next-less v1.1.0

Next.js + Antd (with Less)

Use Antd (with Less) with Next.js, Zero Dependency on other Next-Plugins.

Support Hot Update style after modifying Antd less variables since 1.0.

Demo

📌 Demo 1 - w/ Next.js v10

📌 Demo 2 - w/ CRA-Co v4

Yep! this plugin supports both Next.js and CRA-Co since v1.0.

Introduction

Issues

Since Next.js 9.3 supports sass and css by default, but does not support less. If you use Next.js > 9.3 and use the official less plugin, you will definitely encounter the following problems.

1. CIL Warning Warning: Built-in CSS support is being disabled due to custom CSS configuration being detected.

2. Does not support automatic recognition of css modules, e.g. a.module.less and a.less

Solution

1. Find sassModule and copy onec and replace the sass-loader inside with less-loader.

2. Then enable the modules.auto option of css-loader. This can simply match all *.less (no need to match it is *.module.less or *.less), and hand it over to css-loader.

This is the lowest cost way, And CLI will no longer show this disgusting warning. The important thing is that there is Zero Dependency on other Next-Plugins..

Compatibility

• next v9.3 ~ v10.1+ (webpack4)
• less v3.0 ~ v4.0+

Installation

yarn add next-less

Usage

for Next.js

// next.config.js
const withAntdLess = require('next-less');

module.exports = withAntdLess({
  // optional
  modifyVars: { '@primary-color': '#04f' },
  // optional
  lessVarsFilePath: './src/styles/variables.less',
  // optional https://github.com/webpack-contrib/css-loader#object
  cssLoaderOptions: {},

  // Other Config Here...

  webpack(config) {
    return config;
  },
});

Add a .babelrc.js

// .babelrc.js
module.exports = {
  presets: [['next/babel']],
  plugins: [['import', { libraryName: 'antd', style: true }]],
};

Detailed config can be found in next.config.js file.

for CRA-Co

const cracoPluginLess = require('next-less/overrideWebpackConfig');

module.exports = {
  babel: cracoBabel,
  plugins: [
    cracoPluginAnalyze,
    {
      plugin: cracoPluginLess,
      options: {
        modifyVars: {
          '@THEME--DARK': 'theme-dark',
        },
        lessVarsFilePath: './src/styles/variables.less',
      },
    },
  ],
};

Detailed config can be found in craco.config.js file.

Tips

• If you need to import the global CSS (e.g. styles.css), you can write in _app.tsx,

// ./page/_app.tsx
import './styles.css';

• If you need to import the global Less (e.g. styles.less), you can use require syntax,

// ./page/index.tsx
require('./styles.less');

• If you want to override antd vars, make sure that antd's default.less' is referenced at least once in the project's less file. issues #36

@import '~antd/lib/style/themes/default.less';

@primary-color: #04f;

.xyz {
  font-size: 100%;
}

License

© MIT