npm install --save-dev less-json-import-loader

• prefix: string, defualt json-import

• lessVariable: boolean, defualt true

• cssVariable: boolean, defualt true

• hash: boolean, defualt false

// webpack.config.js
{
  module: {
    rules: [
      { test: /\.less$/, use: [ "less-loader", "less-json-import-loader" ] }
    ]
  }
}

before:

// a.less
@json-import "./test.json";
background: #222;

// test.json
{
  "a": "#123456"
}

after

@a-md5: 1;
:root {
  --a-md5: 1;
}
background: #222;

md5: it is the value of md5('path/to/test.json')