<style global jsx /> 似乎没有应用

Question

我有自定义 _document 文件，其内容如下。出于某种原因，<style global jsx /> 中指定的样式似乎并未应用于首次渲染。在开发中，当我刷新页面时它们会被应用，但是当我构建我的静态导出站点时，即使在刷新后它们也不会应用。

import { ServerStyleSheets } from '@material-ui/styles';
import Document, { Head, Main, NextScript } from 'next/document';
import React, { Fragment } from 'react';

class MyDocument extends Document {
  static async getInitialProps(ctx) {
    const sheets = new ServerStyleSheets();
    const originalRenderPage = ctx.renderPage;

    ctx.renderPage = () =>
      originalRenderPage({
        enhanceApp: App => props => sheets.collect(<App {...props} />)
      });

    const initialProps = await Document.getInitialProps(ctx);

    return {
      ...initialProps,
      styles: (
        <Fragment>
          {initialProps.styles}
          {sheets.getStyleElement()}
        </Fragment>
      )
    };
  }

  render() {
    return (
      <html lang="en">
        <Head>
          <link
            href="https://fonts.googleapis.com/css?family=Nunito+Sans:400,600,700&display=swap"
            rel="stylesheet"
          />

          <style global jsx>{`
            html {
              font-size: 16px;
            }

            a {
              text-decoration: none;
            }

            #__next {
              position: relative;
              display: flex;
            }

            #__next-prerender-indicator {
              display: none;
            }
          `}</style>
        </Head>
        <body>
          <Main />
          <NextScript />
        </body>
      </html>
    );
  }
}

export default MyDocument;

Answer 1

您应该将全局样式添加到 _app。至于为什么它在 _document 中不起作用，请检查此 https://github.com/zeit/styled-jsx#server-side-rendering

我不确定它是否有效，但你可以试试

import Document, { Html, Head, Main, NextScript } from 'next/document';
import flush from 'styled-jsx/server';

class MyDocument extends Document {
  static async getInitialProps (ctx) {
    const initialProps = await Document.getInitialProps(ctx)
    initialProps.styles = flush()
    return { ...initialProps }
  }

  render() {
    return (
      <Html>
        <Head>
          <link
            href="https://fonts.googleapis.com/css?family=Nunito+Sans:400,600,700&display=swap"
            rel="stylesheet"
          />

          <style global jsx>{`
            html {
              font-size: 16px;
            }

            a {
              text-decoration: none;
            }

            #__next {
              position: relative;
              display: flex;
            }

            #__next-prerender-indicator {
              display: none;
            }
          `}</style>
        </Head>
        <body>
          <Main />
          <NextScript />
        </body>
      </Html>
    );
  }
}


export default MyDocument;

<style global jsx /> 似乎没有应用

<style global jsx /> doesn't seem to be applied

styles

jsx

reactjs

next.js