vue + vuecli 打包优化

1，路由分模块打包

2，chunk-verdors 单个打包

configureWebpack: (config) => {
        config.optimization = {
            runtimeChunk: 'single',
            splitChunks: {
                chunks: 'all',
                maxInitialRequests: Infinity,
                minSize: 20000,
                cacheGroups: {
                    vendor: {
                        test: /[\\/]node_modules[\\/]/,
                        name(module) {
                            // get the name. E.g. node_modules/packageName/not/this/part.js
                            // or node_modules/packageName
                            const packageName = module.context.match(/[\\/]node_modules[\\/](.*?)([\\/]|$)/)[1]
                            // npm package names are URL-safe, but some servers don't like @ symbols
                            return `npm.${packageName.replace('@', '')}`
                        }
                    }
                }
            }
        }
    },

3，禁用生产环境sourcemap

productionSourceMap: false,

4，图片压缩