Utility Functions

/**
 * Create hash function for webpack
 * @param algorithm - Hash algorithm to use (e.g., 'md4', 'md5', 'sha1', 'sha256')
 * @returns Hash instance for incremental hashing
 */
function createHash(algorithm: string): Hash;

/**
 * Create batch hash for multiple inputs
 * @param algorithm - Hash algorithm to use
 * @returns BatchedHash instance for batched operations
 */
function createBatchedHash(algorithm: string): BatchedHash;

interface Hash {
  /**
   * Update hash with new data
   * @param data - Data to hash
   * @param encoding - Input encoding (default: 'utf8')
   * @returns Hash instance for chaining
   */
  update(data: string | Buffer, encoding?: string): Hash;
  
  /**
   * Generate final hash digest
   * @param encoding - Output encoding (default: 'hex')
   * @returns Hash digest string
   */
  digest(encoding?: string): string;
}

interface BatchedHash extends Hash {
  /**
   * Add hash to batch
   * @param hash - Hash to add to batch
   */
  add(hash: Hash): void;
  
  /**
   * Flush batched hashes
   * @returns Combined hash digest
   */
  flush(): string;
}

const { createHash } = require("webpack/lib/util/createHash");

// Create content hash for caching
const hash = createHash("md4");
hash.update(moduleSource);
const contentHash = hash.digest("hex").substr(0, 8);

// Batch multiple hashes
const batchedHash = createBatchedHash("md4");
modules.forEach(module => {
  const moduleHash = createHash("md4");
  moduleHash.update(module.source());
  batchedHash.add(moduleHash);
});
const combinedHash = batchedHash.flush();

/**
 * Collection of comparison functions for webpack objects
 */
interface Comparators {
  /**
   * Compare modules by identifier
   * @param a - First module
   * @param b - Second module
   * @returns Comparison result (-1, 0, 1)
   */
  compareModulesByIdentifier(a: Module, b: Module): number;
  
  /**
   * Compare modules by pre-order index
   * @param moduleGraph - Module graph instance
   * @returns Comparison function
   */
  compareModulesByPreOrderIndexOrIdentifier(moduleGraph: ModuleGraph): (a: Module, b: Module) => number;
  
  /**
   * Compare chunks by identifier
   * @param a - First chunk
   * @param b - Second chunk
   * @returns Comparison result (-1, 0, 1)
   */
  compareChunksByIdentifier(a: Chunk, b: Chunk): number;
  
  /**
   * Compare chunk groups by identifier
   * @param a - First chunk group
   * @param b - Second chunk group
   * @returns Comparison result (-1, 0, 1)
   */
  compareChunkGroupsByIdentifier(a: ChunkGroup, b: ChunkGroup): number;
  
  /**
   * Compare strings naturally
   * @param a - First string
   * @param b - Second string
   * @returns Comparison result (-1, 0, 1)
   */
  compareStringsNumeric(a: string, b: string): number;
  
  /**
   * Compare modules by post-order index
   * @param moduleGraph - Module graph instance
   * @returns Comparison function
   */
  compareModulesByPostOrderIndexOrIdentifier(moduleGraph: ModuleGraph): (a: Module, b: Module) => number;
  
  /**
   * Compare locations in source files
   * @param a - First location
   * @param b - Second location
   * @returns Comparison result (-1, 0, 1)
   */
  compareLocations(a: SourceLocation, b: SourceLocation): number;
}

const comparators: Comparators;

const { comparators } = require("webpack/lib/util/comparators");

// Sort modules by identifier
const sortedModules = modules.sort(comparators.compareModulesByIdentifier);

// Sort chunks by identifier
const sortedChunks = chunks.sort(comparators.compareChunksByIdentifier);

// Natural string comparison
const files = ["file1.js", "file10.js", "file2.js"];
files.sort(comparators.compareStringsNumeric);
// Result: ["file1.js", "file2.js", "file10.js"]

/**
 * Runtime utility functions for webpack
 */
interface RuntimeUtils {
  /**
   * Generate runtime code for module access
   * @param moduleId - Module identifier
   * @param optional - Whether module is optional
   * @returns Runtime code string
   */
  moduleAccessor(moduleId: string | number, optional?: boolean): string;
  
  /**
   * Generate runtime code for chunk loading
   * @param chunkId - Chunk identifier
   * @param runtimeRequirements - Required runtime features
   * @returns Runtime code string
   */
  chunkLoader(chunkId: string | number, runtimeRequirements: Set<string>): string;
  
  /**
   * Generate module namespace object
   * @param module - Module instance
   * @param exports - Module exports
   * @returns Namespace object code
   */
  createNamespaceObject(module: Module, exports: any): string;
  
  /**
   * Generate compatibility helper for ES modules
   * @param exports - Exports object
   * @returns Compatibility code
   */
  makeCompatibilityHelper(exports: any): string;
  
  /**
   * Get runtime chunk name
   * @param entrypoint - Entry point instance
   * @returns Runtime chunk name
   */
  getRuntimeChunkName(entrypoint: Entrypoint): string;
}

const runtime: RuntimeUtils;

const { runtime } = require("webpack/lib/util/runtime");

