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next-intl-docs

涵蓋最新 next-intl 4 實務,用於 Next.js 應用程式的國際化(i18n),內容擷取自官方文件。

next-intl-docs 是什麼?

此技能提供 next-intl 4.x 的完整指引,專注於 Next.js App Router 的國際化實作。它強調了與常見習慣不同的部分,例如令人意外的預設值、常見陷阱、已棄用的 API,以及官方文件推薦的模式。技能內容按任務拆分成多個參考檔案,涵蓋從基本設定、路由、訊息管理,到格式化、測試與型別安全等主題。支援的範圍包括:使用 defineRouting 設定區域路由、透過 createMiddleware 建立中介軟體、使用 createNavigation 建立語言切換器、利用 useTranslations 或 getTranslations 進行翻譯,以及透過 NextIntlClientProvider 傳遞訊息。此外,也涵蓋 ICU 訊息格式(複數、選擇、富文本)、日期/數字/清單格式化、後端 Actions、Route Handlers、靜態渲染、型別安全的訊息(透過 AppConfig),以及搭配 Jest、Vitest、Storybook 的測試策略。此技能適用於 Claude Code 等 AI 代理工具,能有效減少開發者在整合 next-intl 時的摸索時間。

相容平台~Claude Code~Codex CLI~Cursor
Part ofNext.js
npx skills add https://github.com/quentin-autret/claude-skills/tree/main/skills/next-intl-docs

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說明文件

next-intl 4

此技能涵蓋 next-intl 4.x,內容基於 https://next-intl.dev/docs/getting-started(文件版本 4.14.9)。它記錄了與常見習慣不同的部分:令人意外的預設值、常見陷阱、舊版 API,以及文件推薦的模式。參考檔案中的每個說法末尾都標明了出處頁面。

如何瀏覽

  1. 先閱讀底下的快速入門與快速規則,它們涵蓋了最常見的錯誤。
  2. 根據任務,從底下的表格中開啟對應的參考檔案。
  3. 當程式碼使用 setRequestLocale、requestLocale 或 middleware.ts 時,請先閱讀「舊模式」表格。

快速入門 (App Router)

App Router 是推薦路徑。Pages Router 仍受支援,請參閱 references/setup.md。 https://next-intl.dev/docs/getting-started/pages-router

// next.config.ts
import {NextConfig} from 'next';
import createNextIntlPlugin from 'next-intl/plugin';

const nextConfig: NextConfig = {};
const withNextIntl = createNextIntlPlugin();
export default withNextIntl(nextConfig);

https://next-intl.dev/docs/getting-started/app-router

不使用基於語系的 URL 時,src/i18n/request.ts 會從使用者偏好或 Cookie(最簡單的方式)來解析語系:

// src/i18n/request.ts
import {cookies} from 'next/headers';
import {getRequestConfig} from 'next-intl/server';

export default getRequestConfig(async () => {
  const store = await cookies();
  const locale = store.get('locale')?.value || 'en';
  return {
    locale,
    messages: (await import(`../../messages/${locale}.json`)).default
  };
});

https://next-intl.dev/docs/getting-started/app-router

// src/app/layout.tsx
import {NextIntlClientProvider} from 'next-intl';
import {getLocale} from 'next-intl/server';

export default async function RootLayout({children}) {
  const locale = await getLocale();
  return (
    <html lang={locale}>
      <body>
        <NextIntlClientProvider>{children}</NextIntlClientProvider>
      </body>
    </html>
  );
}

https://next-intl.dev/docs/getting-started/app-router , https://next-intl.dev/docs/usage/configuration

import {useTranslations} from 'next-intl';
import {getTranslations} from 'next-intl/server';

export function HomePage() {
  const t = useTranslations('HomePage'); // 非 async 元件
  return <h1>{t('title')}</h1>;
}

export async function Profile() {
  const t = await getTranslations('ProfilePage'); // async 元件
  return <h1>{t('title')}</h1>;
}

https://next-intl.dev/docs/getting-started/app-router

如需 /en/about 這種風格的 URL,請新增 src/i18n/routing.ts、src/proxy.ts、src/i18n/navigation.ts 以及頂層的 [locale] 區段:請參閱 references/routing.md。 https://next-intl.dev/docs/routing/setup

快速規則

設定

路由

用戶端元件

訊息

測試

舊模式

舊模式新模式
src/middleware.ts在 Next.js 16 中改用 src/proxy.ts,createMiddleware 的程式碼相同
在每個 layout 和 page 頂層使用 setRequestLocale(locale)在 i18n/request.ts 中使用 next/root-params,無需此設定即可進行靜態渲染
getRequestConfig(async ({requestLocale}) => ...)getRequestConfig(async ({locale}) => ...) 並加上 rootParams.locale() 作為後備方案
扁平化的訊息鍵名,如 "HomePage.title"巢狀物件,如 {"HomePage": {"title": ...}}
搭配 dangerouslySetInnerHTML 使用的 t.raw HTML使用 t.rich (React) 或 t.markup (字串),t.raw 僅用於跳過解析(已淨化)的場合

詳細資訊請見:references/routing.md 和 references/messages.md。

參考檔案

檔案用途
references/setup.md外掛、請求設定、Provider 預設值、無路由的語系、訊息儲存、Pages Router
references/routing.mddefineRouting、[locale] 區段、proxy.ts、比對器、next/root-params、靜態渲染、localePrefix、網域、Cookie、替代連結、本地化路徑名、靜態匯出、疑難排解
references/navigation.mdcreateNavigation、Link、useRouter、usePathname、redirect、getPathname、語系切換器、型別安全的 href
references/messages.mduseTranslations、命名空間、ICU 複數與選擇、富文本、t.markup、t.raw、t.has、陣列、遺失訊息、onError、時區、now
references/formatting.mduseFormatter:日期、相對時間、範圍、數字、清單、顯示名稱、ICU 骨架、全域格式
references/server-and-client.mdServer 與 Client 元件、選擇性傳遞訊息、後設資料、Server Actions、Zod、Route Handlers、網站地圖、OG 圖片、404 與錯誤頁面
references/extraction.md實驗性的 useExtracted 和 getExtracted、外掛 experimental 選項、PO 檔案、預先編譯、自訂轉碼器、Monorepo
references/typescript-and-tooling.mdAppConfig 型別擴充、型別安全引數、Jest 與 Vitest 測試、Storybook、use-intl 核心、執行時期需求、程式碼檢查、翻譯管理、代理約定

已爬取的頁面:SOURCES.md。

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.

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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