我正在學習 webpack 以在沒有 create-react-app 的情況下開始我的 react 專案。一切似乎都正常，但是當我在之后打開控制臺時npm run dev，我看到了錯誤訊息：Uncaught TypeError: Failed to resolve module specifier "react-dom/client". Relative references must start with either "/", "./", or "../".
以下是我的專案檔案。
webpack-react
├── dist
├── package-lock.json
├── package.json
├── public
│ └── index.html
├── src
│ ├── App.js
│ └── index.js
├── webpack.config.js
└── .babelrc
索引.html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<meta http-equiv="X-UA-Compatible" content="IE=edge" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<title>Webpack React</title>
</head>
<body>
<div id="root"></div>
<script type="module" src="../src/index.js"></script>
</body>
</html>
應用程式.js
function App() {
return (
<div>
<h1>Welcome to webpack</h1>
</div>
);
}
export default App;
index.js
import ReactDOM from "react-dom/client";
import App from "./App";
const root = document.querySelector("#root");
ReactDOM.createRoot(root).render(<App />);
.babelrc
{
"presets": [
"@babel/preset-env",
["@babel/preset-react", { "runtime": "automatic" }]
]
}
webpack.config.js
const path = require("path");
const HtmlWebpackPlugin = require("html-webpack-plugin");
const { CleanWebpackPlugin } = require("clean-webpack-plugin");
module.exports = {
mode: process.env.NODE_ENV || "development",
entry: "./src/index.js",
output: {
filename: "bundle.[hash].js",
path: path.resolve(__dirname, "dist"),
},
resolve: {
extensions: [".js", "jsx", ".css"],
},
module: {
rules: [
{
test: /\.(js|jsx)$/,
exclude: /node_modules/,
use: {
loader: "babel-loader",
},
},
{
test: /\.css$/,
use: ["style-loader", "css-loader"],
},
{
test: /\.html$/,
use: {
loader: "html-loader",
options: {
minimize: true,
},
},
},
],
},
plugins: [
new CleanWebpackPlugin(),
new HtmlWebpackPlugin({ template: "./public/index.html" }),
],
devServer: {
host: "localhost",
port: process.env.PORT || 3000,
open: true,
},
};
包.json
{
"name": "webpack-react",
"version": "1.0.0",
"description": "",
"main": "index.js",
"scripts": {
"dev": "webpack-dev-server",
"build": "webpack --mode production --progress"
},
"keywords": [],
"author": "",
"license": "ISC",
"devDependencies": {
"@babel/core": "^7.18.2",
"@babel/preset-env": "^7.18.2",
"@babel/preset-react": "^7.17.12",
"babel-loader": "^8.2.5",
"clean-webpack-plugin": "^4.0.0",
"css-loader": "^6.7.1",
"html-loader": "^3.1.0",
"html-webpack-plugin": "^5.5.0",
"style-loader": "^3.3.1",
"webpack": "^5.72.1",
"webpack-cli": "^4.9.2",
"webpack-dev-server": "^4.9.0"
},
"dependencies": {
"react": "^18.1.0",
"react-dom": "^18.1.0"
}
}
我發現盡管有訊息，但仍呈現反應檔案很奇怪..
uj5u.com熱心網友回復：
我相信錯誤來自這條線
<script type="module" src="../src/index.js"></script>
由于您使用 Webpack 進行捆綁，因此注入由 Webpack 處理。洗掉該行，應用程式應該仍然可以作業并且錯誤應該消失。
轉載請註明出處，本文鏈接：https://www.uj5u.com/houduan/482256.html
標籤：javascript 反应 网页包