Stats

object string

The stats option lets you precisely control what bundle information gets displayed. This can be a nice middle ground if you don't want to use quiet or noInfo because you want some bundle information, but not all of it.

module.exports = {
  //...
  stats: 'errors-only',
};

Stats Presets

Webpack comes with certain presets available for the stats output:

Stats Options

It is possible to specify which information you want to see in the stats output.

stats.all

A fallback value for stats options when an option is not defined. It has precedence over local webpack defaults.

module.exports = {
  //...
  stats: {
    all: undefined,
  },
};

stats.assets

boolean = true

Tells stats whether to show the asset information. Set stats.assets to false to hide it.

module.exports = {
  //...
  stats: {
    assets: false,
  },
};

stats.assetsSort

string = 'id'

Tells stats to sort the assets by a given field. All of the sorting fields are allowed to be used as values for stats.assetsSort. Use ! prefix in the value to reverse the sort order by a given field.

module.exports = {
  //...
  stats: {
    assetsSort: '!size',
  },
};

stats.assetsSpace

number = 15

Tells stats how many items of assets should be displayed (groups will be collapsed to fit this space).

module.exports = {
  //...
  stats: {
    assetsSpace: 15,
  },
};

stats.builtAt

boolean = true

Tells stats whether to add the build date and the build time information. Set stats.builtAt to false to hide it.

module.exports = {
  //...
  stats: {
    builtAt: false,
  },
};

stats.cached

Old version of stats.cachedModules.

stats.cachedAssets

boolean = true

Tells stats whether to add information about the cached assets. Setting stats.cachedAssets to false will tell stats to only show the emitted files (not the ones that were built).

module.exports = {
  //...
  stats: {
    cachedAssets: false,
  },
};

stats.cachedModules

boolean = true

Tells stats whether to add information about cached (not built) modules.

module.exports = {
  //...
  stats: {
    cachedModules: false,
  },
};

stats.children

boolean = true

Tells stats whether to add information about the children.

module.exports = {
  //...
  stats: {
    children: false,
  },
};

stats.chunkGroupAuxiliary

boolean = true

Display auxiliary assets in chunk groups.

module.exports = {
  //...
  stats: {
    chunkGroupAuxiliary: false,
  },
};

stats.chunkGroupChildren

boolean = true

Display children of the chunk groups (e.g. prefetched, preloaded chunks and assets).

module.exports = {
  //...
  stats: {
    chunkGroupChildren: false,
  },
};

stats.chunkGroupMaxAssets

number

Limit of assets displayed in chunk groups.

module.exports = {
  //...
  stats: {
    chunkGroupMaxAssets: 5,
  },
};

stats.chunkGroups

boolean = true

Tells stats whether to add information about the namedChunkGroups.

module.exports = {
  //...
  stats: {
    chunkGroups: false,
  },
};

stats.chunkModules

boolean = true

Tells stats whether to add information about the built modules to information about the chunk.

module.exports = {
  //...
  stats: {
    chunkModules: false,
  },
};

stats.chunkModulesSpace

number = 10

Tells stats how many items of chunk modules should be displayed (groups will be collapsed to fit this space).

module.exports = {
  //...
  stats: {
    chunkModulesSpace: 15,
  },
};

stats.chunkOrigins

boolean = true

Tells stats whether to add information about the origins of chunks and chunk merging.

module.exports = {
  //...
  stats: {
    chunkOrigins: false,
  },
};

stats.chunkRelations

boolean = false

Tells stats to display chunk parents, children and siblings.

module.exports = {
  //...
  stats: {
    chunkRelations: false,
  },
};

stats.chunks

boolean = true

Tells stats whether to add information about the chunk. Setting stats.chunks to false results in a less verbose output.

module.exports = {
  //...
  stats: {
    chunks: false,
  },
};

stats.chunksSort

string = 'id'

Tells stats to sort the chunks by a given field. All of the sorting fields are allowed to be used as values for stats.chunksSort. Use ! prefix in the value to reverse the sort order by a given field.

module.exports = {
  //...
  stats: {
    chunksSort: 'name',
  },
};

stats.colors

boolean = false { bold?: string, cyan?: string, green?: string, magenta?: string, red?: string, yellow?: string }

Tells stats whether to output in the different colors.

module.exports = {
  //...
  stats: {
    colors: true,
  },
};

