如何将 react-native web 集成到现有的 react native 项目中

Question

我们有一个使用 typescript、react-navigation、react-native-gesture-handler、redux/toolkit 作为主要包实施的 react-native 项目

最近我们将 react-native-web 集成到我们的项目中，但它运行不正确。

我们的项目有几个问题：

导入自定义模块时无法加载它们。例如：

import MyCustomComponent from './components/MyCustomComponent'

<View style={{flex: 1, backgroundColor: 'green'}}>
  <MyCustomComponent/>     <--- does not show up, event when it contains a simple View component, we will see a blank screen
</View>

但是当我在当前文件中定义 MyCustomComponent 时，它显示没有问题：

function MyCustomComponent() {
   return(
     <View style={{flex:1, backgroundColor: 'yellow'}}></View>
   )
}

export default function MyMainComponent() {
     return (
        <View style={{flex:1, backgroundColor: 'green'}}>
           <MyCustomComponent/>      <---- this shows up
        </View>
     )
}

任何进入 redux Provider 的东西都不会再出现。

我认为我们的 webpack 配置有误，但由于我不是网络开发专家，所以我需要一些帮助来找出问题所在。这是我们的 webpack 配置：

const path = require('path');

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

const appDirectory = path.resolve(__dirname);
const {presets} = require(`${appDirectory}/../babel.config.js`);

const compileNodeModules = [
  // Add every react-native package that needs compiling
  'react-native-gesture-handler',
  'react-redux',
  'react-native-reanimated',
  'react-native-confirmation-code-field',
  'react-native-calendars',
  '@react-native-google-signin/google-signin',
  'react-native-compressor',
  'react-native-swipe-gestures',
  '@react-native-async-storage',
  'react-native-shared-element',
  '@react-navigation',
  'react-native-material-menu',
  '@reduxjs/toolkit',
  'react-navigation-shared-element',
  'react-native-collapsible-tab-view',
  'react-native-image-crop-picker',
  '@react-native-community',
  'react-nativbe-safe-area-context/lib',
  'react-native-screens',
].map(moduleName =>
  path.resolve(appDirectory, `../node_modules/${moduleName}`),
);

const babelLoaderConfiguration = {
  test: /\.js$|tsx?$/,
  // Add every directory that needs to be compiled by Babel during the build.
  include: [
    path.resolve(__dirname, '../index.web.js'), // Entry to your application
    path.resolve(__dirname, '../src/index.web.tsx'), // Change this to your main App file
    path.resolve(__dirname, '../src'),
    ...compileNodeModules,
  ],
  use: {
    loader: 'babel-loader',
    options: {
      cacheDirectory: true,
      presets,
      plugins: ['react-native-web'],
    },
  },
};

const svgLoaderConfiguration = {
  test: /\.svg$/,
  use: [
    {
      loader: '@svgr/webpack',
    },
  ],
};

const tsLoaderConfiguration = {
  test: /\.(ts|tsx|web.ts|web.tsx)?$/,
  use: [
    {
      loader: 'ts-loader',
      options: {
        transpileOnly: true,
      },
    },
  ],
};

const imageLoaderConfiguration = {
  test: /\.(gif|jpe?g|png)$/,
  use: {
    loader: 'url-loader',
    options: {
      name: '[name].[ext]',
      esModule: false,
    },
  },
};

module.exports = {
  entry: {
    app: path.join(__dirname, '../index.web.js'),
  },
  output: {
    path: path.resolve(appDirectory, 'dist'),
    publicPath: '/',
    filename: 'arcelor.bundle.js',
  },
  resolve: {
    extensions: ['.web.tsx', '.web.ts', '.tsx', '.ts', '.web.js', '.js'],
    alias: {
      'react-native$': 'react-native-web',
    },
  },
  module: {
    rules: [
      babelLoaderConfiguration,
      imageLoaderConfiguration,
      svgLoaderConfiguration,
      tsLoaderConfiguration,
    ],
  },
  plugins: [
    new HtmlWebpackPlugin({
      template: path.join(__dirname, './index.html'),
      filename: 'index.html',
      inject: 'body',
    }),
    new webpack.HotModuleReplacementPlugin(),
    new webpack.DefinePlugin({
      // See: https://github.com/necolas/react-native-web/issues/349
      // __DEV__: JSON.stringify(true),
      __DEV__: process.env.NODE_ENV !== 'production',
      process: {env: {}},
    }),
  ],
};

我正在使用 webpack@^5.65.0

任何人都可以帮我找出问题所在以及如何使 react-native-web 与我们的项目一起工作吗？谢谢

Answer 1

启动 Webpack 并从头开始运行ning 并非易事。我建议您从准备好使用像 cra or expo 这样的方法开始。然后按照您的方式进行定制。

创建 React-App

首先，安装依赖项：

yarn add react-native-web react-scripts react-dom

在public/index.html中创建一个HTML文件，并在里面放入以下内容：gh:facebook/create-react-app/cra-template

<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="utf-8" />
    <meta
      name="viewport"
      content="width=device-width, initial-scale=1, shrink-to-fit=no"
    />
    <title>Your App Title</title>
  </head>

  <body>
    <noscript>You need to enable JavaScript to run this app.</noscript>
    <div id="root"></div>
  </body>
</html>

将项目根目录中的 index.js 重命名为 index.native.js。 see
在src/index.js新建一个js文件，在里面放入以下内容：

import { AppRegistry } from "react-native";
import { App } from "./App";

AppRegistry.registerComponent(appName, () => App);
AppRegistry.runApplication("App", {
  rootTag: document.getElementById("root"),
});

运行运行ning react-scripts start

自定义

您可能需要集成预处理器，例如 react-native-reanimated/plugin to your babel config or edit your WebPack to add global variables like process.env. In order to do that you can either use react-scripts eject to have access to said configs or use tools like customize-cra。

博览会（推荐）

在我的意见中，世博会是最好的方式。 Expo 基本上是 create-react-app 但对于支持 react-native-web.

的 react-native

您可以按照 official guide.

为您的项目设置 Web 博览会

安装依赖项：

yarn add --global expo-cli
expo install react-native-web react-dom
yarn add expo

将你的根 index.js 修改成这样：

import { registerRootComponent } from 'expo';

import App from './App';

registerRootComponent(App);

此时您可以开始了。只是生锈 expo start:web.

自定义

通过运行ning expo customize:web，您可以访问 Babel 和 Webpack 配置文件。

打字稿`basePath`

如果您在 tsconfig.json 中使用 "baseUrl": "src"。你可能还需要设置 Babel。因为它不一定遵循你的 tsconfig.

// babel.config.js
module.exports = function (api) {
  api.cache(true);
  return {
    presets: ['babel-preset-expo'],
    plugins: [
      'react-native-reanimated/plugin',
      [
        'module-resolver',
        {
          root: ['src'],
          extensions: ['.tsx', 'json', '.ts', '.js'],
        },
      ],
    ],
  };
};

如何将 react-native web 集成到现有的 react native 项目中

How to integrate react-native web to an existing react native project

reactjs

webpack

react-native

react-native-web

redux-toolkit

创建 React-App

自定义

博览会（推荐）

自定义

打字稿`basePath`

如何将 react-native web 集成到现有的 react native 项目中

How to integrate react-native web to an existing react native project

reactjs

webpack

react-native

react-native-web

redux-toolkit

创建 React-App

自定义

博览会（推荐）

自定义

打字稿basePath

打字稿`basePath`