// Generate module accessor code
const moduleCode = runtime.moduleAccessor("./my-module", false);

// Generate chunk loader code
const chunkCode = runtime.chunkLoader("async-chunk", new Set(["__webpack_require__"]));

// Create namespace object
const namespaceCode = runtime.createNamespaceObject(module, moduleExports);

/**
 * Serialization system for webpack data persistence
 */
interface SerializationUtils {
  /**
   * Register serializable type
   * @param Constructor - Constructor function
   * @param name - Serialization name
   * @param serializer - Custom serializer function
   */
  register(
    Constructor: Function,
    name: string,
    serializer?: {
      serialize: (obj: any, context: SerializationContext) => any;
      deserialize: (data: any, context: SerializationContext) => any;
    }
  ): void;
  
  /**
   * Create object serializer
   * @param obj - Object to serialize
   * @param context - Serialization context
   * @returns Serialized data
   */
  createObjectSerializer(obj: any, context: SerializationContext): any;
  
  /**
   * Create object deserializer
   * @param data - Serialized data
   * @param context - Serialization context
   * @returns Deserialized object
   */
  createObjectDeserializer(data: any, context: SerializationContext): any;
  
  /**
   * Serialize value to buffer
   * @param value - Value to serialize
   * @returns Buffer containing serialized data
   */
  serialize(value: any): Buffer;
  
  /**
   * Deserialize value from buffer
   * @param buffer - Buffer containing serialized data
   * @returns Deserialized value
   */
  deserialize(buffer: Buffer): any;
}

interface SerializationContext {
  /** Write method for serialization */
  write: (value: any) => void;
  /** Read method for deserialization */
  read: () => any;
  /** Serialization options */
  options?: SerializationOptions;
}

interface SerializationOptions {
  /** Freeze serialized objects */
  freeze?: boolean;
  /** Include source maps */
  sourceMaps?: boolean;
  /** Compression level */
  compression?: number;
}

const serialization: SerializationUtils;

const { serialization } = require("webpack/lib/util/serialization");

// Register custom class for serialization
class CustomData {
  constructor(value) {
    this.value = value;
  }
}

serialization.register(CustomData, "CustomData", {
  serialize: (obj, { write }) => {
    write(obj.value);
  },
  deserialize: ({ read }) => {
    return new CustomData(read());
  }
});

// Serialize and deserialize data
const data = { modules: [], chunks: [], customData: new CustomData("test") };
const buffer = serialization.serialize(data);
const restored = serialization.deserialize(buffer);

/**
 * Intelligent object merging with performance optimizations
 * @param first - First object to merge
 * @param second - Second object to merge
 * @returns Merged object with cached results
 */
function cleverMerge<T, U>(first: T, second: U): T & U;

/**
 * Cached merge function for repeated operations
 * @param first - First object to merge
 * @param second - Second object to merge
 * @returns Merged object from cache or new merge
 */
function cachedCleverMerge<T, U>(first: T, second: U): T & U;

/**
 * Clear merge cache
 */
function clearCache(): void;

/**
 * Configure merge behavior
 * @param options - Merge options
 */
function setMergeOptions(options: MergeOptions): void;

interface MergeOptions {
  /** Maximum cache size */
  maxCacheSize?: number;
  /** Deep merge arrays */
  mergeArrays?: boolean;
  /** Custom merge functions */
  customMergers?: Record<string, (a: any, b: any) => any>;
}

const { cleverMerge, cachedCleverMerge } = require("webpack/lib/util/cleverMerge");

// Merge webpack configurations
const baseConfig = {
  entry: "./src/index.js",
  output: { path: "/dist" },
  plugins: [new PluginA()]
};

const envConfig = {
  mode: "production",
  output: { filename: "[hash].js" },
  plugins: [new PluginB()]
};

const finalConfig = cleverMerge(baseConfig, envConfig);
// Result: merged configuration with intelligent handling

// Cached merge for repeated operations
const optimizedMerge = cachedCleverMerge(baseConfig, envConfig);

class LazySet<T> {
  /**
   * Constructor for LazySet
   * @param iterable - Initial items (optional)
   */
  constructor(iterable?: Iterable<T>);
  
  /**
   * Add item to set
   * @param item - Item to add
   * @returns LazySet instance for chaining
   */
  add(item: T): LazySet<T>;
  
  /**
   * Check if set contains item
   * @param item - Item to check
   * @returns True if item exists in set
   */
  has(item: T): boolean;
  
  /**
   * Remove item from set
   * @param item - Item to remove
   * @returns True if item was removed
   */
  delete(item: T): boolean;
  
  /**
   * Clear all items from set
   */
  clear(): void;
  
  /**
   * Get set size
   * @returns Number of items in set
   */
  get size(): number;
  
  /**
   * Iterate over set values
   * @returns Iterator for set values
   */
  values(): IterableIterator<T>;
  
  /**
   * Iterate over set entries
   * @returns Iterator for [value, value] pairs
   */
  entries(): IterableIterator<[T, T]>;
  
  /**
   * Execute callback for each item
   * @param callback - Function to execute for each item
   * @param thisArg - Value to use as 'this'
   */
  forEach(callback: (value: T, value2: T, set: LazySet<T>) => void, thisArg?: any): void;
  