It is also available as a CLI flag:

npx webpack --stats-colors

To disable:

npx webpack --no-stats-colors

You can specify your own terminal output colors using ANSI escape sequences

module.exports = {
  //...
  colors: {
    green: '\u001b[32m',
  },
};

stats.context

string

The stats base directory, an absolute path for shortening the request information.

const path = require('path');

module.exports = {
  //...
  stats: {
    context: path.resolve(__dirname, 'src/components'),
  },
};

By default, the value of context or the Node.js current working directory is used.

stats.dependentModules

boolean

Tells stats whether to show chunk modules that are dependencies of other modules of the chunk.

module.exports = {
  //...
  stats: {
    dependentModules: false,
  },
};

stats.depth

boolean = false

Tells stats whether to display the distance from the entry point for each module.

module.exports = {
  //...
  stats: {
    depth: true,
  },
};

stats.entrypoints

boolean = true string = 'auto'

Tells stats whether to display the entry points with the corresponding bundles.

module.exports = {
  //...
  stats: {
    entrypoints: false,
  },
};

When stats.entrypoints is set to 'auto', webpack will decide automatically whether to display the entry points in the stats output.

stats.env

boolean = false

Tells stats whether to display the --env information.

module.exports = {
  //...
  stats: {
    env: true,
  },
};

stats.errorDetails

boolean string = "auto"

Tells stats whether to add the details to the errors. It defaults to 'auto' which will show error details when there're only 2 or less errors.

module.exports = {
  //...
  stats: {
    errorDetails: false,
  },
};

stats.errorStack

boolean = true

Tells stats whether to show stack trace of errors.

module.exports = {
  //...
  stats: {
    errorStack: false,
  },
};

stats.errors

boolean = true

Tells stats whether to display the errors.

module.exports = {
  //...
  stats: {
    errors: false,
  },
};

stats.errorsCount

boolean = true

Add errors count.

module.exports = {
  //...
  stats: {
    errorsCount: false,
  },
};

stats.errorsSpace

number

Tells stats to limit the number of lines to allocate for displaying an error.

module.exports = {
  //...
  stats: {
    errorsSpace: 5,
  },
};

stats.exclude

See stats.excludeModules.

stats.excludeAssets

array = []: string | RegExp | function (assetName) => boolean string RegExp function (assetName) => boolean

Tells stats to exclude the matching assets information. This can be done with a string, a RegExp, a function that is getting the assets name as an argument and returns a boolean. stats.excludeAssets can be an array of any of the above.

module.exports = {
  //...
  stats: {
    excludeAssets: [
      'filter',
      /filter/,
      (assetName) => assetName.contains('moduleA'),
    ],
  },
};

stats.excludeModules

array = []: string | RegExp | function (assetName) => boolean string RegExp function (assetName) => boolean boolean: false

Tells stats to exclude the matching modules information. This can be done with a string, a RegExp, a function that is getting the module's source as an argument and returns a boolean. stats.excludeModules can be an array of any of the above. stats.excludeModules's configuration is merged with the stats.exclude's configuration value.

module.exports = {
  //...
  stats: {
    excludeModules: ['filter', /filter/, (moduleSource) => true],
  },
};

Setting stats.excludeModules to false will disable the exclude behaviour.

module.exports = {
  //...
  stats: {
    excludeModules: false,
  },
};

stats.groupAssetsByChunk

boolean

Tells stats whether to group assets by how their are related to chunks.

module.exports = {
  //...
  stats: {
    groupAssetsByChunk: false,
  },
};

stats.groupAssetsByEmitStatus

boolean

Tells stats whether to group assets by their status (emitted, compared for emit or cached).

module.exports = {
  //...
  stats: {
    groupAssetsByEmitStatus: false,
  },
};

stats.groupAssetsByExtension

boolean

Tells stats whether to group assets by their extension.

module.exports = {
  //...
  stats: {
    groupAssetsByExtension: false,
  },
};

stats.groupAssetsByInfo

boolean

Tells stats whether to group assets by their asset info (immutable, development, hotModuleReplacement, etc).

module.exports = {
  //...
  stats: {
    groupAssetsByInfo: false,
  },
};

stats.groupAssetsByPath

boolean

Tells stats whether to group assets by their asset path.

module.exports = {
  //...
  stats: {
    groupAssetsByPath: false,
  },
};

stats.groupModulesByAttributes

boolean

Tells stats whether to group modules by their attributes (errors, warnings, assets, optional, orphan, or dependent).

module.exports = {
  //...
  stats: {
    groupModulesByAttributes: false,
  },
};

stats.groupModulesByCacheStatus

boolean

Tells stats whether to group modules by their cache status (cached or built and cacheable).

