Firebase/auth 导入源地图警告

Question

我正在使用 firebase 库 v7.15.5 构建一个反应应用程序，当我导入“firebase/auth”时，它工作正常，但它在终端中向我发出警告：

WARNING in ./node_modules/@firebase/auth/dist/auth.esm.js
Module Warning (from ./node_modules/source-map-loader/dist/cjs.js):
Failed to parse source map from 'D:\Projects\DeparturesSchedule\node_modules\@firebase\auth\dist\ [synthetic:es6\promise\promise] ' file: Error: ENOENT: no such file or directory, open 'D:\Projects\DeparturesSchedule\node_modules\@firebase\auth\dist\ [synthetic:es6\promise\promise] '
 @ ./node_modules/firebase/auth/dist/index.esm.js 1:0-24
 @ ./src/utils/firebase/firebase.ts
 @ ./src/store/actions/appProps/index.ts
 @ ./src/pages/schedule/index.tsx
 @ ./src/components/app/index.tsx
 @ ./src/index.tsx
 @ multi ./src/index.tsx

WARNING in ./node_modules/@firebase/auth/dist/auth.esm.js
Module Warning (from ./node_modules/source-map-loader/dist/cjs.js):
Failed to parse source map from 'D:\Projects\DeparturesSchedule\node_modules\@firebase\auth\dist\ [synthetic:es6\util\arrayiterator] ' file: Error: ENOENT: no such file or directory, open 'D:\Projects\DeparturesSchedule\node_modules\@firebase\auth\dist\ [synthetic:es6\util\arrayiterator] '
 @ ./node_modules/firebase/auth/dist/index.esm.js 1:0-24
 @ ./src/utils/firebase/firebase.ts
 @ ./src/store/actions/appProps/index.ts
 @ ./src/pages/schedule/index.tsx
 @ ./src/components/app/index.tsx
 @ ./src/index.tsx
 @ multi ./src/index.tsx

WARNING in ./node_modules/@firebase/auth/dist/auth.esm.js
Module Warning (from ./node_modules/source-map-loader/dist/cjs.js):
Failed to parse source map from 'D:\Projects\DeparturesSchedule\node_modules\@firebase\auth\dist\ [synthetic:es6\util\makeiterator] ' file: Error: ENOENT: no such file or directory, open 'D:\Projects\DeparturesSchedule\node_modules\@firebase\auth\dist\ [synthetic:es6\util\makeiterator] '
 @ ./node_modules/firebase/auth/dist/index.esm.js 1:0-24
 @ ./src/utils/firebase/firebase.ts
 @ ./src/store/actions/appProps/index.ts
 @ ./src/pages/schedule/index.tsx
 @ ./src/components/app/index.tsx
 @ ./src/index.tsx
 @ multi ./src/index.tsx

WARNING in ./node_modules/@firebase/auth/dist/auth.esm.js
Module Warning (from ./node_modules/source-map-loader/dist/cjs.js):
Failed to parse source map from 'D:\Projects\DeparturesSchedule\node_modules\@firebase\auth\dist\ [synthetic:util\defineproperty] ' file: Error: ENOENT: no such file or directory, open 'D:\Projects\DeparturesSchedule\node_modules\@firebase\auth\dist\ [synthetic:util\defineproperty] '
 @ ./node_modules/firebase/auth/dist/index.esm.js 1:0-24
 @ ./src/utils/firebase/firebase.ts
 @ ./src/store/actions/appProps/index.ts
 @ ./src/pages/schedule/index.tsx
 @ ./src/components/app/index.tsx
 @ ./src/index.tsx
 @ multi ./src/index.tsx

WARNING in ./node_modules/@firebase/auth/dist/auth.esm.js
Module Warning (from ./node_modules/source-map-loader/dist/cjs.js):
Failed to parse source map from 'D:\Projects\DeparturesSchedule\node_modules\@firebase\auth\dist\ [synthetic:util\global] ' file: Error: ENOENT: no such file or directory, open 'D:\Projects\DeparturesSchedule\node_modules\@firebase\auth\dist\ [synthetic:util\global] '
 @ ./node_modules/firebase/auth/dist/index.esm.js 1:0-24
 @ ./src/utils/firebase/firebase.ts
 @ ./src/store/actions/appProps/index.ts
 @ ./src/pages/schedule/index.tsx
 @ ./src/components/app/index.tsx
 @ ./src/index.tsx
 @ multi ./src/index.tsx

