我有两个 React 项目:
- 一个 React 组件(使用 webpack 构建)
- 一个 React 测试项目 (create-react-app)
当导入 1 到 2 时编译失败
Module not found: Can't resolve 'ReactDOM'
组件项目的 Webpack 配置:
var path = require('path');
module.exports = {
entry: './src/index.tsx',
output: {
path: path.resolve(__dirname, 'build'),
filename: 'index.js'
},
devtool: "source-map",
resolve: {
extensions: [".ts", ".tsx", ".js", ".json"]
},
module: {
rules: [
{ test: /\.tsx?$/, loader: "awesome-typescript-loader" },
{ test: /(\.css$)/, loaders: ['style-loader', 'css-loader'] },
{ test: /\.(png|woff|woff2|eot|ttf|svg)$/, loader: 'url-loader?limit=100000' },
{ enforce: "pre", test: /\.js$/, loader: "source-map-loader" }
]
},
externals: {
'react': 'commonjs react',
'react-dom': 'ReactDOM'
}
};
我曾尝试删除上面的 externals
部分,以便捆绑 ReactDOM,但这似乎也无法解决问题。理想情况下,React 不需要捆绑。 ReactDOM 不是组件项目中的导入。
组件项目的package.json:
{
"name": "component",
"version": "0.1.0",
"main": "build/index.js",
"dependencies": {
"react-grid-layout": "^0.16.0",
"react-redux": "^5.0.6",
"redux": "^3.7.2",
"semantic-ui-css": "^2.2.12",
"semantic-ui-react": "^0.75.1"
},
"scripts": {
"test": "echo \"Error: no test specified\" && exit 1",
"start": "webpack --watch",
"build": "webpack"
},
"devDependencies": {
"@types/react": "^16.0.20",
"@types/react-dom": "^16.0.2",
"@types/react-grid-layout": "^0.16.0",
"@types/react-redux": "^5.0.12",
"awesome-typescript-loader": "^3.3.0",
"react-dom": "^16.0.0",
"react": "^16.0.0",
"babel-cli": "^6.24.1",
"babel-core": "^6.24.1",
"babel-loader": "^7.0.0",
"babel-plugin-transform-object-rest-spread": "^6.23.0",
"babel-plugin-transform-react-jsx": "^6.24.1",
"babel-preset-env": "^1.5.1",
"css-loader": "^0.28.7",
"file-loader": "^1.1.5",
"source-map-loader": "^0.2.3",
"style-loader": "^0.19.0",
"typescript": "^2.6.1",
"webpack": "^2.6.1",
"url-loader": "^0.6.2"
}
}
在我的测试项目中我有
import * as React from 'react';
import * as ReactDOM from 'react-dom';
import Component from 'component'
如果我删除对 Component 的依赖,测试项目构建良好。一旦我导入组件,完整的错误消息是:
./node_modules/component/build/index.js
Module not found: Can't resolve 'ReactDOM' in '/mnt/c/Users/a8345/ws/test/node_modules/component/build'
因为我使用的是 typescript,所以我安装了 @types/react-dom。如果我有 import ReactDOM from 'react-dom'
我得到 ./src/index.tsx (2,8): error TS1192: Module '"/mnt/c/Users/a8345/ws/test/node_modules/@types/react-dom/i ndex"' 没有默认导出
.. import * as ReactDOM from 'react-dom'
在测试项目,除非我尝试导入我自己的组件。
我怀疑这是构建问题而不是导入问题,我应该如何最好地配置它以确保组件使用宿主项目中的 ReactDOM 而不是将其捆绑到组件中?
提前致谢
最佳答案
尝试
externals: {
'react': {commonjs: 'react'},
'react-dom': {commonjs: 'react-dom'}
}
关于javascript - 找不到模块 : Can't resolve 'ReactDOM' ,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/47168446/