module.exports = {
  //...
  stats: {
    groupModulesByCacheStatus: true,
  },
};

stats.groupModulesByExtension

boolean

Tells stats whether to group modules by their extension.

module.exports = {
  //...
  stats: {
    groupModulesByExtension: true,
  },
};

stats.groupModulesByLayer

boolean

Tells stats whether to group modules by their layer.

module.exports = {
  //...
  stats: {
    groupModulesByLayer: true,
  },
};

stats.groupModulesByPath

boolean

Tells stats whether to group modules by their path.

module.exports = {
  //...
  stats: {
    groupModulesByPath: true,
  },
};

stats.groupModulesByType

boolean

Tells stats whether to group modules by their type.

module.exports = {
  //...
  stats: {
    groupModulesByType: true,
  },
};

stats.groupReasonsByOrigin

boolean

Group reasons by their origin module to avoid large set of reasons.

module.exports = {
  //...
  stats: {
    groupReasonsByOrigin: true,
  },
};

stats.hash

boolean = true

Tells stats whether to add information about the hash of the compilation.

module.exports = {
  //...
  stats: {
    hash: false,
  },
};

stats.ids

boolean = false

Tells stats to add IDs of modules and chunks.

module.exports = {
  //...
  stats: {
    ids: true,
  },
};

stats.logging

string = 'info': 'none' | 'error' | 'warn' | 'info' | 'log' | 'verbose' boolean

Tells stats whether to add logging output.

• 'none', false - disable logging
• 'error' - errors only
• 'warn' - errors and warnings only
• 'info' - errors, warnings, and info messages
• 'log', true - errors, warnings, info messages, log messages, groups, clears. Collapsed groups are displayed in a collapsed state.
• 'verbose' - log everything except debug and trace. Collapsed groups are displayed in expanded state.

module.exports = {
  //...
  stats: {
    logging: 'verbose',
  },
};

stats.loggingDebug

array = []: string | RegExp | function (name) => boolean string RegExp function (name) => boolean

Tells stats to include the debug information of the specified loggers such as Plugins or Loaders. When stats.logging is set to false, stats.loggingDebug option is ignored.

module.exports = {
  //...
  stats: {
    loggingDebug: [
      'MyPlugin',
      /MyPlugin/,
      /webpack/, // To get core logging
      (name) => name.contains('MyPlugin'),
    ],
  },
};

stats.loggingTrace

boolean = true

Enable stack traces in the logging output for errors, warnings and traces. Set stats.loggingTrace to hide the trace.

module.exports = {
  //...
  stats: {
    loggingTrace: false,
  },
};

stats.moduleAssets

boolean = true

Tells stats whether to add information about assets inside modules. Set stats.moduleAssets to false to hide it.

module.exports = {
  //...
  stats: {
    moduleAssets: false,
  },
};

stats.moduleTrace

boolean = true

Tells stats to show dependencies and the origin of warnings/errors. stats.moduleTrace is available since webpack 2.5.0.

module.exports = {
  //...
  stats: {
    moduleTrace: false,
  },
};

stats.modules

boolean = true

Tells stats whether to add information about the built modules.

module.exports = {
  //...
  stats: {
    modules: false,
  },
};

stats.modulesSort

string = 'id'

Tells stats to sort the modules by a given field. All of the sorting fields are allowed to be used as values for stats.modulesSort. Use ! prefix in the value to reverse the sort order by a given field.

module.exports = {
  //...
  stats: {
    modulesSort: 'size',
  },
};

stats.modulesSpace

number = 15

Tells stats how many items of modules should be displayed (groups will be collapsed to fit this space).

module.exports = {
  //...
  stats: {
    modulesSpace: 15,
  },
};

stats.nestedModules

boolean

Tells stats whether to add information about modules nested in other modules (like with module concatenation).

module.exports = {
  //...
  stats: {
    nestedModules: true,
  },
};

stats.nestedModulesSpace

number = 10

Tells stats how many items of nested modules should be displayed (groups will be collapsed to fit this space).

module.exports = {
  //...
  stats: {
    nestedModulesSpace: 15,
  },
};

stats.optimizationBailout

boolean

Tells stats to show the reasons why optimization bailed out for modules.

module.exports = {
  //...
  stats: {
    optimizationBailout: false,
  },
};

stats.orphanModules

boolean = false

Tells stats whether to hide orphan modules. A module is an orphan if it is not included in any chunk. Orphan modules are hidden by default in stats.

