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webpack-custom-less-theme

v0.0.2

Published

use less generate theme

Downloads

5

Readme

webpack-custom-less-theme

使用方法

// webpack.config.js
const lessThemeLoader = require('webpack-custom-less-theme/loader');
const LessThemeWebpackPlugin = require('webpack-custom-less-theme');
...
{
  test: /\.less$/,
  use: [
    ...,
    {
       loader: lessThemeLoader,
    },
    ...
  ]
}
...
plugins: [
  // 详细配置参考index.js -> getOptions方法
  new LessThemeWebpackPlugin(
    {
     themeVariables: ['@primary-color'],
     themeSelfVariables: [],
     // 默认你的less变量在src/assets/css/var.less文件中
     varFile: './src/assets/css/var.less',
     /* 以下参数一般用不上 */
     customColorRegexArray: [],
     fileName: 'css/theme-colors-[contenthash:8].less',
     // 默认使用的ui框架为view-design,如果你的项目是它,则不用处理
     ui: 'view-design',
     uiStyleDir: './src/styles',
     uiColorFile: './color/colors.less',
     // 衍生变量生成函数文件地址
     colorPaletteFile: './color/colorPalette.less',
     // 根据这个值,判断从js中提取css使用哪个正则表达式
     isJsUgly: !isDev(),
     // 衍生变量
     derivedVars: [],
     ...
    }
  ),
]

如果你使用的是vue-cli3,推荐使用vue-cli-plugin-less-theme 默认的generateThemeUseLess方法会在window.less上添加一个changeTheme方法:

window.less.changeTheme({
   '@primary-color': '#f90',
});

其他

  1. 该项目是参考自antd-theme-generatorwebpack-theme-color-replacer
  2. 简单说下上面两者的区别,antd-theme-generator处理的场景是样式文件都单独抽离出来的情况下, webpack-theme-color-replacer则没有这个限制,他是基于webpack插件来处理css文件的
  3. antd-theme-generator中对于css的处理时,使用了postcss插件的方法,这种相对于webpack-theme-color-replacer处理css的方式,个人感觉更好一些,比如扩展性。
  4. 所以最终基于antd-theme-generator,然后参考了webpack-theme-color-replacer中部分代码(比如开发模式下,在js中抽离css),然后自己再做了一些需求上的优化
  5. 关于主题换肤功能,我在代码中也有备注,这个项目使用的是less在线替换的方式,但是实际上只要能得到最终的颜色样式内容,后面其实就是采用什么方式去替换颜色的步骤了,使用less.js只是其中一种方法

和上面两个插件相比,做了哪些改变呢?

  1. 将原来的css中对应的颜色样式进行了删除,这样无论theme-color插入在html的哪个地方,都不需要担心样式覆盖问题
  2. 支持热更新