feature errorsSpace, warningsSpace

declarations/WebpackOptions.d.ts

@@ -2456,6 +2456,10 @@ export interface StatsOptions {
 	 * Add errors count.
 	 */
 	errorsCount?: boolean;
+	/**
+	 * Space to display errors (value is in number of lines).
+	 */
+	errorsSpace?: number;
 	/**
 	 * Please use excludeModules instead.
 	 */
@@ -2640,6 +2644,10 @@ export interface StatsOptions {
 	 * Suppress listing warnings that match the specified filters (they will still be counted). Filters can be Strings, RegExps or Functions.
 	 */
 	warningsFilter?: WarningFilterTypes;
+	/**
+	 * Space to display warnings (value is in number of lines).
+	 */
+	warningsSpace?: number;
 }
 /**
  * Options for the watcher.

lib/stats/DefaultStatsFactoryPlugin.js

@@ -811,10 +811,9 @@ const SIMPLE_EXTRACTORS = {
 		},
 		errors: (object, compilation, context, options, factory) => {
 			const { type, cachedGetErrors } = context;
-			object.errors = factory.create(
-				`${type}.errors`,
-				cachedGetErrors(compilation),
-				context
+			object.errors = errorsSpaceLimit(
+				factory.create(`${type}.errors`, cachedGetErrors(compilation), context),
+				options.errorsSpace
 			);
 		},
 		errorsCount: (object, compilation, { cachedGetErrors }) => {
@@ -824,10 +823,13 @@ const SIMPLE_EXTRACTORS = {
 		},
 		warnings: (object, compilation, context, options, factory) => {
 			const { type, cachedGetWarnings } = context;
-			object.warnings = factory.create(
-				`${type}.warnings`,
-				cachedGetWarnings(compilation),
-				context
+			object.warnings = errorsSpaceLimit(
+				factory.create(
+					`${type}.warnings`,
+					cachedGetWarnings(compilation),
+					context
+				),
+				options.warningsSpace
 			);
 		},
 		warningsCount: (
@@ -1779,6 +1781,46 @@ const spaceLimited = (
 	};
 };
 
+const errorsSpaceLimit = (errors, max) => {
+	if (!Number.isFinite(max)) return errors;
+	// Can not fit into limit
+	// print only messages
+	if (errors.length > max)
+		return errors.map(error => {
+			if (error.details === undefined) return error;
+			const { details, ...rest } = error;
+			return { details: "", ...rest };
+		});
+
+	let fullLength = errors.length;
+	let result = errors;
+
+	let i = 0;
+	for (; i < errors.length; i++) {
+		if (errors[i].details) {
+			const splitted = errors[i].details.split("\n");
+			const len = splitted.length;
+			fullLength += len;
+			if (fullLength > max) {
+				result = errors.slice(0, i);
+				const { details, ...rest } = errors[i++];
+				result.push({
+					details: splitted.slice(0, len - (fullLength - max)).join("\n"),
+					...rest
+				});
+				for (; i < errors.length; i++) {
+					const { details, ...rest } = errors[i];
+					if (details === undefined) result.push(errors[i]);
+					result.push({ details: "", ...rest });
+				}
+				break;
+			}
+		}
+	}
+
+	return result;
+};
+
 const assetGroup = (children, assets) => {
 	let size = 0;
 	for (const asset of children) {

lib/stats/DefaultStatsPresetPlugin.js

@@ -47,6 +47,8 @@ const NAMED_PRESETS = {
 		orphanModules: true,
 		runtimeModules: true,
 		exclude: false,
+		errorsSpace: Infinity,
+		warningsSpace: Infinity,
 		modulesSpace: Infinity,
 		chunkModulesSpace: Infinity,
 		assetsSpace: Infinity,
@@ -73,6 +75,8 @@ const NAMED_PRESETS = {
 		logging: true,
 		runtimeModules: true,
 		exclude: false,
+		errorsSpace: 1000,
+		warningsSpace: 1000,
 		modulesSpace: 1000,
 		assetsSpace: 1000,
 		reasonsSpace: 1000
@@ -82,6 +86,8 @@ const NAMED_PRESETS = {
 		version: true,
 		timings: true,
 		modules: true,
+		errorsSpace: 0,
+		warningsSpace: 0,
 		modulesSpace: 0,
 		assets: true,
 		assetsSpace: 0,
@@ -95,15 +101,18 @@ const NAMED_PRESETS = {
 		all: false,
 		errors: true,
 		errorsCount: true,
+		errorsSpace: Infinity,
 		moduleTrace: true,
 		logging: "error"
 	},
 	"errors-warnings": {
 		all: false,
 		errors: true,
 		errorsCount: true,
+		errorsSpace: Infinity,
 		warnings: true,
 		warningsCount: true,
+		warningsSpace: Infinity,
 		logging: "warn"
 	},
 	summary: {

schemas/WebpackOptions.json

@@ -4615,6 +4615,10 @@
           "description": "Add errors count.",
           "type": "boolean"
         },
+        "errorsSpace": {
+          "description": "Space to display errors (value is in number of lines).",
+          "type": "number"
+        },
         "exclude": {
           "description": "Please use excludeModules instead.",
           "cli": {
@@ -4847,6 +4851,10 @@
               "$ref": "#/definitions/WarningFilterTypes"
             }
           ]
+        },
+        "warningsSpace": {
+          "description": "Space to display warnings (value is in number of lines).",
+          "type": "number"
         }
       }
     },