module.exports = {
  //...
  stats: {
    orphanModules: true,
  },
};

stats.outputPath

boolean = true

Tells stats to show the outputPath.

module.exports = {
  //...
  stats: {
    outputPath: false,
  },
};

stats.performance

boolean = true

Tells stats to show performance hint when the file size exceeds performance.maxAssetSize.

module.exports = {
  //...
  stats: {
    performance: false,
  },
};

stats.preset

string boolean: false

Sets the preset for the type of information that gets displayed. It is useful for extending stats behaviours.

module.exports = {
  //...
  stats: {
    preset: 'minimal',
  },
};

Setting value of stats.preset to false tells webpack to use 'none' stats preset.

stats.providedExports

boolean = false

Tells stats to show the exports of the modules.

module.exports = {
  //...
  stats: {
    providedExports: true,
  },
};

stats.publicPath

boolean = true

Tells stats to show the publicPath.

module.exports = {
  //...
  stats: {
    publicPath: false,
  },
};

stats.reasons

boolean = true

Tells stats to add information about the reasons of why modules are included.

module.exports = {
  //...
  stats: {
    reasons: false,
  },
};

stats.reasonsSpace

number

Space to display reasons (groups will be collapsed to fit this space).

module.exports = {
  //...
  stats: {
    reasonsSpace: 1000,
  },
};

stats.relatedAssets

boolean = false

Tells stats whether to add information about assets that are related to other assets (like SourceMaps for assets).

module.exports = {
  //...
  stats: {
    relatedAssets: true,
  },
};

stats.runtimeModules

boolean = true

Tells stats whether to add information about runtime modules.

module.exports = {
  //...
  stats: {
    runtimeModules: false,
  },
};

stats.source

boolean = false

Tells stats to add the source code of modules.

module.exports = {
  //...
  stats: {
    source: true,
  },
};

stats.timings

boolean = true

Tells stats to add the timing information.

module.exports = {
  //...
  stats: {
    timings: false,
  },
};

stats.usedExports

boolean = false

Tells stats whether to show which exports of a module are used.

module.exports = {
  //...
  stats: {
    usedExports: true,
  },
};

stats.version

boolean = true

Tells stats to add information about the webpack version used.

module.exports = {
  //...
  stats: {
    version: false,
  },
};

stats.warnings

boolean = true

Tells stats to add warnings.

module.exports = {
  //...
  stats: {
    warnings: false,
  },
};

stats.warningsCount

boolean = true

Add warnings count.

module.exports = {
  //...
  stats: {
    warningsCount: false,
  },
};

stats.warningsFilter

array = []: string | RegExp | function (warning) => boolean string RegExp function (warning) => boolean

Tells stats to exclude the warnings that are matching given filters. This can be done with a string, a RegExp, a function that is getting a warning as an argument and returns a boolean. stats.warningsFilter can be an array of any of the above.

module.exports = {
  //...
  stats: {
    warningsFilter: ['filter', /filter/, (warning) => true],
  },
};

stats.warningsSpace

number

Tells stats to limit the number of lines to allocate for displaying a warning.

module.exports = {
  //...
  stats: {
    warningsSpace: 5,
  },
};

Sorting fields

For assetsSort, chunksSort, and modulesSort there are several possible fields that you can sort items by:

• 'id' - the item's id,
• 'name' - the item's name that was assigned to it upon importing,
• 'size' - the size of item in bytes,
• 'chunks' - what chunks the item originates from (for example, if there are multiple subchunks for one chunk: the subchunks will be grouped according to their main chunk),
• 'errors' - number of errors in items,
• 'warnings' - number of warnings in items,
• 'failed' - whether the item has failed compilation,
• 'cacheable' - whether the item is cacheable,
• 'built' - whether the asset has been built,
• 'prefetched' - whether the asset will be prefetched,
• 'optional' - whether the asset is optional.
• 'identifier' - identifier of the item.
• 'index' - item's processing index.
• 'index2'
• 'profile'
• 'issuer' - an identifier of the issuer.
• 'issuerId' - an id of the issuer.
• 'issuerName' - a name of the issuer.
• 'issuerPath' - a full issuer object. There's no real need to sort by this field.

Extending stats behaviours

If you want to use one of the presets e.g. 'minimal' but still override some of the rules: specify the desired stats.preset and add the customized or additional rules afterwards.

webpack.config.js

module.exports = {
  //..
  stats: {
    preset: 'minimal',
    moduleTrace: true,
    errorDetails: true,
  },
};