fix: type regression

alexander-akait · alexander-akait · commit cbf8de9406d8 · 2026-02-11T13:05:13.000+03:00
diff --git a/.changeset/yellow-donkeys-fold.md b/.changeset/yellow-donkeys-fold.md
@@ -0,0 +1,5 @@
+---
+"webpack": patch
+---
+
+Fixed `WebpackPluginInstance` type regression.
diff --git a/declarations/WebpackOptions.d.ts b/declarations/WebpackOptions.d.ts
@@ -1896,7 +1896,7 @@ export interface WebpackPluginInstance {
 	/**
 	 * The run point of the plugin, required method.
 	 */
-	apply: import("../lib/webpack").WebpackPluginInstance;
+	apply: import("../lib/webpack").WebpackPluginInstanceApplyFunction;
 	[k: string]: any;
 }
 /**
diff --git a/lib/index.js b/lib/index.js
@@ -33,8 +33,8 @@ const memoize = require("./util/memoize");
 /** @typedef {import("../declarations/WebpackOptions").StatsOptions} StatsOptions */
 /** @typedef {import("../declarations/WebpackOptions").WebpackOptions} Configuration */
 /** @typedef {import("../declarations/WebpackOptions").WebpackOptionsNormalized} WebpackOptionsNormalized */
-/** @typedef {import("./webpack").WebpackPluginFunction} WebpackPluginFunction */
-/** @typedef {import("./webpack").WebpackPluginInstance} WebpackPluginInstance */
+/** @typedef {import("../declarations/WebpackOptions").WebpackPluginFunction} WebpackPluginFunction */
+/** @typedef {import("../declarations/WebpackOptions").WebpackPluginInstance} WebpackPluginInstance */
 /** @typedef {import("./ChunkGroup")} ChunkGroup */
 /** @typedef {import("./Compiler").AssetEmittedInfo} AssetEmittedInfo */
 /** @typedef {import("./Compilation").Asset} Asset */
diff --git a/lib/webpack.js b/lib/webpack.js
@@ -32,7 +32,7 @@ const memoize = require("./util/memoize");
 /** @typedef {import("./Stats")} Stats */
 
 /** @typedef {(this: Compiler, compiler: Compiler) => void} WebpackPluginFunction */
-/** @typedef {(compiler: Compiler) => void} WebpackPluginInstance */
+/** @typedef {(compiler: Compiler) => void} WebpackPluginInstanceApplyFunction */
 
 const getValidateSchema = memoize(() => require("./validateSchema"));
 
diff --git a/schemas/WebpackOptions.json b/schemas/WebpackOptions.json
@@ -6049,7 +6049,7 @@
         "apply": {
           "description": "The run point of the plugin, required method.",
           "instanceof": "Function",
-          "tsType": "import('../lib/webpack').WebpackPluginInstance"
+          "tsType": "import('../lib/webpack').WebpackPluginInstanceApplyFunction"
         }
       },
       "required": ["apply"]
diff --git a/types.d.ts b/types.d.ts
@@ -12432,8 +12432,8 @@ declare interface Optimization {
 		| ""
 		| 0
 		| ((this: Compiler, compiler: Compiler) => void)
-		| "..."
 		| WebpackPluginInstance
+		| "..."
 	)[];
 
 	/**
@@ -12576,8 +12576,8 @@ declare interface OptimizationNormalized {
 	 */
 	minimizer?: (
 		| ((this: Compiler, compiler: Compiler) => void)
-		| "..."
 		| WebpackPluginInstance
+		| "..."
 	)[];
 
 	/**
@@ -12696,8 +12696,8 @@ type OptimizationNormalizedWithDefaults = OptimizationNormalized & {
 	minimize: NonNullable<undefined | boolean>;
 	minimizer: (
 		| ((this: Compiler, compiler: Compiler) => void)
-		| "..."
 		| WebpackPluginInstance
+		| "..."
 	)[];
 	nodeEnv: NonNullable<undefined | string | false>;
 };
@@ -19890,7 +19890,6 @@ declare namespace exports {
 		this: Compiler,
 		compiler: Compiler
 	) => void;
-	export type WebpackPluginInstance = (compiler: Compiler) => void;
 	export type ExternalItemFunctionCallback = (
 		data: ExternalItemFunctionData,
 		callback: (
@@ -20013,6 +20012,7 @@ declare namespace exports {
 		StatsOptions,
 		Configuration,
 		WebpackOptionsNormalized,
+		WebpackPluginInstance,
 		ChunkGroup,
 		AssetEmittedInfo,
 		Asset,

-Original file line number
+Diff line change
@@ @@ -0,0 +1,5 @@ @@
 +---
 +"webpack": patch
 +---
++
 +Fixed `WebpackPluginInstance` type regression.
Original file line number	Diff line number	Diff line change
`@@ -1896,7 +1896,7 @@ export interface WebpackPluginInstance {`
`1896`	`1896`	`/**`
`1897`	`1897`	`* The run point of the plugin, required method.`
`1898`	`1898`	`*/`
`1899`		`- apply: import("../lib/webpack").WebpackPluginInstance;`
	`1899`	`+ apply: import("../lib/webpack").WebpackPluginInstanceApplyFunction;`
`1900`	`1900`	`[k: string]: any;`
`1901`	`1901`	`}`
`1902`	`1902`	`/**`
Original file line number	Diff line number	Diff line change
`@@ -6049,7 +6049,7 @@`
`6049`	`6049`	`"apply": {`
`6050`	`6050`	`"description": "The run point of the plugin, required method.",`
`6051`	`6051`	`"instanceof": "Function",`
`6052`		`- "tsType": "import('../lib/webpack').WebpackPluginInstance"`
	`6052`	`+ "tsType": "import('../lib/webpack').WebpackPluginInstanceApplyFunction"`
`6053`	`6053`	`}`
`6054`	`6054`	`},`
`6055`	`6055`	`"required": ["apply"]`