  /**
   * Convert to regular Set
   * @returns Set instance with all items
   */
  toSet(): Set<T>;
  
  /**
   * Serialize set for caching
   * @returns Serialized representation
   */
  serialize(): any;
  
  /**
   * Deserialize set from cache
   * @param data - Serialized data
   * @returns LazySet instance
   */
  static deserialize<T>(data: any): LazySet<T>;
}

const { LazySet } = require("webpack/lib/util/LazySet");

// Create lazy set for modules
const moduleSet = new LazySet();

// Add modules as they're discovered
compilation.hooks.buildModule.tap("MyPlugin", (module) => {
  moduleSet.add(module);
});

// Efficient membership testing
if (moduleSet.has(targetModule)) {
  console.log("Module is in the set");
}

// Convert to regular set when needed
const regularSet = moduleSet.toSet();

/**
 * Compile boolean matcher expression
 * @param str - Boolean expression string
 * @returns Compiled matcher function
 */
function compileBooleanMatcher(str: string): BooleanMatcher;

/**
 * Compiled boolean matcher function
 * @param input - Input string to test
 * @returns True if input matches expression
 */
type BooleanMatcher = (input: string) => boolean;

/**
 * Parse boolean expression into AST
 * @param str - Expression string
 * @returns Parsed AST
 */
function parseBooleanExpression(str: string): BooleanExpressionNode;

/**
 * Optimize boolean expression for performance
 * @param expression - Boolean expression AST
 * @returns Optimized expression
 */
function optimizeBooleanExpression(expression: BooleanExpressionNode): BooleanExpressionNode;

interface BooleanExpressionNode {
  type: "literal" | "and" | "or" | "not" | "identifier";
  value?: string | boolean;
  left?: BooleanExpressionNode;
  right?: BooleanExpressionNode;
  expression?: BooleanExpressionNode;
}

const { compileBooleanMatcher } = require("webpack/lib/util/compileBooleanMatcher");

// Compile matcher for conditional builds
const matcher = compileBooleanMatcher("production && !development");

// Test against build conditions
const isMatch = matcher("production"); // true
const isMatchDev = matcher("development"); // false

// Complex expressions
const complexMatcher = compileBooleanMatcher("(web || electron) && !node");
console.log(complexMatcher("web")); // true
console.log(complexMatcher("node")); // false

class Template {
  /**
   * Indent multiline strings
   * @param str - String to indent
   * @param prefix - Indentation prefix (default: "\t")
   * @returns Indented string
   */
  static indent(str: string | string[], prefix?: string): string;
  
  /**
   * Convert string to identifier
   * @param str - String to convert
   * @returns Valid JavaScript identifier
   */
  static toIdentifier(str: string): string;
  
  /**
   * Convert string to comment
   * @param str - String to convert
   * @returns Valid JavaScript comment
   */
  static toComment(str: string): string;
  
  /**
   * Convert to normal comment
   * @param str - String to convert
   * @returns Normal comment string
   */
  static toNormalComment(str: string): string;
  
  /**
   * Convert string to path
   * @param str - String to convert
   * @returns Path string
   */
  static toPath(str: string): string;
  
  /**
   * Generate number to identifier mapping
   * @param n - Number to convert
   * @returns Short identifier string
   */
  static numberToIdentifier(n: number): string;
  
  /**
   * Generate identifier to number mapping
   * @param identifier - Identifier string
   * @returns Corresponding number
   */
  static identifierToNumber(identifier: string): number;
  
  /**
   * Escape string for JavaScript
   * @param str - String to escape
   * @returns Escaped string
   */
  static quoteMeta(str: string): string;
  
  /**
   * Join array with separators
   * @param array - Array to join
   * @param separator - Separator string
   * @returns Joined string
   */
  static asString(array: (string | number)[], separator?: string): string;
  
  /**
   * Prefix each line with given string
   * @param str - String to process
   * @param prefix - Prefix for each line
   * @returns Prefixed string
   */
  static prefix(str: string, prefix: string): string;
  
  /**
   * Create property access string
   * @param properties - Property path array
   * @returns Property access code
   */
  static property(properties: (string | number)[]): string;
}

const { Template } = require("webpack/lib/Template");

// Generate indented code
const code = Template.indent([
  "function myFunction() {",
  Template.indent("return 'hello';"),
  "}"
]);

// Convert to valid identifier
const identifier = Template.toIdentifier("my-module-name"); // "my_module_name"

// Generate property access
const propertyAccess = Template.property(["exports", "default"]); // "exports.default"

// Create comments
const comment = Template.toComment("This is a generated module");

// Escape strings
const escaped = Template.quoteMeta("string with 'quotes'");

class Stats {
  /** Associated compilation */
  compilation: Compilation;
  
  /**
   * Constructor for Stats
   * @param compilation - Compilation instance
   */
  constructor(compilation: Compilation);
  
  /**
   * Check if compilation has errors
   * @returns True if errors exist
   */
  hasErrors(): boolean;
  
  /**
   * Check if compilation has warnings
   * @returns True if warnings exist
   */
  hasWarnings(): boolean;
  
