Trying to use mongoose with node-webkit target on Webpack

I tried to get an answer on StackOverflow, but nobody seemed to have an idea. So I post this as a bug, since I can’t get it to work:

I use webpack and target it’s build output for node-webkit. I want to require the mongoose module inside my project to connect to mongodb, but it always states some errors when I try to pack the project:

WARNING in ./~/mongoose/~/mongodb/~/mongodb-core/~/bson/~/bson-ext/ext/index.js
Module not found: Error: Cannot resolve 'file' or 'directory' ./win32/x64/bson in /Users/Johannes/Documents/Development/holmes/node_modules/mongoose/node_modules/mongodb/node_modules/mongodb-core/node_modules/bson/node_modules/bson-ext/ext
 @ ./~/mongoose/~/mongodb/~/mongodb-core/~/bson/~/bson-ext/ext/index.js 6:10-37

WARNING in ./~/mongoose/~/mongodb/~/mongodb-core/~/bson/~/bson-ext/ext/index.js
Module not found: Error: Cannot resolve 'file' or 'directory' ./win32/ia32/bson in /Users/Johannes/Documents/Development/holmes/node_modules/mongoose/node_modules/mongodb/node_modules/mongodb-core/node_modules/bson/node_modules/bson-ext/ext
 @ ./~/mongoose/~/mongodb/~/mongodb-core/~/bson/~/bson-ext/ext/index.js 8:10-38

WARNING in ./~/mongoose/~/mongodb/~/mongodb-core/~/bson/~/bson-ext/ext/index.js
Module not found: Error: Cannot resolve 'file' or 'directory' ../build/Release/bson in /Users/Johannes/Documents/Development/holmes/node_modules/mongoose/node_modules/mongodb/node_modules/mongodb-core/node_modules/bson/node_modules/bson-ext/ext
 @ ./~/mongoose/~/mongodb/~/mongodb-core/~/bson/~/bson-ext/ext/index.js 10:10-42 15:9-41

ERROR in ./~/mongoose/~/mongodb/~/mongodb-core/~/kerberos/lib/kerberos.js
Module not found: Error: Cannot resolve 'file' or 'directory' ../build/Release/kerberos in /Users/Johannes/Documents/Development/holmes/node_modules/mongoose/node_modules/mongodb/node_modules/mongodb-core/node_modules/kerberos/lib
 @ ./~/mongoose/~/mongodb/~/mongodb-core/~/kerberos/lib/kerberos.js 1:15-51

ERROR in ./~/mongoose/~/mongodb/~/mongodb-core/~/kerberos/lib/win32/wrappers/security_credentials.js
Module not found: Error: Cannot resolve 'file' or 'directory' ../../../build/Release/kerberos in /Users/Johannes/Documents/Development/holmes/node_modules/mongoose/node_modules/mongodb/node_modules/mongodb-core/node_modules/kerberos/lib/win32/wrappers
 @ ./~/mongoose/~/mongodb/~/mongodb-core/~/kerberos/lib/win32/wrappers/security_credentials.js 1:32-74

ERROR in ./~/mongoose/~/mongodb/~/mongodb-core/~/kerberos/lib/win32/wrappers/security_context.js
Module not found: Error: Cannot resolve 'file' or 'directory' ../../../build/Release/kerberos in /Users/Johannes/Documents/Development/holmes/node_modules/mongoose/node_modules/mongodb/node_modules/mongodb-core/node_modules/kerberos/lib/win32/wrappers
 @ ./~/mongoose/~/mongodb/~/mongodb-core/~/kerberos/lib/win32/wrappers/security_context.js 1:28-70

ERROR in ./~/mongoose/~/mongodb/~/mongodb-core/~/kerberos/lib/win32/wrappers/security_buffer.js
Module not found: Error: Cannot resolve 'file' or 'directory' ../../../build/Release/kerberos in /Users/Johannes/Documents/Development/holmes/node_modules/mongoose/node_modules/mongodb/node_modules/mongodb-core/node_modules/kerberos/lib/win32/wrappers
 @ ./~/mongoose/~/mongodb/~/mongodb-core/~/kerberos/lib/win32/wrappers/security_buffer.js 1:27-69

