安裝 Tailwind CSS 和相關 ESLint、Prettier 設定 - Modern Next.js Blog 系列 #09 - iT 邦幫忙::一起幫忙解決難題，拯救 IT 人的一天

2022 iThome 鐵人賽

DAY 9

Modern Web

從零開始打造炫砲個人部落格，使用 Next.js、ContentLayer、i18next 等現代技術系列第 9 篇

安裝 Tailwind CSS 和相關 ESLint、Prettier 設定 - Modern Next.js Blog 系列 #09

14th鐵人賽 tailwind css next.js eslint prettier

EasonChang

2022-09-24 23:57:04

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TL;DR

這是「Modern Blog 30 天」系列第 9 篇文章，上一篇我們讓 Contentlayer 也支援了 MDX 格式。這篇讓我們來安裝 Tailwind CSS 這套 CSS 工具，設定好對應的 ESLint, Prettier 規則，準備開始美化畫面！

結果截圖如下：

Index Page result of Tailwind CSS

這篇修改的程式碼如下：

https://github.com/Kamigami55/nextjs-tailwind-contentlayer-blog-starter/compare/day08-mdx-support...day09-install-tailwindcss

我的個人網站裡也有此系列的好讀版，程式碼更易讀、也支援深色模式和側邊目錄，歡迎前往閱讀！

安裝 Tailwind CSS

pnpm add -D tailwindcss autoprefixer postcss
npx tailwindcss init -p

微調 /tailwind.config.js：

/** @type {import('tailwindcss').Config} */
module.exports = {
  content: ['./src/**/*.{js,ts,jsx,tsx}'],
  theme: {
    extend: {},
  },
  plugins: [],
};

微調 /postcss.config.js：

module.exports = {
  plugins: {
    tailwindcss: {},
    autoprefixer: {},
  },
};

修改 /src/styles/globals.css，刪除所有內容，替換成這三行：

@tailwind base;
@tailwind components;
@tailwind utilities;

在首頁套用基本樣式，試用看看 Tailwind CSS

移除 /src/styles/Home.module.css。

修改 /src/pages/index.tsx，改成下面這樣：

import type { NextPage } from 'next';
import Head from 'next/head';

import { allPostsNewToOld, Post } from '@/lib/contentLayerAdapter';

export function getStaticProps() {
  const posts = allPostsNewToOld;
  return { props: { posts } };
}

type Props = {
  posts: Post[];
};

const Home: NextPage<Props> = ({ posts }) => {
  return (
    <div>
      <Head>
        <title>My blog</title>
        <meta name="description" content="Welcome to my blog" />
        <link rel="icon" href="/favicon.ico" />
      </Head>

      <main className="p-4">
        <h1 className="mb-6 text-4xl font-bold">Welcome to my blog!</h1>

        <div className="grid grid-cols-1 gap-6 md:grid-cols-2">
          {posts.map((post) => (
            <div key={post.slug} className="rounded-lg border border-black p-6">
              <a href={post.path}>
                <h2 className="mb-4 text-2xl font-semibold">{post.title}</h2>
                <p>{post.description}</p>
              </a>
            </div>
          ))}
        </div>
      </main>
    </div>
  );
};

export default Home;

修改 /src/pages/[slug].tsx，改成下面這樣：

import { format, parseISO } from 'date-fns';
import type { GetStaticPaths, GetStaticProps, NextPage } from 'next';
import Head from 'next/head';
import { useMDXComponent } from 'next-contentlayer/hooks';

import { allPosts, Post } from '@/lib/contentLayerAdapter';

export const getStaticPaths: GetStaticPaths = () => {
  const paths = allPosts.map((post) => post.path);
  return {
    paths,
    fallback: false,
  };
};

export const getStaticProps: GetStaticProps<Props> = ({ params }) => {
  const post = allPosts.find((post) => post.slug === params?.slug);
  if (!post) {
    return {
      notFound: true,
    };
  }
  return {
    props: {
      post,
    },
  };
};

type Props = {
  post: Post;
};

const PostPage: NextPage<Props> = ({ post }) => {
  const MDXContent = useMDXComponent(post.body.code);

  return (
    <div>
      <Head>
        <title>{post.title}</title>
        <meta name="description" content={post.description} />
        <link rel="icon" href="/favicon.ico" />
      </Head>

      <main>
        <h1>{post.title}</h1>

        <time dateTime={post.date}>
          {format(parseISO(post.date), 'LLLL d, yyyy')}
        </time>

        <MDXContent />
      </main>
    </div>
  );
};

export default PostPage;

安裝 Tailwind CSS 相關 ESLint, Prettier 規則

pnpm add -D eslint-plugin-tailwindcss prettier-plugin-tailwindcss

修改 .prettierrc.js，加入 prettier-plugin-tailwindcss 這個 plugin，最後結果如下：

module.exports = {
  trailingComma: 'es5',
  singleQuote: true,
  printWidth: 80,
  semi: true,
  plugins: ['prettier-plugin-tailwindcss'],
};

修改 .eslintrc.js：

module.exports = {
  extends: [
    'eason',
    'next/core-web-vitals',
    'plugin:tailwindcss/recommended',
    'plugin:prettier/recommended', // Make this the last element so prettier config overrides other formatting rules
  ],
  plugins: ['tailwindcss'],
  rules: {
    'jsx-a11y/anchor-is-valid': [
      'error',
      {
        components: ['Link'],
        specialLink: ['hrefLeft', 'hrefRight'],
        aspects: ['invalidHref', 'preferButton'],
      },
    ],
    'tailwindcss/classnames-order': 'off', // Respect prettier-plugin-tailwindcss order
  },
  settings: {
    // Support absolute imports
    // https://www.npmjs.com/package/eslint-import-resolver-alias
    'import/resolver': {
      alias: {
        map: [['@', './src']],
        extensions: ['.js', '.jsx', '.ts', '.tsx'],
      },
    },
    'import/ignore': ['contentLayerAdapter.js'],
  },
  overrides: [
    {
      files: '**/*.{ts,tsx}',
      extends: [
        'eason/typescript',
        'plugin:prettier/recommended', // Make this the last element so prettier config overrides other formatting rules
      ],
    },
  ],
};