  /**
   * Convert stats to JSON
   * @param options - Stats options
   * @returns JSON representation
   */
  toJson(options?: StatsOptions | string): StatsCompilation;
  
  /**
   * Convert stats to string
   * @param options - Stats options
   * @returns Formatted string
   */
  toString(options?: StatsOptions | string): string;
}

class MultiStats {
  /** Array of child stats */
  stats: Stats[];
  
  /**
   * Constructor for MultiStats
   * @param stats - Array of Stats instances
   */
  constructor(stats: Stats[]);
  
  /**
   * Check if any compilation has errors
   * @returns True if any errors exist
   */
  hasErrors(): boolean;
  
  /**
   * Check if any compilation has warnings
   * @returns True if any warnings exist
   */
  hasWarnings(): boolean;
  
  /**
   * Convert multi-stats to JSON
   * @param options - Stats options
   * @returns JSON representation with children array
   */
  toJson(options?: StatsOptions | string): { children: StatsCompilation[] };
  
  /**
   * Convert multi-stats to string
   * @param options - Stats options
   * @returns Formatted string representation
   */
  toString(options?: StatsOptions | string): string;
}

interface StatsOptions {
  /** Include asset information */
  assets?: boolean;
  /** Include chunk information */
  chunks?: boolean;
  /** Include module information */
  modules?: boolean;
  /** Include reasons for including modules */
  reasons?: boolean;
  /** Include source code of modules */
  source?: boolean;
  /** Include error details */
  errorDetails?: boolean;
  /** Maximum number of modules to show */
  maxModules?: number;
  /** Include colors in output */
  colors?: boolean;
  /** Include performance hints */
  performance?: boolean;
  /** Include timing information */
  timings?: boolean;
  /** Include built at timestamp */
  builtAt?: boolean;
  /** Include version information */
  version?: boolean;
  /** Include hash information */
  hash?: boolean;
  /** Include public path */
  publicPath?: boolean;
  /** Preset configurations */
  preset?: "errors-only" | "errors-warnings" | "minimal" | "normal" | "verbose";
}

const webpack = require("webpack");
const config = require("./webpack.config");

webpack(config, (err, stats) => {
  if (err || stats.hasErrors()) {
    console.error("Build failed!");
    if (stats) {
      console.error(stats.toString("errors-only"));
    }
    return;
  }
  
  // Success - show build info
  console.log(stats.toString({
    colors: true,
    chunks: false,
    modules: false,
    assets: true
  }));
  
  // Get detailed JSON stats
  const jsonStats = stats.toJson("verbose");
  console.log(`Build completed in ${jsonStats.time}ms`);
});

class Cache {
  /**
   * Constructor for Cache
   * @param options - Cache options
   */
  constructor(options: CacheOptions);
  
  /**
   * Get cache item
   * @param identifier - Cache key
   * @param etag - Entity tag for cache validation
   * @param callback - Callback with cached value
   */
  get<T>(
    identifier: string,
    etag: string | null,
    callback: (err: Error | null, result: T | null) => void
  ): void;
  
  /**
   * Store cache item
   * @param identifier - Cache key
   * @param etag - Entity tag for cache validation
   * @param data - Data to cache
   * @param callback - Completion callback
   */
  store<T>(
    identifier: string,
    etag: string | null,
    data: T,
    callback: (err?: Error) => void
  ): void;
  
  /**
   * Store build dependencies
   * @param dependencies - Build dependencies
   * @param callback - Completion callback
   */
  storeBuildDependencies(
    dependencies: Iterable<string>,
    callback: (err?: Error) => void
  ): void;
  
  /**
   * Begin idle period
   * @param callback - Completion callback
   */
  beginIdle(callback?: () => void): void;
  
  /**
   * End idle period
   * @param callback - Completion callback
   */
  endIdle(callback?: (err?: Error) => void): void;
  
  /**
   * Shutdown cache
   * @param callback - Completion callback
   */
  shutdown(callback?: (err?: Error) => void): void;
}

class CacheFacade {
  /**
   * Constructor for CacheFacade
   * @param cache - Underlying cache instance
   * @param name - Cache name/namespace
   * @param defaultTtl - Default TTL in milliseconds
   */
  constructor(cache: Cache, name: string, defaultTtl?: number);
  
  /**
   * Get item with promise interface
   * @param identifier - Cache key
   * @param etag - Entity tag for validation
   * @returns Promise with cached value
   */
  getPromise<T>(identifier: string, etag?: string | null): Promise<T | null>;
  
  /**
   * Store item with promise interface
   * @param identifier - Cache key
   * @param etag - Entity tag for validation
   * @param data - Data to cache
   * @returns Promise for completion
   */
  storePromise<T>(identifier: string, etag: string | null, data: T): Promise<void>;
  
