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Stats
Generate packaging information that can be used to analyze module dependencies and optimize compilation speed.
- Using
@rspack/cli,rspack build --json stats.json. - Using rspack's Node.js API,
stats.toJson(options)、stats.toString(options).
- Type:
boolean | string | Object - Default:
false
Stats Presets
| Preset | Desciption |
|---|---|
'normal' (true) |
Output by default value of stats options |
'none' (false) |
Output nothing |
'verbose' |
Output everything |
'errors-only' |
Output only error-related information |
'errors-warnings' |
Output only error and warning related information |
Stats Options
You can specify exactly which packing information to output, all the following fields are optional.
stats.assets
- Type:
boolean - Default:
true
Tells stats whether to show the asset information.
stats.chunks
- Type:
boolean - Default:
true
Tells stats whether to show the chunk information.
stats.modules
- Type:
boolean - Default:
true
Tells stats whether to show the module information.
stats.entrypoints
- Type:
boolean - Default:
true
Tells stats whether to show the entrypoints information.
stats.reasons
- Type:
boolean - Default:
true
Tells stats to add information about the reasons of why modules are included.
stats.hash
- Type:
boolean - Default:
true
Tells stats whether to add information about the hash of the compilation.
stats.errors
- Type:
boolean - Default:
true
Tells stats whether to display the errors.
stats.errorsCount
- Type:
boolean - Default:
true
Add errors count.
stats.warnings
- Type:
boolean - Default:
true
Tells stats to add warnings.
stats.warningsCount
- Type:
boolean - Default:
true
Add warnings count.
stats.all
- Type:
boolean - Default:
undefined
Controlling whether all stats options are output.
stats.preset
- Type:
boolean - Default:
undefined
Output according to preset values.
Extending stats behaviours
If you want to use the preset output behavior but want to output more or less of individual fields, you can customize the output behavior of the fields after specifying preset or all.
For example, only the error and the reason why the module was introduced are output.
module.exports = {
// ...
stats: {
preset: 'errors-only',
reasons: true,
},
};