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[英]Error deploying app on website with Webpack and Babel (shows blank page)
[英]ReactJS with Webpack Setup - App Shows A Blank Page
我在這里有一個不同的線程: React Build Tool和Dev Server來使用Webpack設置React。 似乎正在運行,但是讓html頁面顯示來自入口點app.js的代碼存在問題。 我可以看到代碼在bundle.js中。 如果我修改app.js中的任何內容,直到render方法,例如輸入錯字或某些東西,我都會在控制台上看到錯誤,但render()方法沒有任何反應。 不管我做什么,都沒有錯誤,只有空白頁沒有顯示。
app.js
import React from 'react';
import ReactDOM from 'react-dom';
export default class App extends React.Component {
render() {
return (
ReactDOM.render(<h1>Render me!</h1>,
document.getElementById('app'))
);
}
}
Index.html
<!DOCTYPE html>
<html>
<head>
<!-- Bootstrap, latest compiled and minified CSS -->
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/latest/css/bootstrap.min.css">
</head>
<body>
<div id="app"></div>
<script type="text/javascript" src='bundle.js'></script>
</body>
</html>
因此,如果我查看頁面源代碼,它只會顯示正好而不是預期的
以防萬一下面是我的webpack.config
var webpack = require('webpack');
var path = require('path');
module.exports = {
entry: {
bundle: './src/app.js'
},
output: {
path: path.join(__dirname, '/dist'),
filename: 'bundle.js'
},
module: {
loaders: [{
exclude: /node_modules/,
loader: 'babel-loader',
query: {
presets: ['react', 'es2015', 'stage-1']
}
}]
},
resolve: {
extensions: ['*', '.js', '.jsx']
}
};
這也來自我的package.json。 我相信我的bundle.js正在從內存中提供。
"scripts": {
"start": "webpack-dev-server --port 3000 --hot --inline",
"build": "webpack --progress --colors"
}
我運行npm start來編譯並啟動服務器。 我期望npm build將構建到dist文件夾,但不是。 現在,我只想以一種或另一種方式工作,這樣我就可以開始編碼了。
和.babelrc
{
"presets":[
"es2017", "react"
]
}
您正在使用WebPack 3.x嗎? 試試這個配置:
const path = require('path');
const webpack = require('webpack');
const HtmlWebpackPlugin = require('html-webpack-plugin');
const ExtractTextPlugin = require('extract-text-webpack-plugin');
const PreloadWebpackPlugin = require('preload-webpack-plugin');
const autoprefixer = require('autoprefixer');
const staticSourcePath = path.join(__dirname, 'static');
const sourcePath = path.join(__dirname);
const buildPath = path.join(__dirname, 'dist');
module.exports = {
devtool: 'source-map',
devServer: {
historyApiFallback: true,
contentBase: './'
},
entry: {
"index" :path.resolve(sourcePath, 'index.js')
},
output: {
path: path.join(__dirname, 'dist'),
filename: '[name].[chunkhash].js',
publicPath: '/'
},
resolve: {
extensions: ['.webpack-loader.js', '.web-loader.js', '.loader.js', '.js', '.jsx'],
modules: [
sourcePath,
path.resolve(__dirname, 'node_modules')
]
},
plugins: [
new webpack.DefinePlugin({
'process.env.NODE_ENV': JSON.stringify('development')
}),
new webpack.optimize.ModuleConcatenationPlugin(),
new webpack.optimize.CommonsChunkPlugin({
name: 'vendor',
filename: 'vendor.[chunkhash].js',
minChunks: Infinity
}),
new webpack.LoaderOptionsPlugin({
options: {
postcss: [
autoprefixer({
browsers: [
'last 3 version',
'ie >= 10'
]
})
],
context: staticSourcePath
}
}),
new webpack.HashedModuleIdsPlugin(),
new HtmlWebpackPlugin({
template: path.join(__dirname, 'index.html'),
path: buildPath,
excludeChunks: ['base'],
filename: 'index.html',
minify: {
collapseWhitespace: true,
collapseInlineTagWhitespace: true,
removeComments: true,
removeRedundantAttributes: true
}
}),
new PreloadWebpackPlugin({
rel: 'preload',
as: 'script',
include: 'all',
fileBlacklist: [/\.(css|map)$/, /base?.+/]
}),
new webpack.NoEmitOnErrorsPlugin()
],
module: {
rules: [
{
test: /\.(js|jsx)$/,
exclude: /node_modules/,
use: {
loader: 'babel-loader',
options: {
presets: ['env', 'react'],
}
},
include: sourcePath
},
{
test: /\.css$/,
exclude: /node_modules/,
use: ExtractTextPlugin.extract({
fallback: 'style-loader',
use: [
{ loader: 'css-loader', options: { minimize: true } },
'postcss-loader',
'sass-loader'
]
})
},
{
test: /\.(eot?.+|svg?.+|ttf?.+|otf?.+|woff?.+|woff2?.+)$/,
use: 'file-loader?name=assets/[name]-[hash].[ext]'
},
{
test: /\.(png|gif|jpg|svg)$/,
use: [
'url-loader?limit=20480&name=assets/[name]-[hash].[ext]'
],
include: staticSourcePath
}
]
}
};
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