  /**
   * Provide cached or computed value
   * @param identifier - Cache key
   * @param etag - Entity tag for validation
   * @param computer - Function to compute value if not cached
   * @returns Promise with value
   */
  provide<T>(
    identifier: string,
    etag: string | null,
    computer: () => T | Promise<T>
  ): Promise<T>;
}

interface CacheOptions {
  /** Cache type */
  type?: "memory" | "filesystem";
  /** Cache directory for filesystem cache */
  cacheDirectory?: string;
  /** Build dependencies */
  buildDependencies?: Record<string, string[]>;
  /** Cache name */
  name?: string;
  /** Cache version */
  version?: string;
  /** Maximum age in milliseconds */
  maxAge?: number;
  /** Maximum memory usage */
  maxMemoryUsage?: number;
  /** Compression */
  compression?: false | "gzip" | "brotli";
}

const { Cache, CacheFacade } = require("webpack/lib/Cache");

// Create cache with filesystem backend
const cache = new Cache({
  type: "filesystem",
  cacheDirectory: "./node_modules/.cache/webpack",
  buildDependencies: {
    config: ["webpack.config.js"],
    code: ["src/**"]
  }
});

// Create facade for specific cache namespace
const moduleCache = new CacheFacade(cache, "modules", 1000 * 60 * 60); // 1 hour TTL

// Cache expensive computation
const result = await moduleCache.provide(
  "my-module-key",
  "etag-12345",
  async () => {
    // Expensive computation here
    return await processModule(moduleSource);
  }
);

// Direct cache operations
moduleCache.storePromise("processed-module", "v1", processedData);
const cached = await moduleCache.getPromise("processed-module", "v1");

class WebpackError extends Error {
  /** Error name */
  name: string;
  
  /** Error message */
  message: string;
  
  /** Error details */
  details?: string;
  
  /** Module that caused the error */
  module?: Module;
  
  /** Location in source where error occurred */
  loc?: SourceLocation;
  
  /** Hide error stack trace */
  hideStack?: boolean;
  
  /** Error chunk */
  chunk?: Chunk;
  
  /** Error file */
  file?: string;
  
  /**
   * Constructor for WebpackError
   * @param message - Error message
   * @param module - Associated module
   */
  constructor(message?: string, module?: Module);
  
  /**
   * Serialize error for caching
   * @param context - Serialization context
   * @returns Serialized error data
   */
  serialize(context: SerializationContext): any;
  
  /**
   * Deserialize error from cache
   * @param context - Serialization context
   * @returns WebpackError instance
   */
  static deserialize(context: SerializationContext): WebpackError;
}

class ModuleError extends WebpackError {
  /** Module that caused the error */
  module: Module;
  
  /**
   * Constructor for ModuleError
   * @param message - Error message
   * @param module - Module that caused error
   */
  constructor(message: string, module: Module);
}

class ModuleWarning extends WebpackError {
  /** Module that caused the warning */
  module: Module;
  
  /**
   * Constructor for ModuleWarning
   * @param message - Warning message
   * @param module - Module that caused warning
   */
  constructor(message: string, module: Module);
}

class ValidationError extends Error {
  /** Validation errors array */
  errors: ValidationErrorInfo[];
  
  /**
   * Constructor for ValidationError
   * @param errors - Array of validation errors
   * @param schema - Schema that was validated against
   * @param configuration - Configuration that failed validation
   */
  constructor(
    errors: ValidationErrorInfo[],
    schema: any,
    configuration: any
  );
}

interface ValidationErrorInfo {
  /** Property path that failed validation */
  dataPath: string;
  /** Schema path */
  schemaPath: string;
  /** Error keyword */
  keyword: string;
  /** Parameters for the error */
  params: Record<string, any>;
  /** Error message */
  message?: string;
}

interface SourceLocation {
  /** Line number (1-based) */
  line: number;
  /** Column number (0-based) */
  column: number;
  /** Character index */
  index?: number;
}

const { WebpackError, ModuleError, ValidationError } = require("webpack/lib/WebpackError");

// Create custom webpack error
class CustomBuildError extends WebpackError {
  constructor(message, module) {
    super(message, module);
    this.name = "CustomBuildError";
  }
}

// Throw module-specific error
if (moduleHasIssue) {
  throw new ModuleError("Module processing failed", module);
}

// Handle validation errors
try {
  validateConfiguration(config);
} catch (error) {
  if (error instanceof ValidationError) {
    console.error("Configuration validation failed:");
    error.errors.forEach(err => {
      console.error(`  ${err.dataPath}: ${err.message}`);
    });
  }
}

/**
 * Module filename helper utilities
 */
interface ModuleFilenameHelpers {
  /**
   * Create filename template function
   * @param template - Filename template string
   * @param options - Template options
   * @returns Function that generates filenames
   */
  createFilename(
    template: string | Function,
    options?: FilenameTemplateOptions
  ): (pathData: PathData) => string;
  
  /**
   * Replace path variables in template
   * @param template - Template string with variables
   * @param pathData - Data for variable replacement
   * @param assetInfo - Asset information
   * @returns Resolved template string
   */
  replaceDuplicates(
    template: string,
    pathData: PathData,
    assetInfo?: AssetInfo
  ): string;
  
  /**
   * Create filter function from test patterns
   * @param tests - Test patterns (string, RegExp, or array)
   * @returns Filter function
   */
  matchPart(tests: TestPatterns): (filename: string) => boolean;
  
  /**
   * Create object filter function
   * @param tests - Test patterns for object properties
   * @returns Object filter function
   */
  matchObject(tests: Record<string, TestPatterns>): (obj: Record<string, any>) => boolean;
  
