webpack-bundle-tracker

Spits out some stats about webpack compilation process to a file.

Install

npm install --save-dev webpack-bundle-tracker

Usage

var BundleTracker  = require('webpack-bundle-tracker');
module.exports = {
        context: __dirname,
    entry: {
      app: ['./app']
    },
    
    output: {
        path: require("path").resolve('./assets/bundles/'),
        filename: "[name]-[hash].js",
        publicPath: 'http://localhost:3000/assets/bundles/',
    },
    
    plugins: [
      new BundleTracker({path: __dirname, filename: './assets/webpack-stats.json'})
    ]
}

./assets/webpack-stats.json will look like,

{
  "status":"done",
  "chunks":{
   "app":[{
      "name":"app-0828904584990b611fb8.js",
      "publicPath":"http://localhost:3000/assets/bundles/app-0828904584990b611fb8.js",
      "path":"/home/user/project-root/assets/bundles/app-0828904584990b611fb8.js"
    }]
  }
}

In case webpack is still compiling, it'll look like,

{
  "status":"compiling",
}

And errors will look like,

{
  "status": "error",
  "file": "/path/to/file/that/caused/the/error",
  "error": "ErrorName", 
  "message": "ErrorMessage"
}

ErrorMessage shows the line and column that caused the error.

And in case logTime option is set to true, the output will look like,

{
  "status":"done",
  "chunks":{
   "app":[{
      "name":"app-0828904584990b611fb8.js",
      "publicPath":"http://localhost:3000/assets/bundles/app-0828904584990b611fb8.js",
      "path":"/home/user/project-root/assets/bundles/app-0828904584990b611fb8.js"
    }]
  },
  "startTime":1440535322138,
  "endTime":1440535326804
}