.ts
import { defineConfig } from 'vite'
import tailwindcss from '@tailwindcss/vite'
export default defineConfig({ plugins: [tailwindcss()] })

/* app.css */
@import "tailwindcss";

@theme {
  --color-midnight: #121063;
  --font-display: "Oswald", sans-serif;
}

@custom-variant dark (&:where(.dark, .dark *));

Les règles les plus importantes

Configuration et paramétrage

Thème et CSS personnalisé

Syntaxe des classes

Valeurs par défaut modifiées

Mode sombre avec une classe

@import "tailwindcss";
@custom-variant dark (&:where(.dark, .dark *));

// en ligne dans <head>, avant le rendu de la page
document.documentElement.classList.toggle(
  "dark",
  localStorage.theme === "dark" ||
    (!("theme" in localStorage) && window.matchMedia("(prefers-color-scheme: dark)").matches),
);

Définissez localStorage.theme = "dark" ou "light", et localStorage.removeItem("theme") pour suivre le système. https://tailwindcss.com/docs/dark-mode#with-system-theme-support

Fichiers de référence

FichierÀ lire quand
references/installation-and-frameworks.mdInstallation de Tailwind, choix entre Vite, PostCSS ou CLI, étapes spécifiques au framework, modules CSS, outils d'édition
references/upgrade-from-v3.mdMigration d'un projet v3, révision de code avec des noms de classes v3 ou une configuration
references/utilities-and-variants.mdÉcriture de classes : valeurs arbitraires, conflits, variantes d'état, group et peer, responsive, requêtes de conteneur, mode sombre
references/theme-and-colors.mdAjout ou remplacement de couleurs, polices, points d'arrêt, espacements, animations, espaces de noms de thème
references/custom-styles.mdStyles de base, Preflight, classes de composants, @utility, utilitaires fonctionnels, @custom-variant, @variant
references/directives-and-source-detection.md@apply, @reference, --alpha(), --spacing(), @config, @plugin, @source, options d'import (préfixe, important, source)
references/layout-flexbox-grid.mdAffichage, position, inset, z-index, colonnes, flex, grille, alignement et alignement -safe
references/spacing-and-sizing.mdRemplissage, marge, espace, largeur, hauteur, taille, échelle de conteneur, unités de viewport, tailles logiques
references/typography.mdPolices, taille de police et hauteur de ligne, espacement des lettres, habillage du texte, overflow wrap, décoration, contenu
references/backgrounds-and-borders.mdDégradés, image de fond, taille et position, rayon, largeur et couleur de bordure, contours
references/effects-and-filters.mdOmbres, anneaux, ombre de texte, opacité, modes de fusion, masques, filtres et filtres d'arrière-plan
references/transitions-transforms-tables.mdTransitions, transitions discrètes, animations, rotation, échelle, translation, 3D, zoom, tableaux
references/interactivity-and-svg.mdSchéma de couleurs, dimensionnement des champs, barres de défilement, défilement magnétique, curseur, will-change, remplissage et contour SVG, couleurs forcées

Individual skills in this repo

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

eslint-docs

Teaches current ESLint 10 practices drawn from the official documentation. Use when writing, reviewing or fixing an eslint.config.js (flat config, defineConfig, files, ignores, globalIgnores, extends, languageOptions, globals, parsers, processors), configuring ESLint rules and severities, disable comments and inline config, running the CLI in CI (--fix, --cache, --quiet, --max-warnings, bulk suppressions, formatters, feature flags, MCP server), writing custom rules (meta, schema, fixes, suggestions, selectors, scope, code paths) and testing them with RuleTester, building plugins, shareable configs, custom parsers, processors or formatters, using the Node.js API (ESLint, Linter), or migrating to ESLint 9 or 10 from eslintrc. Triggers on 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.

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.

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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