  /**
   * Get absolute filename from module
   * @param module - Module instance
   * @returns Absolute filename or empty string
   */
  absolutify(module: Module): string;
  
  /**
   * Shorten absolute paths for display
   * @param filename - Absolute filename
   * @param context - Base context path
   * @returns Shortened relative path
   */
  contextify(filename: string, context: string): string;
}

type TestPatterns = string | RegExp | Array<string | RegExp> | ((value: string) => boolean);

interface PathData {
  /** Chunk information */
  chunk?: Chunk;
  /** Module information */
  module?: Module;
  /** Hash information */
  hash?: string;
  /** Content hash information */
  contenthash?: string;
  /** Chunk hash information */
  chunkhash?: string;
  /** Filename without query/fragment */
  filename?: string;
  /** Base name without extension */
  basename?: string;
  /** Query string */
  query?: string;
  /** Fragment identifier */
  fragment?: string;
  /** File extension */
  ext?: string;
  /** File path without filename */
  path?: string;
}

interface FilenameTemplateOptions {
  /** No hash length limit */
  noHashLength?: boolean;
  /** Context for relative paths */
  context?: string;
  /** Content hash type */
  contenthashType?: string;
  /** Hash digest encoding */
  hashDigest?: string;
  /** Hash digest length */
  hashDigestLength?: number;
  /** Hash function */
  hashFunction?: string;
  /** Hash salt */
  hashSalt?: string;
}

const ModuleFilenameHelpers: ModuleFilenameHelpers;

const { ModuleFilenameHelpers } = require("webpack/lib/ModuleFilenameHelpers");

// Create filename template function
const filenameTemplate = ModuleFilenameHelpers.createFilename(
  "[name].[contenthash:8].js",
  { hashDigestLength: 8 }
);

// Generate filename from path data
const filename = filenameTemplate({
  chunk: myChunk,
  hash: "abcdef123456",
  contenthash: "xyz789",
  basename: "main"
});

// Create filter for matching modules
const testFilter = ModuleFilenameHelpers.matchPart([
  /\.js$/,
  /\.jsx$/,
  "specific-module.js"
]);

// Filter modules
const jsModules = modules.filter(module => {
  return testFilter(module.resource || "");
});

// Shorten paths for display
const shortPath = ModuleFilenameHelpers.contextify(
  "/full/path/to/project/src/module.js",
  "/full/path/to/project"
); // "src/module.js"

class RequestShortener {
  /**
   * Constructor for RequestShortener
   * @param context - Base context directory
   * @param associatedObjectForCache - Object for cache association
   */
  constructor(context: string, associatedObjectForCache?: any);
  
  /**
   * Shorten absolute path relative to context
   * @param request - Absolute path to shorten
   * @returns Shortened path
   */
  shorten(request: string): string;
  
  /**
   * Shorten request with custom context
   * @param request - Request to shorten
   * @param context - Custom context path
   * @returns Shortened request
   */
  relatify(request: string, context?: string): string;
}

const { RequestShortener } = require("webpack/lib/RequestShortener");

// Create request shortener for project
const shortener = new RequestShortener("/project/root");

// Shorten module requests
const shortened = shortener.shorten("/project/root/src/components/Button.js");
// Result: "./src/components/Button.js"

const external = shortener.shorten("/node_modules/react/index.js");
// Result: "react/index.js"

// Custom context shortening
const relative = shortener.relatify(
  "/project/root/src/utils/helper.js",
  "/project/root/src/components"
);
// Result: "../utils/helper.js"

/**
 * webpack-sources integration utilities
 */
interface Sources {
  /** Raw source without transformation */
  RawSource: typeof RawSource;
  /** Original source with source map support */
  OriginalSource: typeof OriginalSource;
  /** Source with replacement capabilities */
  ReplaceSource: typeof ReplaceSource;
  /** Concatenated source from multiple sources */
  ConcatSource: typeof ConcatSource;
  /** Prefix source with additional content */
  PrefixSource: typeof PrefixSource;
  /** Cached source with lazy evaluation */
  CachedSource: typeof CachedSource;
  /** Size-only source for measurements */
  SizeOnlySource: typeof SizeOnlySource;
  /** Compatibility source wrapper */
  CompatSource: typeof CompatSource;
}

class RawSource {
  /**
   * Constructor for raw source
   * @param value - Source code string or buffer
   * @param convertToString - Whether to convert buffer to string
   */
  constructor(value: string | Buffer, convertToString?: boolean);
  
  /** Get source content */
  source(): string | Buffer;
  
  /** Get source map */
  sourceAndMap(options?: SourceMapOptions): { source: string | Buffer; map: SourceMap };
  
  /** Get source size */
  size(): number;
  
  /** Update hash with source content */
  updateHash(hash: Hash): void;
}

class OriginalSource {
  /**
   * Constructor for original source with source map
   * @param value - Source code
   * @param name - Source name/filename
   */
  constructor(value: string, name: string);
  
  /** Get source content */
  source(): string;
  
  /** Get original source map */
  sourceAndMap(options?: SourceMapOptions): { source: string; map: SourceMap };
  
