我遇到使用webpack捆绑我的应用程序的问题，虽然我已经尝试了所有的建议，但我在网站上阅读了类似的问题，我无法弄清楚是什么问题。
一切都很好。但是当我打开浏览器时显示这个错误：
未捕获的ReferenceError：未定义require
const webpack = require('webpack');
const conf = require('./gulp.conf');
const path = require('path');
const HtmlWebpackPlugin = require('html-webpack-plugin');
const FailPlugin = require('webpack-fail-plugin');
const ExtractTextPlugin = require('extract-text-webpack-plugin');
const pkg = require('../package.json');
const autoprefixer = require('autoprefixer');
const nodeExternals = require('webpack-node-externals');
module.exports = {
module: {
loaders: [
{
test: /\.json$/,
loaders: [
'json-loader'
]
},
{
test: /\.js$/,
exclude: /node_modules/,
loader: 'eslint-loader',
enforce: 'pre'
},
{
test: /\.(css|scss)$/,
loaders: ExtractTextPlugin.extract({
fallback: 'style-loader',
use: 'css-loader?minimize!sass-loader!postcss-loader'
})
},
{
test: /\.js$/,
exclude: /node_modules/,
loaders: [
'ng-annotate-loader',
'babel-loader'
]
},
{
test: /\.html$/,
loaders: [
'html-loader'
]
}
]
},
plugins: [
new webpack.optimize.OccurrenceOrderPlugin(),
new webpack.NoEmitOnErrorsPlugin(),
FailPlugin,
new HtmlWebpackPlugin({
template: conf.path.src('index.html')
}),
new webpack.optimize.UglifyJsPlugin({
output: {comments: false},
compress: {unused: true, dead_code: true, warnings: false} // eslint-disable-line camelcase
}),
new ExtractTextPlugin('index-[contenthash].css'),
new webpack.optimize.CommonsChunkPlugin({name: 'vendor'}),
new webpack.LoaderOptionsPlugin({
options: {
postcss: () => [autoprefixer]
}
})
],
target: 'node',
externals: [nodeExternals()],
output: {
path: path.join(process.cwd(), conf.paths.dist),
filename: '[name]-[hash].js'
},
entry: {
app: `./${conf.path.src('index')}`,
vendor: Object.keys(pkg.dependencies)
}
};
{
"dependencies": {
"angular": "^1.6.2",
"angular-ui-router": "1.0.0-beta.3",
"body-parser": "^1.17.2",
"cookie-parser": "^1.4.3",
"debug": "^2.6.8",
"express": "^4.15.3",
"morgan": "^1.8.2",
"pug": "^2.0.0-rc.2"
},
"devDependencies": {
"@types/angular": "^1.6.6",
"@types/angular-mocks": "^1.5.9",
"@types/angular-ui-router": "^1.1.36",
"@types/jquery": "^2.0.40",
"angular-mocks": "^1.6.2",
"autoprefixer": "^6.7.3",
"babel-core": "^6.23.1",
"babel-eslint": "^7.1.1",
"babel-loader": "^6.3.2",
"babel-plugin-istanbul": "^4.0.0",
"babel-polyfill": "^6.23.0",
"babel-preset-es2015": "^6.22.0",
"babel-preset-es2017": "^6.24.1",
"bootstrap": "^4.0.0-alpha.6",
"browser-sync": "^2.18.8",
"browser-sync-spa": "^1.0.3",
"css-loader": "^0.26.4",
"del": "^2.2.2",
"es6-shim": "^0.35.3",
"eslint": "^3.15.0",
"eslint-config-angular": "^0.5.0",
"eslint-config-xo-space": "^0.15.0",
"eslint-loader": "^1.6.1",
"eslint-plugin-angular": "^1.6.1",
"eslint-plugin-babel": "^4.0.1",
"extract-text-webpack-plugin": "^2.0.0-rc.3",
"file-loader": "^0.11.1",
"font-awesome": "^4.7.0",
