Snippet for grabbing Webpack stats in JSON format when using the Node API.

webpack_profile_nodeapi.js

import webpack from 'webpack'
import {writeFileSync} from 'fs'
import {resolve} from 'path'
import config from 'webpack.config.js'
import webpackDevServer from 'webpack-dev-server'

config.profile = true

const compiler = webpack(config)

compiler.plugin('done', (stats) => {
  writeFileSync(resolve('./stats.json'), JSON.stringify(stats.toJson()), 'utf8')
})

webpackDevServer(compiler, {
  hot: true,
  inline: true,
  stats: {
    colors: true
  },
  publicPath: config.output.publicPath
})