const path = require("path");
const CompressionWebpackPlugin = require("compression-webpack-plugin");
const isProd = process.env.NODE_ENV === "production";
function resolve(dir) {
  return path.join(__dirname, dir);
}
module.exports = {
  publicPath: process.env.NODE_ENV === "production" ? "/" : "/",
  chainWebpack: (config) => {
  
    config.resolve.alias.set("@", resolve("src"));
  
  },
  configureWebpack: (config) => {
    /* gzip压缩，nginx需要开启gzip*/
    if (isProd) {
      // 配置webpack 压缩
      config.plugins.push(
        new CompressionWebpackPlugin({
          test: /\.js$|\.html$|\.css$/,
          // 超过4kb压缩
          threshold: 4096,
        })
      );
    }
    // 添加 CDN 配置
    config.plugins.forEach((plugin) => {
      if (plugin.constructor.name === 'HtmlWebpackPlugin') {
        plugin.options.cdn = {
          js: []
        };
      }
    });
  },
  devServer: {
    open: true,
    https: false,
    proxy: {
      "/api": {
        target: "http://18.163.50.191:19005/api",
        changeOrigin: true,
        pathRewrite: {
          "^/api": "",
        },
      },
    },
  },
};