javascript - webpack - scss 无法解析背景图像 url

Question

在我的 scss 文件中，我使用 background-image: url("../../../assets/images/home/banner-mobile.png");应用程序运行成功，但没有显示背景图像:
背景图像 URL 未解析。

webpack/webpack.base.js

const webpack = require("webpack");
const path = require("path");

const utils = require("./utils");

const HtmlWebpackPlugin = require("html-webpack-plugin");

module.exports = {
  entry: "./src/index.jsx",
  resolve: {
    alias: {
      "@": utils.resolve("src")
    },
    extensions: ["*", ".js", ".jsx"],
    fallback: {...},
  },
  module: {
    rules: [
      {
        test: /\.(js|jsx)$/,
        exclude: /node_modules/,
        use: {
          loader: "babel-loader",
        },
      },
      {
        test: /\.(sa|sc|c)ss$/,
        use: [
          {
            loader: "style-loader",
          },
          {
            loader: "css-loader",
          },
          {
            loader: "sass-loader"
          },
          {
            loader: "sass-resources-loader",
            options: {
              resources: ["./src/assets/scss/main.scss"],
            },
          },
        ],
      },
      {
        test: /\.(png|jpg|gif)$/i,
        use: [
          {
            loader: "url-loader",
            options: {
              limit: 8192
            },
          },
        ],
      }
    ],
  },
  plugins: [
    new HtmlWebpackPlugin({
      template: "public/index.html",
      filename: "index.html",
      inject: true,
    })
  ],
};

webpack/webpack.dev.js

const { merge } = require("webpack-merge");
const base = require("./webpack.base");

const Dotenv = require("dotenv-webpack");

module.exports = merge(base, {
  mode: "development",
  devtool: "inline-source-map",
  output: {
    publicPath: '/',
  },
  devServer: {
    port: 3000,
    static: true,
    static: 'dist'
  },
  plugins: [new Dotenv({ path: "./.env.development" })],
});

更新 1
当我在 Web Inspector > Sources 中查看 png 时:

当我在浏览器中打开带有 URL 的图像时:

更新 2:
当我通过 VSCode 构建和查看图像时，它显示如下:

不确定以下文件是否相关
webpack/Util.js

const path = require('path')

module.exports = {
  resolve: function(dir) {
    return path.join(__dirname, '..', dir)
  }
}

Answer 1

由于您使用的是 Webpack 5，我建议使用 Asset Modules而不是弃用的加载器

module: {
  rules: [
    // ...
    {
      test: /\.(png|jpg|gif)$/i,
      type: "asset",
      parser: {
        dataUrlCondition: {
          maxSize: 8192
        }
      }
    }
  ]
}

我怀疑您遇到了文档中所述的资源处理重复问题...

When using the old assets loaders (i.e. file-loader / url-loader / raw-loader) along with Asset Module in webpack 5, you might want to stop Asset Module from processing your assets again as that would result in asset duplication. This can be done by setting asset's module type to 'javascript/auto'.