Create a webpack loadable plugin.

optionsOptional options
options.filenameStats filename (default to loadable-stats.json)
options.outputAssetAlways write stats file to the output.path directory. Defaults to true
options.writeToDiskAccepts boolean or object. Always write stats file to disk. Default to false.
options.writeToDisk.filenameWrite assets to disk at given filename location
new LoadablePlugin({ filename: 'stats.json', writeToDisk: true })

Writing file to disk can be useful if you are using razzle or webpack-dev-server.