WARNING in ./node_modules/@firebase/auth/dist/auth.esm.js
Module Warning (from ./node_modules/source-map-loader/dist/cjs.js):
Failed to parse source map from 'D:\Projects\DeparturesSchedule\node_modules\@firebase\auth\dist\ [synthetic:util\polyfill] ' file: Error: ENOENT: no such file or directory, open 'D:\Projects\DeparturesSchedule\node_modules\@firebase\auth\dist\ [synthetic:util\polyfill] '
 @ ./node_modules/firebase/auth/dist/index.esm.js 1:0-24
 @ ./src/utils/firebase/firebase.ts
 @ ./src/store/actions/appProps/index.ts
 @ ./src/pages/schedule/index.tsx
 @ ./src/components/app/index.tsx
 @ ./src/index.tsx
 @ multi ./src/index.tsx
Child html-webpack-plugin for "index.html":
     1 asset
    Entrypoint undefined = index.html
       4 modules
i ｢wdm｣: Compiled with warnings.

这是文件的代码，我在其中初始化 firebase 模块：

import app from 'firebase/app';
import 'firebase/database';
import 'firebase/auth';

const config = {
  apiKey: process.env.API_KEY,
  authDomain: process.env.AUTH_DOMAIN,
  databaseURL: process.env.DB_URL,
  storageBucket: process.env.STORAGE_BUCKET,
};

app.initializeApp(config);

const database = app.database();
const auth = app.auth();

export { database, auth };

试图删除 node_modules 并重新安装所有，但它并没有解决问题。 也许我应该以不同的方式导入它或配置 webpack 或 tsconfig？ 我不知道。

感谢帮助。

Answer 1

如果您绝对需要源映射（我不认为您真的需要，因为您的解决方案是禁用它们），您可以为 firebase（或只是 firebase/auth）添加排除规则。 示例（自行构建）：

{
    enforce: "pre",
    test: /\.js$/,
    loader: "source-map-loader",
    exclude: /node_modules\/@firebase/ //to exclude firebase from source-map
    exclude: /node_modules\/@firebase\/auth/ //to just exclude firebase auth from source-map
  },

注意：仅使用上述排除规则之一

Answer 2

通过从 webpack.config 中删除这些代码行解决了问题

{
    enforce: "pre",
    test: /\.js$/,
    loader: "source-map-loader"
  },

Answer 3

if(react / package.json / react-scripts >= ^5.0) {
  
  [ downgrade ]
  react-scripts -> ^4.0.3

  npm install react-scripts@4
  
}

Answer 4

如果您不想再看到此警告，可能的解决方案是添加此修复程序，编辑文件 node_modules/react-scripts/config/webpack.config.js，并将其粘贴在行性能之后：false，

 ignoreWarnings: [ // Ignore warnings raised by source-map-loader. // some third party packages may ship miss-configured sourcemaps, that interrupts the build // See: https://github.com/facebook/create-react-app/discussions/11278#discussioncomment-1780169 /** * * @param {import('webpack').WebpackError} warning * @returns {boolean} */ function ignoreSourcemapsloaderWarnings(warning) { return ( warning.module && warning.module.resource.includes('node_modules') && warning.details && warning.details.includes('source-map-loader') ); }, ],

我在https://github.com/facebook/create-react-app/pull/11752#issuecomment-1146687183上找到了这个

Answer 5

当我调查这些警告时，我注意到其中一些提到了 polyfill（尽管不是全部）。 较旧的 webpack 版本默认包含用于 node.js 核心模块的 polyfill。 从 webpack 5 开始，情况并非如此。 这可能与这些警告有关。

参考： https://github.com/facebook/create-react-app/issues/11756

就我而言，使用 webpack 4 而不是 webpack 5 消除了警告并且没有破坏任何东西。 这可能是一个解决方案，只要您的代码不需要网页 5+。

如果您想尝试此解决方案，您需要：

1. 从您的 package.json 中删除以下依赖项：“react-scripts”：“5.0.0”，（您的版本可能更高）

2. 将以下依赖项添加到您的 package.json：“react-scripts”：“4.0.3”，

3. 删除你的 node_modules 文件夹

4. 运行 npm 安装