在新的CRA中使用babel转换软件包后,CSS和图像文件不可用

时间:2020-03-01 09:39:05

标签: reactjs npm webpack file-upload babeljs

我正在将CSS导入为import'./style.css';和具有背景URL属性的CSS中的图像。我想要的是制作一个软件包,将其发布到npm而不进行构建,然后将其安装到新的CRA中并在其中使用。 Using self made npm package in react. Failed to compile。从这里开始,我知道现在要使用该已安装的软件包,必须对其进行编译。但是问题是我的js / jsx已从ES6转换为ES5,但是图像和CSS没有进入新的已转换文件夹。

详细信息 我在Reactjs中制作了一个程序包,发布源代码后无法使用它,而不是通过构建。 然后我在上面发布了一个问题:Using self made npm package in react. Failed to compile

现在,我可以按照接受的答案中的步骤使用它,即使用babel编译./src。

我仍然遇到的问题是我没有在新的已编译位置(即./lib/src)中获取CSS和图像。如果我将所有图像和CSS文件夹复制到./lib/src中的相应位置。它可以工作,但我不想手动进行。

有关如何实现此目标的任何建议。

WEBPACK.CONFIG.JS

module.exports = {
  overrides: [
    {
      test: ["./node_modules/<component_name>"],
      presets: ["@babel/preset-env", "@babel/preset-react"],
      plugins: ["@babel/plugin-proposal-class-properties"]
    }
  ]
};

PACKAGE.json

{
  "name": "package-test",
  "version": "0.1.0",
  "private": true,
  "dependencies": {
    "@babel/preset-es2015": "^7.0.0-beta.53",
    "@babel/preset-react": "^7.8.3",
    "@material-ui/core": "^1.5.1",
    "@testing-library/jest-dom": "^4.2.4",
    "@testing-library/react": "^9.4.0",
    "@testing-library/user-event": "^7.2.1",
    "active-event-stack": "^1.0.0",
    "babel-loader": "^8.0.6",
    "babel-plugin-webpack-loaders": "^0.9.0",
    "classnames": "^2.2.3",
    "css-loader": "^3.4.2",
    "file-loader": "^5.0.2",
    "material-ui": "^0.20.0",
    "path": "^0.12.7",
    "prop-types": "^15.6.0",
    "react": "^16.12.0",
    "react-dom": "^16.12.0",
    "react-draggable": "^2.2.6",
    "react-onclickoutside": "^5.10.0",
    "react-redux": "^7.1.3",
    "react-resizable": "^1.7.1",
    "react-router-dom": "^5.1.2",
    "react-scripts": "3.4.0",
    "redux": "^3.7.2",
    "style-loader": "^1.1.3",
    "styled-components": "^4.3.2",
    "url-loader": "^3.0.0",
    "wolfy87-eventemitter": "^5.2.9"
  },
  "scripts": {
    "start": "react-scripts start",
    "build": "react-scripts build",
    "test": "react-scripts test",
    "eject": "react-scripts eject"
  },
  "eslintConfig": {
    "extends": "react-app"
  },
  "browserslist": {
    "production": [
      ">0.2%",
      "not dead",
      "not op_mini all"
    ],
    "development": [
      "last 1 chrome version",
      "last 1 firefox version",
      "last 1 safari version"
    ]
  },
  "devDependencies": {
    "@babel/cli": "^7.8.4"
  }
}

3 个答案:

答案 0 :(得分:2)

好的,如果你想发布一个组件库,那么网上有很多教程,如果你的具体问题是无法发布你的静态资源,比如 css images 和 { {1}} 等,然后您可以将 scss 命令(linux 和 macos)附加到您的构建脚本

cp

在命令 "scripts": { "build": "babel src --out-dir lib --ignore src/__tests__/ && cp -R src/assets lib/", }, 的末尾注意这一点,这会在您运行 cp -R src/assets 时手动将静态资产复制到所需位置npm run build

答案 1 :(得分:0)

您应使用file-loader加载图像文件,并使用css-loader加载CSS文件。

您的Webpack将随后知道如何处理文件

如果您使用create-react-app创建了项目。在这种情况下,您只需要将CSS文件和图像文件导入到组件中即可。

答案 2 :(得分:0)

您应该在导入CSS文件时执行此操作:

import './style.css';

如果您想从头开始创建它。

在webpack.config.js中,插入其中(根据您的文件夹结构更改路径):

const path = require("path");

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

module.exports = {
  entry: path.join(__dirname, "src", "index.js"),
  output: {
    path: path.join(__dirname, "build"),
    filename: "index.bundle.js"
  },
  mode: process.env.NODE_ENV || "development",
  resolve: { modules: [path.resolve(__dirname, "src"), "node_modules"] },
  devServer: {
    contentBase: path.join(__dirname, "src"),
    hot: true,
    port: 3000
  },
  module: {
    rules: [
      {
        // this is so that we can compile any React,
        // ES6 and above into normal ES5 syntax
        test: /\.(js|jsx)$/,
        // we do not want anything from node_modules to be compiled
        exclude: /node_modules/,
        use: {
          loader: "babel-loader"
        }
      },
      {
        test: /\.(css|scss)$/,
        use: [
          "style-loader", // creates style nodes from JS strings
          "css-loader", // translates CSS into CommonJS
          "sass-loader" // compiles Sass to CSS, using Node Sass by default
        ]
      },
      {
        test: /\.(jpg|jpeg|png|gif|mp3|svg)$/,
        loaders: ["file-loader"]
      }
    ]
  },
  plugins: [
    new HtmlWebpackPlugin({
      template: path.join(__dirname, "src", "index.html")
    })
  ]
};

并编辑.babelrc以仅包含以下内容:

{
  "presets": ["@babel/env", "@babel/react"],
  "plugins": ["@babel/plugin-proposal-class-properties"]
}

您的package.json也应列出以下开发依赖项:

@ babel / core,@ babel / node,@ babel / plugin-proposal-class-properties,@ babel / preset-env,@ babel / preset-react,babel-jest,babel-loader,css-loader,文件加载器,html-webpack-plugin,路径,样式加载器,webpack,webpack-cli,webpack-dev-server

如果这没有帮助,请将链接粘贴到您的github存储库中。我会看看。