Webpack生产版本中未提取Vue SFC样式 [英] Vue SFC styles not being extracted in webpack production build

问题描述

尝试将vue(和SFC)添加到我的Webpack应用中. <template>和<script>块可以正常工作，但是由于某些原因，没有提取<style>块中的样式进行生产构建.

Trying to add vue (and SFCs) to my webpack app. The <template> and <script> blocks work fine, but for some reason the styles in the <style> block are not being extracted for production build.

在开发版本中，它将.vue <style>块提取到一个单独的css文件(以入口点命名).可以，但是我希望他们进入我的主要样式表.

In the dev build, it's extracting the .vue <style> block to a separate css file (named for the entrypoint). Which is OK but I'd prefer they went into my main stylesheet.

但是无论我如何尝试，我都无法在生产版本中显示任何.vue样式(在任何文件中).

But no matter what I try, I can't get any .vue styles to show up (in any file) for the production build.

这是我的webpack配置的缩写版本:

This is an abbreviated version of my webpack config:

const HtmlWebpackPlugin = require("html-webpack-plugin");
const MiniCssExtractPlugin = require("mini-css-extract-plugin");
const VueLoaderPlugin = require("vue-loader/lib/plugin");
...

module.exports = (env) => {
  return {
    entry: {
      app: ["./src/polyfills.js", "./src/scss/styles.scss", "./src/app.js"],
      ...
      testview: "./src/js/views/TestView.js"
    },
    output: {
      path: assets,
      filename: "[name].[hash].js",
      publicPath: "/static/"
    },
    resolve: {
      modules: ["node_modules", "src"],
      alias: {
        vue$: "vue/dist/vue.esm.js"
      },
      extensions: ["*", ".js", ".vue"]
    },
    module: {
      rules: [
        {
          test: /\.vue$/,
          loader: "vue-loader"
        },
        {
          test: /\.js?$/,
          exclude: /node_modules/,
          use: [
            {
              loader: "babel-loader",
              options: {
                presets: [
                  [
                    "@babel/preset-env",
                    {
                      targets: {
                        browsers: ["> 1%", "last 2 versions", "ie >= 11"]
                      }
                    }
                  ]
                ],

                plugins: ["@babel/plugin-proposal-class-properties"],
                code: true,
                comments: true,
                cacheDirectory: true,
                babelrc: false
              }
            }
          ]
        },
        {
          test: /\.s?[ac]ss$/,
          use: [
            "vue-style-loader",
            MiniCssExtractPlugin.loader,
            {
              loader: "css-loader",
              options: {
                sourceMap: ifNotProduction()
              }
            },
            {
              loader: "postcss-loader",
              options: {
                ident: "postcss",
                sourceMap: ifNotProduction(),
                plugins: () =>
                  ifProduction([
                    require("autoprefixer")({
                      preset: "default"
                    }),
                    require("cssnano"),
                    require("css-mqpacker")
                  ])
              }
            },
            {
              loader: "sass-loader",
              options: {
                sourceMap: ifNotProduction()
              }
            }
          ]
        }
      ]
    },
    optimization: {
      splitChunks: {
        cacheGroups: {
          commons: {
            name: "commons",
            chunks: "initial",
            minChunks: 2,
            minSize: 0
          },
          styles: {
            name: "styles",
            test: /\.css$/,
            chunks: "all",
            enforce: true
          }
        }
      },
      occurrenceOrder: true 
    },
    plugins: [
      new VueLoaderPlugin(),
      new MiniCssExtractPlugin({
        filename: "style.[hash].css"
      }),
      new HtmlWebpackPlugin({
        hash: true,
        inject: false,
        template: "./src/jinja-templates/base.html.j2",
        filename: `${templates}/base.html.j2`,
      })
    ]
  };
};

我正在使用的.vue文件是这个

The .vue file I'm using is this demo one. I'm trying to import it into the entrypoint called 'testview' which contains simply:

import Vue from "vue";
import MainContent from "../components/main-content";
let MainComponent = Vue.extend(MainContent);
new MainComponent().$mount("#mainContent");

推荐答案

知道了.我必须从package.json中删除sideEffects: false.此问题对其进行了进一步解释.

Did figure it out. I had to remove sideEffects: false from my package.json. This issue explains it further.

还是想知道如何将.vue样式提取到我的主样式表中.到目前为止，.vue样式正在提取到单独的样式表中(开发和生产).

Still would like to know how to extract the .vue styles to my main stylesheet As it is now, the .vue styles are extracting to a separate stylesheet (dev and production).

这篇关于Webpack生产版本中未提取Vue SFC样式的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！