  /** Get source size */
  size(): number;
}

class ConcatSource {
  /**
   * Constructor for concatenated source
   * @param sources - Sources to concatenate
   */
  constructor(...sources: (Source | string)[]);
  
  /**
   * Add source to concatenation
   * @param item - Source or string to add
   */
  add(item: Source | string): void;
  
  /** Get concatenated source */
  source(): string;
  
  /** Get source size */
  size(): number;
}

interface SourceMapOptions {
  /** Include source content in map */
  includeSourcesContent?: boolean;
  /** Module identifier */
  module?: boolean;
  /** Column mappings */
  columns?: boolean;
}

const sources: Sources;

const { sources } = require("webpack");
const { RawSource, ConcatSource, OriginalSource } = sources;

// Create raw source
const moduleSource = new RawSource('console.log("Hello World");');

// Concatenate multiple sources
const bundleSource = new ConcatSource(
  '(function() {\n',
  new RawSource('var exports = {};\n'),
  moduleSource,
  '\nreturn exports;\n',
  '})()'
);

// Original source with source map
const originalSource = new OriginalSource(
  'const message = "Hello";\nconsole.log(message);',
  'original-file.js'
);

// Get combined source
const finalSource = bundleSource.source();
const sourceMap = originalSource.sourceAndMap();

/**
 * CLI interface utilities
 */
interface CLIUtils {
  /**
   * Parse CLI arguments
   * @param args - Command line arguments array
   * @returns Parsed options object
   */
  parseArgs(args: string[]): CLIOptions;
  
  /**
   * Process webpack configuration from CLI
   * @param options - CLI options
   * @returns Webpack configuration
   */
  processConfigOptions(options: CLIOptions): Configuration;
  
  /**
   * Setup compiler with CLI options
   * @param config - Webpack configuration
   * @param options - CLI options
   * @returns Configured compiler
   */
  setupCompiler(config: Configuration, options: CLIOptions): Compiler;
  
  /**
   * Run webpack with CLI options
   * @param compiler - Webpack compiler
   * @param options - CLI options
   * @param callback - Completion callback
   */
  runCompiler(
    compiler: Compiler,
    options: CLIOptions,
    callback: (err: Error | null, stats?: Stats) => void
  ): void;
  
  /**
   * Format stats output for CLI
   * @param stats - Compilation stats
   * @param options - Format options
   * @returns Formatted output string
   */
  formatStats(stats: Stats, options?: StatsFormatOptions): string;
  
  /**
   * Handle CLI errors and exit codes
   * @param error - Error to handle
   * @param stats - Optional stats for context
   * @returns Exit code
   */
  handleError(error: Error | null, stats?: Stats): number;
}

interface CLIOptions {
  /** Entry point files */
  entry?: string | string[];
  /** Output configuration */
  output?: string;
  /** Build mode */
  mode?: "development" | "production" | "none";
  /** Configuration file path */
  config?: string;
  /** Environment variables */
  env?: Record<string, any>;
  /** Watch mode */
  watch?: boolean;
  /** Development server */
  devServer?: boolean;
  /** Stats output format */
  stats?: string | StatsOptions;
  /** Colors in output */
  color?: boolean;
  /** Progress reporting */
  progress?: boolean;
  /** Bail on first error */
  bail?: boolean;
  /** Profile performance */
  profile?: boolean;
  /** JSON output */
  json?: boolean | string;
}

interface StatsFormatOptions {
  /** Include colors */
  colors?: boolean;
  /** Show cached modules */
  cached?: boolean;
  /** Show cached assets */
  cachedAssets?: boolean;
  /** Exclude modules */
  exclude?: string | RegExp | Array<string | RegExp>;
  /** Maximum modules to display */
  maxModules?: number;
  /** Show reasons */
  reasons?: boolean;
  /** Show depth */
  depth?: boolean;
  /** Show used exports */
  usedExports?: boolean;
  /** Show provided exports */
  providedExports?: boolean;
}

const cli: CLIUtils;

const { cli } = require("webpack/lib/cli");

// Parse command line arguments
const options = cli.parseArgs(process.argv.slice(2));

// Process configuration from CLI options
const config = cli.processConfigOptions(options);

// Setup and run compiler
const compiler = cli.setupCompiler(config, options);

cli.runCompiler(compiler, options, (err, stats) => {
  if (err) {
    const exitCode = cli.handleError(err, stats);
    process.exit(exitCode);
  }
  
  // Format and display stats
  const output = cli.formatStats(stats, {
    colors: options.color,
    cached: false,
    reasons: options.verbose
  });
  
  console.log(output);
});

// Handle different output formats
if (options.json) {
  const jsonOutput = stats.toJson();
  if (typeof options.json === 'string') {
    require('fs').writeFileSync(options.json, JSON.stringify(jsonOutput, null, 2));
  } else {
    console.log(JSON.stringify(jsonOutput));
  }
}

/**
 * Runtime utilities for webpack's generated code
 */
const runtime: {
  /**
   * Get the current runtime
   * @returns Runtime identifier
   */
  getRuntime(): string | undefined;
  
