서버 사이드 렌더링

import React from 'react';
import { createCache, extractStyle, StyleProvider } from '@ant-design/cssinjs';
import type Entity from '@ant-design/cssinjs/es/Cache';
import { renderToString } from 'react-dom/server';

const App = () => {
  // SSR 렌더링
  const cache = React.useMemo<Entity>(() => createCache(), []);
  const html = renderToString(
    <StyleProvider cache={cache}>
      <MyApp />
    </StyleProvider>,
  );

  // 캐시에서 스타일 가져오기
  const styleText = extractStyle(cache);

  // 스타일 혼합시키기
  return `
    <!DOCTYPE html>
    <html>
      <head>
        ${styleText}
      </head>
      <body>
        <div id="root">${html}</div>
      </body>
    </html>
  `;
};

export default App;

npm install ts-node tslib cross-env --save-dev

{
  "compilerOptions": {
    "strictNullChecks": true,
    "module": "NodeNext",
    "jsx": "react",
    "esModuleInterop": true
  },
  "include": ["next-env.d.ts", "**/*.ts", "**/*.tsx"]
}

// scripts/genAntdCss.tsx
import fs from 'fs';
import { extractStyle } from '@ant-design/static-style-extract';

const outputPath = './public/antd.min.css';

const css = extractStyle();

fs.writeFileSync(outputPath, css);

import fs from 'fs';
import React from 'react';
import { extractStyle } from '@ant-design/static-style-extract';
import { ConfigProvider } from 'antd';

const outputPath = './public/antd.min.css';

const testGreenColor = '#008000';
const testRedColor = '#ff0000';

const css = extractStyle((node) => (
  <>
    <ConfigProvider
      theme={{
        token: {
          colorBgBase: testGreenColor,
        },
      }}
    >
      {node}
    </ConfigProvider>
    <ConfigProvider
      theme={{
        token: {
          colorPrimary: testGreenColor,
        },
      }}
    >
      <ConfigProvider
        theme={{
          token: {
            colorBgBase: testRedColor,
          },
        }}
      >
        {node}
      </ConfigProvider>
    </ConfigProvider>
  </>
));

fs.writeFileSync(outputPath, css);

// package.json
{
  "scripts": {
    "dev": "next dev",
    "build": "next build",
    "start": "next start",
    "lint": "next lint",
    "predev": "ts-node --project ./tsconfig.node.json ./scripts/genAntdCss.tsx",
    "prebuild": "cross-env NODE_ENV=production ts-node --project ./tsconfig.node.json ./scripts/genAntdCss.tsx"
  }
}

import { StyleProvider } from '@ant-design/cssinjs';
import type { AppProps } from 'next/app';

import '../public/antd.min.css'; // 이 라인을 추가하세요
import '../styles/globals.css';

export default function App({ Component, pageProps }: AppProps) {
  return (
    <StyleProvider hashPriority="high">
      <Component {...pageProps} />
    </StyleProvider>
  );
}

import { extractStyle } from '@ant-design/static-style-extract';
import { ConfigProvider } from 'antd';

const cssText = extractStyle((node) => (
  <ConfigProvider
    theme={{
      token: {
        colorPrimary: 'red',
      },
    }}
  >
    {node}
  </ConfigProvider>
));

import { extractStyle } from '@ant-design/static-style-extract';
import { ConfigProvider } from 'antd';

const cssText = extractStyle((node) => (
  <>
    <ConfigProvider
      theme={{
        token: {
          colorBgBase: 'green ',
        },
      }}
    >
      {node}
    </ConfigProvider>
    <ConfigProvider
      theme={{
        token: {
          colorPrimary: 'blue',
        },
      }}
    >
      <ConfigProvider
        theme={{
          token: {
            colorBgBase: 'red ',
          },
        }}
      >
        {node}
      </ConfigProvider>
    </ConfigProvider>
  </>
));

// scripts/genAntdCss.tsx
import { createHash } from 'crypto';
import fs from 'fs';
import path from 'path';
import { extractStyle } from '@ant-design/cssinjs';
import type Entity from '@ant-design/cssinjs/lib/Cache';

export type DoExtraStyleOptions = {
  cache: Entity;
  dir?: string;
  baseFileName?: string;
};
export function doExtraStyle({
  cache,
  dir = 'antd-output',
  baseFileName = 'antd.min',
}: DoExtraStyleOptions) {
  const baseDir = path.resolve(__dirname, '../../static/css');

  const outputCssPath = path.join(baseDir, dir);

  if (!fs.existsSync(outputCssPath)) {
    fs.mkdirSync(outputCssPath, { recursive: true });
  }

  const css = extractStyle(cache, true);
  if (!css) return '';

  const md5 = createHash('md5');
  const hash = md5.update(css).digest('hex');
  const fileName = `${baseFileName}.${hash.substring(0, 8)}.css`;
  const fullpath = path.join(outputCssPath, fileName);

  const res = `_next/static/css/${dir}/${fileName}`;

  if (fs.existsSync(fullpath)) return res;

  fs.writeFileSync(fullpath, css);

  return res;
}

// _document.tsx
import { createCache, StyleProvider } from '@ant-design/cssinjs';
import type { DocumentContext } from 'next/document';
import Document, { Head, Html, Main, NextScript } from 'next/document';

import { doExtraStyle } from '../scripts/genAntdCss';

export default class MyDocument extends Document {
  static async getInitialProps(ctx: DocumentContext) {
    const cache = createCache();
    let fileName = '';
    const originalRenderPage = ctx.renderPage;
    ctx.renderPage = () =>
      originalRenderPage({
        enhanceApp: (App) => (props) => (
          <StyleProvider cache={cache}>
            <App {...props} />
          </StyleProvider>
        ),
      });

    const initialProps = await Document.getInitialProps(ctx);
    // 1.1 사용된 스타일 추출
    fileName = doExtraStyle({
      cache,
    });
    return {
      ...initialProps,
      styles: (
        <>
          {initialProps.styles}
          {/* 1.2 css 주입 */}
          {fileName && <link rel="stylesheet" href={`/${fileName}`} />}
        </>
      ),
    };
  }

  render() {
    return (
      <Html lang="en">
        <Head />
        <body>
          <Main />
          <NextScript />
        </body>
      </Html>
    );
  }
}

Ant Design

서버 사이드 렌더링

Ant Design

서버 사이드 렌더링

인라인 스타일

전체 내보내기(Whole export)

커스텀 테마

혼합 테마

필요에 따른 추출

인라인 스타일

전체 내보내기(Whole export)

커스텀 테마

혼합 테마

필요에 따른 추출