我在我的webpack项目中使用Postgres和Sequelize。我遇到了一个错误列表,似乎webpack试图捆绑sequelize或postgres(pg)包:
ERROR in ./~/pg/lib/connection.js
Module not found: Error: Cannot resolve module 'net' in /Users/dace/Code/personal/my_project/node_modules/pg/lib
@ ./~/pg/lib/connection.js 1:10-24
ERROR in ./~/pg/lib/connection.js
Module not found: Error: Cannot resolve module 'tls' in /Users/dace/Code/personal/my_project/node_modules/pg/lib
@ ./~/pg/lib/connection.js 78:14-28
ERROR in ./~/pg/lib/native/index.js
Module not found: Error: Cannot resolve module 'pg-native' in /Users/dace/Code/personal/my_project/node_modules/pg/lib/native
@ ./~/pg/lib/native/index.js 1:13-33
ERROR in ./~/pg/lib/connection-parameters.js
Module not found: Error: Cannot resolve module 'dns' in /Users/dace/Code/personal/my_project/node_modules/pg/lib
@ ./~/pg/lib/connection-parameters.js 2:10-24
ERROR in ./~/pgpass/lib/index.js
Module not found: Error: Cannot resolve module 'fs' in /Users/dace/Code/personal/my_project/node_modules/pgpass/lib
@ ./~/pgpass/lib/index.js 4:9-22
在我的webpack的dev.config.js文件中,我有:
var path = require('path');
module.exports = {
entry: path.join(__dirname, '..', 'src', 'index.js'),
output: {
publicPath: '/build/',
path: path.join(__dirname, '..', 'dist', 'build'),
filename: 'bundle.js',
},
module: {
loaders: [
{
test: /\.js?$/,
exclude: /node_modules/,
loader: ['babel'],
query: {
presets: ['react', 'es2015'],
},
},
],
},
};
然后在我的index.js中我有:
var Sequelize = require('sequelize');
var connection = new Sequelize('dev', 'dace', 'root', {
dialect: 'postgres',
});
var Article = connection.define('article', {
name: Sequelize.STRING,
})
connection.sync().then(function() {
Article.create({
name: 'Dace'
});
});
我猜我需要保持webpack不会尝试捆绑sequelize或pg,因为当我从项目中完全删除webpack时它会起作用。有没有办法我可以配置webpack忽略在我的应用程序中捆绑这些包?
谢谢!
答案 0 :(得分:3)
您不应该使用客户端代码中处理数据库,文件系统等的任何内容。例如fs
模块(即filesystem
)是仅在node
环境中定义的内容,浏览器没有任何线索,fs
可能是什么。 net
也是如此(在浏览器中实现方式不同或根本没有实现)。难怪webpack
对此感到困惑:)
我的建议:将代码重写为客户端,服务器和公共部分;确保客户端和服务器部件只在节点/浏览器环境中做有意义的事情。