  /**
   * Merge runtime sets
   * @param a - First runtime set
   * @param b - Second runtime set
   * @returns Merged runtime set
   */
  mergeRuntime(a: RuntimeSpec | undefined, b: RuntimeSpec | undefined): RuntimeSpec | undefined;
  
  /**
   * Subtract runtime from another
   * @param a - Base runtime set
   * @param b - Runtime set to subtract
   * @returns Resulting runtime set
   */
  subtractRuntime(a: RuntimeSpec | undefined, b: RuntimeSpec | undefined): RuntimeSpec | undefined;
  
  /**
   * Convert runtime to string
   * @param runtime - Runtime spec to stringify
   * @returns String representation
   */
  runtimeToString(runtime: RuntimeSpec): string;
  
  /**
   * Get all chunk runtime requirements
   * @param chunks - Chunks to analyze
   * @returns Set of runtime requirements
   */
  getChunkRuntimeRequirements(chunks: Iterable<Chunk>): Set<string>;
};

type RuntimeSpec = string | SortableSet<string> | boolean | undefined;

/**
 * Serialization utilities for webpack's caching system
 */
const serialization: {
  /**
   * Register a serializable class
   * @param constructor - Class constructor to register
   * @param name - Serialization name
   * @param serializer - Custom serializer object
   */
  register(constructor: any, name: string, serializer?: ObjectSerializer): void;
  
  /**
   * Create a binary serializer for efficient storage
   * @returns Binary serializer instance
   */
  createBinarySerializer(): BinarySerializer;
  
  /**
   * Create a hash serializer for content hashing
   * @returns Hash serializer instance
   */
  createHashSerializer(): HashSerializer;
  
  /**
   * Create a file serializer for disk caching
   * @param fs - File system to use
   * @returns File serializer instance
   */
  createFileSerializer(fs: FileSystem): FileSerializer;
};

interface ObjectSerializer {
  serialize(obj: any, context: ObjectSerializerContext): void;
  deserialize(context: ObjectDeserializerContext): any;
}

interface BinarySerializer {
  serialize(obj: any): Buffer;
  deserialize(buffer: Buffer): any;
}

/**
 * Compile a boolean matcher function from patterns
 * @param str - Pattern string or function
 * @returns Optimized boolean matcher function
 */
function compileBooleanMatcher(str: string | ((str: string) => boolean)): (str: string) => boolean;

/**
 * Create cached boolean matcher for better performance
 * @param str - Pattern string or function
 * @returns Cached boolean matcher function
 */
function createCachedBooleanMatcher(str: string | ((str: string) => boolean)): (str: string) => boolean;

/**
 * Webpack sources library exports for source manipulation
 */
const sources: {
  Source: typeof Source;
  RawSource: typeof RawSource;
  OriginalSource: typeof OriginalSource;
  ReplaceSource: typeof ReplaceSource;
  SourceMapSource: typeof SourceMapSource;
  ConcatSource: typeof ConcatSource;
  PrefixSource: typeof PrefixSource;
  CachedSource: typeof CachedSource;
  SizeOnlySource: typeof SizeOnlySource;
  CompatSource: typeof CompatSource;
};

// Basic source types from webpack-sources
interface Source {
  source(): string | Buffer;
  buffer(): Buffer;
  size(): number;
  map(options?: any): Object | null;
  sourceAndMap(options?: any): { source: string | Buffer; map: Object | null };
  updateHash(hash: Hash): void;
}

class RawSource implements Source {
  constructor(source: string | Buffer, convertToString?: boolean);
  source(): string | Buffer;
  buffer(): Buffer;
  size(): number;
  map(options?: any): null;
  sourceAndMap(options?: any): { source: string | Buffer; map: null };
  updateHash(hash: Hash): void;
}

class ConcatSource implements Source {
  constructor(...sources: (string | Source)[]);
  add(source: string | Source): void;
  source(): string;
  buffer(): Buffer;
  size(): number;
  map(options?: any): Object | null;
  sourceAndMap(options?: any): { source: string; map: Object | null };
  updateHash(hash: Hash): void;
}

interface Module {
  /** Module identifier */
  identifier(): string;
  /** Module resource path */
  resource?: string;
  /** Module type */
  type: string;
  /** Module source */
  source(): Source;
  /** Module size */
  size(): number;
  /** Module hash */
  hash?: string;
  /** Build info */
  buildInfo?: BuildInfo;
  /** Build meta */
  buildMeta?: BuildMeta;
}

interface Chunk {
  /** Chunk identifier */
  id: string | number | null;
  /** Chunk name */
  name?: string;
  /** Chunk hash */
  hash?: string;
  /** Content hash */
  contentHash: Record<string, string>;
  /** Chunk files */
  files: Set<string>;
  /** Chunk size */
  size(): number;
}

interface ChunkGroup {
  /** Chunk group name */
  name?: string;
  /** Child chunks */
  chunks: Chunk[];
  /** Parent groups */
  parents: Set<ChunkGroup>;
  /** Children groups */
  children: Set<ChunkGroup>;
}

interface Source {
  source(): string | Buffer;
  size(): number;
  sourceAndMap(options?: any): { source: string | Buffer; map: any };
  updateHash(hash: Hash): void;
}