const path = require("path");
const CopyWebpackPlugin = require("copy-webpack-plugin");
const resolve = dir => {
  return path.join(__dirname, dir);
};


let env = process.env.VUE_APP_ENV || process.env.NODE_ENV;

const sourceMap = env !== "production";

let BASE_URL = '/'
if (env === "production") {
  BASE_URL = "/";
}


module.exports = {
  baseUrl: BASE_URL,
  // 如果你不需要使用eslint，把lintOnSave设为false即可
  lintOnSave: false,
  chainWebpack: config => {
    config.resolve.alias
      .set("@", resolve("src"))
      .set("@component", resolve("src/components"));
  },
  configureWebpack: {
    output: {
      filename: 'js/[name].[hash].js',  // 默认使用 contenthash 和 chunk 名称
      chunkFilename: 'js/[name].[hash].js',  // 对于异步加载的 chunk 文件同样配置
    }
  },
  // 设为false打包时不生成.map文件
  productionSourceMap: sourceMap,
};