Features

• Added DotenvPlugin and top level dotenv option to enable this plugin
• Added WebpackManifestPlugin
• Added support the ignoreList option in devtool plugins
• Allow to use custom javascript parse function
• Added import.meta.env support for environment variables
• Added support for import.meta.dirname and import.meta.filename
• Added support import.defer() for statistical path
• Handle import.meta.main
• Added suport to setup named exports for JSON modules and disable usage named export for import file from "./file.json" with { type: "json" }
• Added support __dirname/__filename/import.meta.dirname/import.meta.filename for universal target
• [CSS] Added the exportType option with link (by default), "text" and css-style-sheet values
• [CSS] Added support for composes properties

Fixes

• The dependOn chunk must be loaded before the common chunk
• Return to namespace import when the external request includes a specific export
• No runtime extra runtime code for module libraries
• Delay HMR accept dependencies to preserve import attributes
• Properly handle external presets for universal target
• Fixed incorrect identifier of import binding for module externals
• Fixed when defer import and dynamic default export mixed
• Reduce generated output when globalThis supported
• Fixed loading async modules in defer import
• Reexport module for default import when no used exports for systemjs library
• Rename HarmonyExportDependencyParserPlugin exported id to CompatibilityPlugin tagged id
• Handle __dirname and __filename for ES modules
• Rename single nested __webpack_export__ and __webpack_require__ in already bundled code
• [Types] webpack function type
• [Types] NormalModule type
• [Types] Multi compiler configuration type
• [Types] Fixed regression in custom hashDigest type
• [CSS] No extra runtime for initial chunk
• [CSS] Fixed a lot of CSS modules bugs

Fixes

• Supported extends with env for browserslist
• Supported JSONP fragment format for web workers.
• Fixed dynamic import support in workers using browserslist.
• Fixed default defer import mangling.
• Fixed default import of commonjs externals for SystemJS format.
• Fixed context modules to the same file with different import attributes.
• Fixed typescript types.
• Improved import.meta warning messages to be more clear when used directly.
• [CSS] Fixed CC_UPPER_U parsing (E -> U) in tokenizer.

Features

• Added static analyze for dynamic imports
• Added support for import file from "./file.ext" with { type: "bytes" } to get the content as Uint8Array (look at example)
• Added support for import file from "./file.ext" with { type: "text" } to get the content as text (look at example)
• Added the snapshot.contextModule to configure snapshots options for context modules
• Added the extractSourceMap option to implement the capabilities of loading source maps by comment, you don't need source-map-loader (look at example)
• The topLevelAwait experiment is now stable (you can remove experiments.topLevelAwait from your webpack.config.js)
• The layers experiment is now stable (you can remove experiments.layers from your webpack.config.js)
• Added function matcher support in rule options

Fixes

• Fixed conflicts caused by multiple concatenate modules
• Ignore import failure during HMR update with ES modules output
• Keep render module order consistent
• Prevent inlining modules that have this exports
• Removed unused timeout attribute of script tag
• Supported UMD chunk format to work in web workers
• Improved CommonJs bundle to ES module library
• Use es-lexer for mjs files for build dependencies
• Fixed support __non_webpack_require__ for ES modules
• Properly handle external modules for CSS
• AssetsByChunkName included assets from chunk.auxiliaryFiles
• Use createRequire only when output is ES module and target is node
• Typescript types

Performance Improvements

• Avoid extra calls for snapshot
• A avoid extra jobs for build dependencies
• Move import attributes to own dependencies

Fixes

• Fixed resolve execution order issue from extra await in async modules
• Avoid empty block for unused statement
• Collect only specific expressions for destructuring assignment

Fixes

• Fixed syntax error when comment is on the last line
• Handle var declaration for createRequire
• Distinguish free variable and tagged variable

Fixes

• Filter deleted assets in processAdditionalAssets hook
• HMR failure in defer module
• Emit assets even if invalidation occurs again
• Export types for serialization and deserialization in plugins and export the ModuleFactory class
• Fixed the failure export of internal function for ES module chunk format
• Fixed GetChunkFilename failure caused by dependOn entry
• Fixed the import of missing dependency chunks
• Fixed when entry chunk depends on the runtime chunk hash
• Fixed module.exports bundle to ESM library
• Adjusted the time of adding a group depending on the fragment of execution time
• Fixed circle dependencies when require RawModule and condition of isDeferred
• Tree-shakable module library should align preconditions of allowInlineStartup

Fixes

• Fixed concatenate optimization for ESM that caused undefined export
• Respect the output.environment.nodePrefixForCoreModules option everywhere
• Respect the output.importMetaName option everywhere
• Fixed await async dependencies when accepting them during HMR
• Better typescript types

Features

• Added colors helpers for CLI
• Enable tree-shaking for ESM external modules with named imports
• Added the deferImport option to parser options

Performance Improvements

• Fixed a regression in module concatenation after implementing deferred import support
• Fixed a potential performance issue in CleanPlugin
• Avoid extra require in some places

Fixes

• Keep consistent CSS order
• Dependency without the source order attribute must keep their original index
• Keep module traversal consistent across reexport scenarios

Performance Improvements

• Extend importPhasesPlugin only when enable deferImport (#19689)

Fixes

• Tree-shaking unused ignored modules
• [Types] Compatibility with old Node.js versions

Fixes

• Fixed the case where an ES modules entry chunk depends on the runtime chunk hash
• Handle function exports in webpack module wrapper
• Ensure dependent chunks are imported before startup & fix duplicate export of 'default'
• Generate lose closing brace when exports are unprovided
• CleanPlugin doesn't unlink same file twice
• Fixed unexpected error codes from fs.unlink on Windows
• Typescript types

Features

• HMR support for ES modules output
• ES module output mode now fully supports splitChunks when external variables and runtimeChunk are not set.
• Added support using keyword
• Implemented tc39 Defer Module Evaluation (experiment)
• Support dynamic template literals expressions for new URL(...)
• Enable ES modules worker chunk loading for Node.js targets
• Improved support for destructing in DefinePlugin
• Added VirtualUrlPlugin to support virtual: scheme

Performance Improvements

• Remove useless startup entrypoint runtime for ES modules output
• Cache new URL(...) evaluate expression