create-react-app 打包后静态文件过大 webpack优化

在最近的项目里，页面和静态文件并不是很多的情况下，打包后发现产出的静态资源却很大。

1.关掉sourcemap

在config/webpack.config.js文件里，大概30几行的位置添加这样一句代码，这样做的作用是防止线上生成环境将源码一起打包部署。

2.将一些公共的库（比如antd）做一个缓存

splitChunks: {
        chunks: ‘all‘,
        name: "vender",
        cacheGroups: {
          vender: {
            name: "vendor",
            test: /[\\/]node_modules[\\/]/,
            chunks: "all",
            priority: 10,
            enforce: true
          },
          react: {
            name: "react",
            test: (module) => /react|redux/.test(module.context),
            chunks: "initial",
            priority: 11,
            enforce: true
          },
          antd: {
            name: "antd",
            test: (module) => {
              return /ant/.test(module.context);
            },
            chunks: "initial",
            priority: 11,
            enforce: true
          },
          moment: {
            name: "moment",
            test: (module) => {
              return /moment/.test(module.context);
            },
            chunks: "initial",
            priority: 13,
            enforce: true
          }
        }
      },