buy-vs-rent/build/webpack.prod.js

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const path = require("path");
const merge = require("webpack-merge"); // 合并配置
const base = require("./webpack.base");
const { CleanWebpackPlugin } = require("clean-webpack-plugin"); // 清理文件（夹）

module.exports = merge(base, {
  entry: {
    // 入口文件
    "buy-vs-rent": path.resolve(__dirname, "../source/buy-vs-rent.js")
  },

  output: {
    // 出口文件
    path: path.resolve(__dirname, "../dist"),
    filename: "[name].js",
    library: "buyvsrent", // 暴露library的变量名
    libraryTarget: "umd" // 暴露library的方式
  },

  plugins: [new CleanWebpackPlugin()],

  devtool: "source-map", // 生成sourcemap

  mode: "production" // 模式
});