color2.toHSL is not a function

Question

css文件编辑报错 emmmm.... loaders用的是["style-loader", "css-loader", "less-loader"]
求问如何解决

const path = require("path");

module.exports = {
  module: {
    rules: [
      {
        test: /\.(css|less)$/,
        loaders: ["style-loader", "css-loader", "less-loader"],
        include: path.resolve(__dirname, "../")
      },
      {
        test: /\.(png|jpg|jpeg|ttf|eot|woff|svg)$/,
        loaders: ["url-loader"],
        include: path.resolve(__dirname, "../")
      }
    ]
  }
};