Document webpack change: Preset option for errors & warnings only

[webpack-bot]

A pull request by @vincentrodriguez was merged and maintainers requested a documentation change.

See pull request: webpack/webpack#8919

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I've noticed that I often need just see warnings and errors since during rapid development I don't really need to see the modules stats. So I tend to write the same code every time and it would be nice to be able to just provide an "errors-warnings" preset to save space and improve readability.

What kind of change does this PR introduce?

Extension to the existing stats preset.

Did you add tests for your changes?

Tests added.

Does this PR introduce a breaking change?

No, this is a just an extension which will not break anything

What needs to be documented once your changes are merged?

The following page will need to be updated with additional stats preset option: https://webpack.js.org/configuration/stats/

[ishpartko]

Hi all,

got error

WebpackOptionsValidationError: Invalid configuration object. Webpack has been initialised using a configuration object that does not match the API schema.
 - configuration.stats should be one of these:
   object { all?, assets?, assetsSort?, builtAt?, cached?, cachedAssets?, children?, chunkGroups?, chunkModules?, chunkOrigins?, chunks?, chunksSort?, colors?, context?, depth?, entrypoints?, env?, errorDetails?, errors?, exclude?, excludeAssets?, excludeModules?, hash?, maxModules?, moduleAssets?, moduleTrace?, modules?, modulesSort?, nestedModules?, optimizationBailout?, outputPath?, performance?, providedExports?, publicPath?, reasons?, source?, timings?, usedExports?, version?, warnings?, warningsFilter? } | boolean | "none" | "errors-only" | "minimal" | "normal" | "detailed" | "verbose"
   -> Used by the webpack CLI program to pass stats options.
   Details:
    * configuration.stats should be an object.
    * configuration.stats should be a boolean.
    * configuration.stats should be one of these:
      "none" | "errors-only" | "minimal" | "normal" | "detailed" | "verbose"
    at webpack 

when pass stats: "errors-warnings" in my config

"webpack": "^4.32.2",