我正在使用create-react-app。我试图从我的src/components内部的文件中调用我的公共文件夹中的图像。我收到这个错误信息。

./src/components/website_index.js模块未找到:你试图 import ../../public/images/logo/WC-BlackonWhite.jpg 在项目src/目录之外。国外的相对进口 Src /不支持。您可以将它移动到src/,或者添加一个 从项目的node_modules/到它的符号链接。

从“../../public/images/logo_2016.png”导入logo; <img className="Header-logo" src={logo} alt=" logo" />

我读过很多东西,说你可以做一个导入的路径,但这仍然不是为我工作。任何帮助都将不胜感激。我知道有很多这样的问题,但他们都告诉我导入标志或形象,所以很明显,我在大局中遗漏了一些东西。


当前回答

安装这两个包

npm i --save-dev react-app-rewired customize-cra

package.json

"scripts": {
    - "start": "react-scripts start"
    + "start": "react-app-rewired start"
},

config-overrides.js

const { removeModuleScopePlugin } = require('customize-cra');

module.exports = function override(config, env) {
    if (!config.plugins) {
        config.plugins = [];
    }
    removeModuleScopePlugin()(config);

    return config;
};

其他回答

我认为Lukas Bach的解决方案使用react-app-rewired来修改webpack配置是一个很好的方法,但是,我不会排除整个ModuleScopePlugin,而是将可以从src导入的特定文件列入白名单:

config-overrides.js

const ModuleScopePlugin = require("react-dev-utils/ModuleScopePlugin");
const path = require("path");

module.exports = function override(config) {
  config.resolve.plugins.forEach(plugin => {
    if (plugin instanceof ModuleScopePlugin) {
      plugin.allowedFiles.add(path.resolve("./config.json"));
    }
  });

  return config;
};

再加上Bartek Maciejiczek的回答,下面是Craco的情况:

const ModuleScopePlugin = require("react-dev-utils/ModuleScopePlugin");
const path = require("path");

module.exports = {
  webpack: {
    configure: webpackConfig => {
      webpackConfig.resolve.plugins.forEach(plugin => {
        if (plugin instanceof ModuleScopePlugin) {
          plugin.allowedFiles.add(path.resolve("./config.json"));
        }
      });
      return webpackConfig;
    }
  }
};

我之前的解决方案适用于Webpack 4,但不适用于Webpack 5。在浏览了从那时起积累的解决方法之后,我发现下面的方法非常简单(而且似乎是可扩展的)。

import { CracoAliasPlugin } from 'react-app-alias';

const cracoConfig = {
  plugins: [
    {
      plugin: CracoAliasPlugin,
      options: {
        alias: { '~': './' },
      },
    },
  ],
}

然后像这样导入:

import whatever from '~/<path-to-file>';

如果您只需要导入单个文件,如README。Md或package。json,那么它可以显式地添加到ModuleScopePlugin()

配置/ paths.js

const resolveApp = relativePath => path.resolve(appDirectory, relativePath);
module.exports = {
  appPackageJson: resolveApp('package.json'),
  appReadmeMD:    resolveApp('README.md'),
};

Config /webpack.config.dev.js + Config /webpack.config.prod.js

module.exports = {
  resolve: {
    plugins: [
      // Prevents users from importing files from outside of src/ (or node_modules/).
      // This often causes confusion because we only process files within src/ with babel.
      // To fix this, we prevent you from importing files out of src/ -- if you'd like to,
      // please link the files into your node_modules/ and let module-resolution kick in.
      // Make sure your source files are compiled, as they will not be processed in any way.
      new ModuleScopePlugin(paths.appSrc, [
          paths.appPackageJson,
          paths.appReadmeMD         // README.md lives outside of ./src/ so needs to be explicitly included in ModuleScopePlugin()
      ]),
    ]
  }
}

有一些答案提供了react-app-rewired的解决方案,但customize-cra包括一个removeModuleScopePlugin() API,它更优雅一些。(这是相同的解决方案,但被customize-cra包抽象了。)

NPM I——save-dev react-app-rewired customize-cra

package.json

"scripts": {
    - "start": "react-scripts start"
    + "start": "react-app-rewired start",
    ...
},

config-overrides.js

const { removeModuleScopePlugin } = require('customize-cra')

module.exports = removeModuleScopePlugin()

react-app-rewired包可以用来删除插件。这样你就不用弹射了。

按照npm包页面上的步骤(安装包并翻转包中的调用)。Json文件),并使用类似于这个的config-override .js文件:

const ModuleScopePlugin = require('react-dev-utils/ModuleScopePlugin');

module.exports = function override(config, env) {
    config.resolve.plugins = config.resolve.plugins.filter(plugin => !(plugin instanceof ModuleScopePlugin));

    return config;
};

这将从使用的WebPack插件中删除ModuleScopePlugin,但保留其余部分,并消除了弹出的必要性。