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A Webpack plugin, to help measure the speed of your other loaders and plugins

Package Exports

  • speed-measure-webpack-plugin

This package does not declare an exports field, so the exports above have been automatically detected and optimized by JSPM instead. If any package subpath is missing, it is recommended to post an issue to the original package (speed-measure-webpack-plugin) to support the "exports" field. If that is not possible, create a JSPM override to customize the exports field for this package.

Readme

Speed Measure Webpack Plugin

(this plugin is not yet stable, and not safe for production)

This plugin measures your webpack build speed, giving an output like this:

----------------------------
General output time took 1.01 minutes

IgnorePlugin took 0.62 seconds
ForceCaseSensitivityPlugin took 20.27 seconds
SpriteLoaderPlugin took 30 milliseconds
ExtractTextPlugin took 9.44 seconds
DefinePlugin took 1 milliseconds

thread-loader, and
babel-loader took 0.56 minutes
    Med   = 401 milliseconds,
    x̄     = 1.08 seconds,
    σ     = 0.57 seconds,
    range = (268 milliseconds, 2.49 seconds),
    n     = 247
file-loader took 7.11 seconds
    Med   = 1.41 seconds,
    x̄     = 1.26 seconds,
    σ     = 436 milliseconds,
    range = (340 milliseconds, 2.02 seconds),
    n     = 29
----------------------------

Getting Started

npm install --save-dev speed-measure-webpack-plugin

Change your webpack config from

{
  entry: {...},
  output: {...},
  module: {...},
  plugins: [
    new MyPlugin(),
    new MyOtherPlugin()
  ]
}

to

{
  entry: {...},
  output: {...},
  module: {...},
  plugins: SpeedMeasurePlugin.wrapPlugins({
    MyPlugin: new MyPlugin(),
    MyOtherPlugin: new MyOtherPlugin()
  })
}

Or you can also specify config:

{
  entry: {...},
  output: {...},
  module: {...},
  plugins: SpeedMeasurePlugin.wrapPlugins({
    MyPlugin: new MyPlugin(),
    MyOtherPlugin: new MyOtherPlugin()
  }, {
    outputFormat: "human",
    outputTarget: "myFile.txt"
  })
}

outputFormat

(default "json")

  • "json" - produces a JSON blob
  • "human" - produces a human readable output

outputTarget

(default null)

  • null - prints to console.log
  • "foo" - prints (and makes, if no file exists) to the file at location "foo"