ERROR in ./~/mongoose/~/mongodb/~/mongodb-core/~/kerberos/lib/win32/wrappers/security_buffer_descriptor.js
Module not found: Error: Cannot resolve 'file' or 'directory' ../../../build/Release/kerberos in /Users/Johannes/Documents/Development/holmes/node_modules/mongoose/node_modules/mongodb/node_modules/mongodb-core/node_modules/kerberos/lib/win32/wrappers
 @ ./~/mongoose/~/mongodb/~/mongodb-core/~/kerberos/lib/win32/wrappers/security_buffer_descriptor.js 1:37-79

It seems like webpack is unable to load .node files, so I installed the node-loader and added to my webpack.config.js:

module.exports = {
    entry: './ui/index.jsx',
    target: 'node-webkit',
    output: {
        path: __dirname + '/build-ui',
        filename: 'app.js',
        publicPath: '/assets/'
    },
    module: {
        loaders: [
            {
                test: /\.jsx$/,
                loader: 'jsx-loader?insertPragma=React.DOM&harmony'
            },
            {
                test: /\.css$/,
                loader: "style-loader!css-loader"
            },
            {
                test: /\.scss$/,
                loader: "style-loader!css-loader!sass-loader"
            },
            {
                test: /\.(png|jpg)$/,
                loader: 'url-loader?limit=8192'
            },
            {
                test: /\.json$/,
                loader: "json-loader"
            },
            {
                test: /\.target.mk$/,
                loader: "raw-loader"
            },
            {
                test: /\.node$/,
                loader: "node-loader"
            }
        ]
    },
    resolve: {
        extensions: ['', '.js', '.jsx']
    }
};

But it still throws that errors and warnings. Am I missing something? Or is this a bug?

[mxklabs]

I’m not sure how helpful this is to anybody but I’ve been stuck on this issue (web-packing mongoose) for some time and came up with a resolution I’ve not seen mentioned here, so I thought I’d share it.

The primary issue I’ve been stuck on is web-packing muri, a dependency of mongoose. This is because node_modules/muri/lib/index.js reads muri’s package.json in order to populate a version number:

require('fs').readFileSync(__dirname + '/../package.json', 'utf8')

The reason this was a problem for me is that after webpack does its business the resulting javascript file still wants to read muri’s package.json but fails miserably.

I’ve resolved this by using a browserify webpack loader (brfs) which embeds files read by the fs module into the code. For details on how to use this in webpack read this.

Note that the following rule helped me successfully pack muri:

  module: {
    rules: [
      {
        test: /\.js$/,
        loader: "transform-loader?brfs",
        include: path.resolve(__dirname, "node_modules/muri/lib/index.js")
      }
   ]
}

I hope this is useful to someone!

[croqaz]

Found the problem !! The “kerberos” dependency was not installed correctly. I tried to require the module by hand and I couldn’t. I tried to install it and i had error from https://github.com/christkv/kerberos/issues/21 ; I installed “libkrb5-dev”, then installed “kerberos” again and now mongoose works with just 1 warning:

WARNING in ./~/mongoose/lib/drivers/index.js
Critical dependencies:
8:11-74 the request of a dependency is an expression
 @ ./~/mongoose/lib/drivers/index.js 8:11-74

WARNING in ./~/mongoose/lib/drivers/SPEC.md
Module parse failed: /home/cro/Dev/akasha-electron/node_modules/mongoose/lib/drivers/SPEC.md Line 2: Unexpected token ILLEGAL
You may need an appropriate loader to handle this file type.
| 
| # Driver Spec
| 
| TODO
 @ ./~/mongoose/lib/drivers ^\.\/.*$