test/__snapshots__/Cli.basictest.js.snap

@@ -8231,6 +8231,19 @@ Object {
     "multiple": false,
     "simpleType": "boolean",
   },
+  "stats-errors-space": Object {
+    "configs": Array [
+      Object {
+        "description": "Space to display errors (value is in number of lines).",
+        "multiple": false,
+        "path": "stats.errorsSpace",
+        "type": "number",
+      },
+    ],
+    "description": "Space to display errors (value is in number of lines).",
+    "multiple": false,
+    "simpleType": "number",
+  },
   "stats-exclude-assets": Object {
     "configs": Array [
       Object {
@@ -8924,6 +8937,19 @@ Object {
     "multiple": false,
     "simpleType": "boolean",
   },
+  "stats-warnings-space": Object {
+    "configs": Array [
+      Object {
+        "description": "Space to display warnings (value is in number of lines).",
+        "multiple": false,
+        "path": "stats.warningsSpace",
+        "type": "number",
+      },
+    ],
+    "description": "Space to display warnings (value is in number of lines).",
+    "multiple": false,
+    "simpleType": "number",
+  },
   "target": Object {
     "configs": Array [
       Object {

test/__snapshots__/StatsTestCases.basictest.js.snap

@@ -987,6 +987,38 @@ chunk (runtime: a) a.js (a) 22 bytes [entry] [rendered]
 webpack x.x.x compiled successfully in X ms"
 `;
 
+exports[`StatsTestCases should print correct stats for errors-space-error 1`] = `
+"assets by status 84 bytes [cached] 1 asset
+./loader.js!./index.js 1 bytes [built] [code generated] [1 error]
+
+ERROR in ./index.js (./loader.js!./index.js)
+Module Error (from ./loader.js):
+loader error
+Error: loader error
+
+webpack x.x.x compiled with 1 error in X ms
+
+assets by status 84 bytes [cached] 1 asset
+./loader.js!./index.js 1 bytes [built] [code generated] [1 error]
+
+ERROR in ./index.js (./loader.js!./index.js)
+Module Error (from ./loader.js):
+loader error
+
+webpack x.x.x compiled with 1 error in X ms
+
+assets by status 84 bytes [cached] 1 asset
+./loader.js!./index.js 1 bytes [built] [code generated] [1 error]
+
+ERROR in ./index.js (./loader.js!./index.js)
+Module Error (from ./loader.js):
+loader error
+Error: loader error
+    at Object.<anonymous>.module.exports (Xdir/errors-space-error/loader.js:5:17)
+
+webpack x.x.x compiled with 1 error in X ms"
+`;
+
 exports[`StatsTestCases should print correct stats for exclude-with-loader 1`] = `
 "hidden assets 34 bytes 1 asset
 asset bundle.js 5.25 KiB [emitted] (name: main)
@@ -4553,6 +4585,18 @@ require.include() is deprecated and will be removed soon.
 webpack x.x.x compiled with 1 warning in X ms"
 `;
 
+exports[`StatsTestCases should print correct stats for warnings-space-warning 1`] = `
+"asset main.js 1010 bytes [emitted] (name: main)
+orphan modules 20 bytes [orphan] 1 module
+runtime modules 274 bytes 1 module
+./index.js + 1 modules 64 bytes [built] [code generated]
+
+WARNING in ./index.js 3:12-14
+export 'bb' (imported as 'bb') was not found in './a' (possible exports: a)
+
+webpack x.x.x compiled with 1 warning in X ms"
+`;
+
 exports[`StatsTestCases should print correct stats for wasm-explorer-examples-sync 1`] = `
 "assets by path *.js 22.2 KiB
   asset bundle.js 16.7 KiB [emitted] (name: main)

test/statsCases/errors-space-error/loader.js

@@ -0,0 +1,6 @@
+"use strict";
+
+module.exports = function (content) {
+	this.emitError(new Error("loader error"));
+	return content;
+}

test/statsCases/errors-space-error/webpack.config.js

@@ -0,0 +1,27 @@
+/** @type {import("../../../").Configuration[]} */
+module.exports = [
+	{
+		entry: "./loader!./index.js",
+		mode: "production",
+		stats: {
+			errorsSpace: 2,
+			errors: true
+		}
+	},
+	{
+		entry: "./loader!./index.js",
+		mode: "production",
+		stats: {
+			errorsSpace: 0,
+			errors: true
+		}
+	},
+	{
+		entry: "./loader!./index.js",
+		mode: "production",
+		stats: {
+			errorsSpace: 100,
+			errors: true
+		}
+	}
+];

test/statsCases/warnings-space-warning/a.js

@@ -0,0 +1 @@
+export const a = 1;

test/statsCases/warnings-space-warning/index.js

@@ -0,0 +1,3 @@
+import { bb } from "./a";
+
+console.log(bb);

test/statsCases/warnings-space-warning/webpack.config.js

@@ -0,0 +1,9 @@
+/** @type {import("../../../").Configuration} */
+module.exports = {
+	entry: "./index.js",
+	mode: "production",
+	stats: {
+		warningsSpace: 0,
+		warnings: true
+	}
+};

types.d.ts

@@ -11408,6 +11408,11 @@ declare interface StatsOptions {
 	 */
 	errorsCount?: boolean;
 
+	/**
+	 * Space to display errors (value is in number of lines).
+	 */
+	errorsSpace?: number;
+
 	/**
 	 * Please use excludeModules instead.
 	 */
@@ -11668,6 +11673,11 @@ declare interface StatsOptions {
 		| RegExp
 		| WarningFilterItemTypes[]
 		| ((warning: StatsError, value: string) => boolean);
+
+	/**
+	 * Space to display warnings (value is in number of lines).
+	 */
+	warningsSpace?: number;
 }
 declare abstract class StatsPrinter {
 	hooks: Readonly<{