尝试从与插入的模块不同的Nodejs模块中从redis中检索时,我得到“模块未找到错误”:
ERROR in ./~/redis/index.js
Module not found: Error: Cannot resolve module 'net' in E:\Code-
Asst\node_modules\redis
@ ./~/redis/index.js 3:10-24
ERROR in ./~/redis/index.js
Module not found: Error: Cannot resolve module 'tls' in E:\Code-
Asst\node_modules\redis
@ ./~/redis/index.js 4:10-24
ERROR in ./~/redis/index.js
Module not found: Error: Cannot resolve module 'net' in E:\Code-
Asst\node_modules\redis
@ ./~/redis/index.js 3:10-24
ERROR in ./~/redis/index.js
Module not found: Error: Cannot resolve module 'tls' in E:\Code-
Asst\node_modules\redis
@ ./~/redis/index.js 4:10-24
ERROR in ./~/redis-parser/lib/hiredis.js
Module not found: Error: Cannot resolve module 'hiredis' in E:\Code-
Asst\node_modules\redis-parser\lib
@ ./~/redis-parser/lib/hiredis.js 3:14-32
我将此添加到我的webpack配置中。
node: {
console: 'empty',
fs: 'empty',
net: 'empty',
tls: 'empty',
},
现在只报告此错误。
ERROR in ./~/redis-parser/lib/hiredis.js
Module not found: Error: Cannot resolve module 'hiredis' in E:\Code-
Asst\node_modules\redis-parser\lib
@ ./~/redis-parser/lib/hiredis.js 3:14-32
我按照http://jlongster.com/Backend-Apps-with-Webpack--Part-I的建议 现在我的webpack.config.js就是这个。
var path = require('path');
var webpack = require('webpack');
var HtmlWebpackPlugin = require('html-webpack-plugin');
var webpack = require('webpack');
var path = require('path');
var fs = require('fs');
var nodeModules = {};
fs.readdirSync('node_modules')
.filter(function(x) {
return ['.bin'].indexOf(x) === -1;
})
.forEach(function(mod) {
nodeModules[mod] = 'commonjs ' + mod;
});
module.exports = {
devtool: 'cheap-module-eval-source-map',
entry: {
app: [
'webpack/hot/dev-server',
'webpack-hot-middleware/client?reload=true',
path.join(__dirname, 'webclient', 'clientapp.jsx')
]
},
target: 'node',
output: {
path: path.join(__dirname, 'webclient', 'dist'),
publicPath: '/dist/',
filename: 'bundle.js'
},
externals: nodeModules,
module: {
loaders: [
{
test: /\.jsx$/,
loaders: ['babel?presets[]=react,presets[]=es2015,presets[]=stage-0']
}, {
test: /\.css$/,
loader: 'style-loader!css-loader'
}, {
test: /\.(jpe?g|png|gif|svg)$/i,
loaders: ['file-loader']
}, {
test: /\.json$/,
loaders: ['json-loader']
}
// other loader
]
},
resolve: {
extensions: ['', '.js', '.jsx', '/index.js', '/index.jsx']
},
node: {
console: 'empty',
fs: 'empty',
net: 'empty',
tls: 'empty',
},
plugins: [
new webpack.optimize.OccurenceOrderPlugin(),
new webpack.HotModuleReplacementPlugin(),
new webpack.NoErrorsPlugin(),
new HtmlWebpackPlugin({template:
path.resolve('./webclient/index.html')})
]
};
我的构建和服务器启动没有错误,但在浏览器上,我得到了这个:
Uncaught ReferenceError: require is not defined
任何帮助都将受到高度赞赏 - 在过去的几天里陷入困境并陷入困境
我在package.json中的webpack依赖项是:
"webpack": "^1.13.2",
"webpack-dev-middleware": "^1.8.4",
"webpack-dev-server": "^1.16.1",
"webpack-hot-middleware": "^2.13.0"
答案 0 :(得分:2)
问题是您正在尝试在浏览器中运行后端应用程序(为Node.JS制作)。 target: 'node'
告诉webpack不要触及任何内置节点模块(例如fs
或net
,基本上所有错误),因此它们保持正常requires
浏览器中不存在require is not defined
错误。
从您的webpack配置看起来您正在构建一个前端应用,但您想要使用redis
。这根本不可能。您不能在浏览器中拥有需要内置节点模块的模块。如果您考虑一下,它就非常有意义,例如您无法从客户端访问文件系统。
您需要做的是构建一个前端应用程序和一个后端应用程序,然后将您想要的数据传递到redis
,例如使用REST API。