"gulp": "gulpjs/gulp#4ed9a4a3275559c73a396eff7e1fde3824951ebb",
"gulp-angular-filesort": "^1.1.1",
"gulp-angular-templatecache": "^2.0.0",
"gulp-filter": "^5.0.0",
"gulp-htmlmin": "^3.0.0",
"gulp-hub": "frankwallis/gulp-hub#d461b9c700df9010d0a8694e4af1fb96d9f38bf4",
"gulp-insert": "^0.5.0",
"gulp-ng-annotate": "^2.0.0",
"gulp-sass": "^3.1.0",
"gulp-util": "^3.0.8",
"html-loader": "^0.4.4",
"html-webpack-plugin": "^2.28.0",
"jasmine": "^2.5.3",
"jquery": "^3.2.1",
"json-loader": "^0.5.4",
"karma": "^1.4.1",
"karma-angular-filesort": "^1.0.2",
"karma-coverage": "^1.1.1",
"karma-jasmine": "^1.1.0",
"karma-junit-reporter": "^1.2.0",
"karma-ng-html2js-preprocessor": "^1.0.0",
"karma-phantomjs-launcher": "^1.0.2",
"karma-phantomjs-shim": "^1.4.0",
"karma-webpack": "^2.0.2",
"mdbootstrap": "^4.3.2",
"ng-annotate-loader": "^0.2.0",
"node-sass": "^4.5.0",
"phantomjs-prebuilt": "^2.1.14",
"postcss-loader": "^1.3.1",
"sass-loader": "^6.0.1",
"style-loader": "^0.13.1",
"tether": "^1.4.0",
"url-loader": "^0.5.8",
"webpack": "^2.2.1",
"webpack-fail-plugin": "^1.0.5",
"webpack-node-externals": "^1.6.0"
},
"scripts": {
"start": "node app.js",
"build": "gulp",
"serve": "gulp serve",
"serve:dist": "gulp serve:dist",
"test": "gulp test",
"test:auto": "gulp test:auto"
},
"eslintConfig": {
"globals": {
"expect": true
},
"root": true,
"env": {
"browser": true,
"jasmine": true
},
"parser": "babel-eslint",
"extends": [
"xo-space/esnext"
]
}
}
如果有人可以提供帮助，我将感激不尽。
答案 0 :(得分：8)
答案 1 :(得分：8)
有些配置需要更改：
target: 'web', // which is by default
// externals: [nodeExternals()], remove this as it is causing problem
答案 2 :(得分：3)
使用node + express和托管窗口小部件构建后端以在客户端使用时遇到此问题。我的webpack配置分为两个，一个用于后端，一个用于前端。
const webpack = require('webpack');
const path = require('path');
const nodeExternals = require('webpack-node-externals');
const config = {
// set to false because __dirname resolving to / instead of absolute path when
// built using webpack
node: {
__dirname: false
},
module: {
rules: [
{
test: /\.js$/,
exclude: /node_modules/,
use: {
loader: 'babel-loader',
options: {
presets: ['es2015']
}
}
}
]
},
// set to development to read .env.local variables
mode: 'development'
};
const serverConfig = Object.assign({}, config, {
// set target to node to fix build warnings
target: 'node',
name: 'server',
entry: __dirname + '/src/index.js',
output: {
path: path.resolve(__dirname + '/dist'),
filename: 'index.js'
},
// webpack-node-externals package used to exclude other packages like express
// in the final bundle.js
externals: [nodeExternals()]
});
// widget.js file served from dist/widget
const widgetConfig = Object.assign({}, config, {
// set target to web for use in browsers
target: 'web',
name: 'widget',
entry: __dirname + '/widget/index.js',
output: {
path: path.resolve(__dirname + '/dist/widget/js'),
filename: 'widget.js'
}
});
module.exports = [widgetConfig, serverConfig];