Webpack alias is not resolved in .less file.

[wenyang9319]

• Operating System: Mac
• Node Version: v10.16.3
• NPM Version: 6.13.4
• webpack Version: ^4.42.1
• less-loader Version: ^5.0.0
• less: ^3.11.1

Expected Behavior

Webpack alias to be resolved in url request.

In my context will be
instead of requesting ./Assets/images/land/background.jpg
should something like localhost:8000/#/src/assets/images/land/background.jpg

Actual Behavior

How image is requested:
background-image: url(Assets/images/land/background.jpg);

Error as shown below:
ERROR in ./src/library/components/Town/Town.less (./node_modules/css-loader/dist/cjs.js!./node_modules/less-loader/dist/cjs.js??ref--6-2!./src/library/components/Town/Town.less) Module not found: Error: Can't resolve './Assets/images/land/background.jpg' in '/Users/wenyang/Work/react/dudu-mars/src/library/components/Town'

Code

// webpack.config.js
const HtmlWebPackPlugin = require("html-webpack-plugin");
const path = require("path");

module.exports = {
  module: {
    rules: [
      {
        test: /\.(js|jsx)$/,
        exclude: /node_modules/,
        use: {
          loader: "babel-loader",
        },
      },
      {
        test: /\.css$/i,
        use: ["style-loader", "css-loader"],
      },
      {
        test: /\.less$/,
        use: [
          {
            loader: "style-loader", // creates style nodes from JS strings
          },
          {
            loader: "css-loader", // translates CSS into CommonJS
          },
          {
            loader: "less-loader", // compiles Less to CSS
          },
        ],
      },
      {
        test: /\.html$/,
        use: [
          {
            loader: "html-loader",
          },
        ],
      },
      {
        test: /\.(png|jpe?g|gif)$/i,
        loader: "file-loader",
        options: {
          esModule: false,
        },
      },
    ],
  },
  plugins: [
    new HtmlWebPackPlugin({
      template: "./src/index.html",
      filename: "./index.html",
    }),
  ],
  resolve: {
    extensions: [
      ".web.js",
      ".web.jsx",
      ".web.ts",
      ".web.tsx",
      ".js",
      ".json",
      ".jsx",
      ".ts",
      ".tsx",
    ],
    alias: {
      Library: path.resolve(__dirname, "./src/library/"),
      Assets: path.resolve(__dirname, "./src/assets/"),
      Builder: path.resolve(__dirname, "./src/builder/"),
      Utils: path.resolve(__dirname, "./src/utils/"),
    },
  },
};

// package.json
{
  "name": "dudu-mars",
  "version": "1.0.0",
  "description": "",
  "main": "index.js",
  "scripts": {
    "start": "webpack-dev-server --open --mode development",
    "build": "webpack --mode production"
  },
  "keywords": [],
  "author": "",
  "license": "ISC",
  "dependencies": {
    "dva": "^2.4.1",
    "lodash": "^4.17.15",
    "phaser": "^3.22.0",
    "react": "^16.13.1",
    "react-dom": "^16.13.1",
    "react-json-editor-ajrm": "^2.5.9",
    "react-pose": "^4.0.10",
    "react-responsive-spritesheet": "^2.3.9",
    "react-sizeme": "^2.6.12"
  },
  "devDependencies": {
    "@babel/core": "^7.9.0",
    "@babel/plugin-proposal-class-properties": "^7.8.3",
    "@babel/plugin-transform-runtime": "^7.9.0",
    "@babel/preset-env": "^7.9.5",
    "@babel/preset-react": "^7.9.4",
    "babel-loader": "^8.1.0",
    "css-loader": "^3.5.2",
    "file-loader": "^6.0.0",
    "html-loader": "^1.1.0",
    "html-webpack-plugin": "^4.2.0",
    "less": "^3.11.1",
    "less-loader": "^5.0.0",
    "style-loader": "^1.1.4",
    "webpack": "^4.42.1",
    "webpack-cli": "^3.3.11",
    "webpack-dev-server": "^3.10.3"
  }
}

Extra

I was migrated from https://github.com/sorrycc/roadhog to webpack.
background-image: url(Assets/images/land/background.jpg); was resolved correctly.

[Alexey Lavinsky]

Same problem - webpack-contrib/css-loader#914

While you can use tilde

background-image: url(~Assets/images/land/background.jpg);