Update dependency webpack to v5

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
webpack	3.10.0 -> 5.21.2

---

Release Notes

webpack/webpack

v5.21.2

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Bugfixes

• json with constructor property now caches correctly
• json generation with object prototype property now works correctly
• tree shaking json array when accessing length property now works correctly
• fix incorrect call context when calling properties on imports from CommonJS modules

v5.21.1

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Bugfixes

• fix a crash when using colors in stats

v5.21.0

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Features

• add __webpack_base_uri__ to change base URI at runtime
• add stats.errorDetails: "auto" to show error details automatically when there are only 1 or 2 errors

Bugfixes

• fix a hanging build when using the persistent cache without a package.json in cwd

Developer Experience

• add typings for the stats JSON
• change default for stats.errorDetails to "auto" when using toString
• Highlight important text in error message with colors
  • e. g. Did you mean ...? and similar hints are shown in green

v5.20.2

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Bugfixes

• fix caching issue with asset modules causing undefined files
• fix problem that rebuildModule doesn't follow dependencies

v5.20.1

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Bugfix

• fix Caching failed for pack: RangeError [ERR_OUT_OF_RANGE] warning when serializing the cache

v5.20.0

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Features

• add experiments.lazyCompilation.imports to disable lazy compilation of import()s
• add experiments.lazyCompilation.test to allow custom selection of modules that should be lazy compiled
• When using profile: true resp. --profile webpack will now print a summary of expensive modules or loaders

Bugfixes

• fix that experiments.lazyCompilation.client now works as intended
• fix a bug which causes runtime requirements to be missing e. g. __webpack_require__ is not defined

Developer Experience

• expose EntryObject type in typings
• remove pkg-dir dependency

v5.19.0

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Features

• allow to set chunk name for exposes for ModuleFederationPlugin

Bugfixes

• add a missing simicolon in runtime code
• improve consistency of top level await with other implementations and the spec
• make options for ProgressPlugin optional in typings

Performance

• try to avoid unnecessary allocations

v5.18.0

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Internals

• refactor hashing to move the responsibility of hashing module exports info and referenced modules from Dependencies to the Module
  • Hashing in Dependencies can be much cheaper now (could improve performance when many dependencies are used that point to the same module, like many references to React.createElement)
  • Fixes bugs where Dependencies forgot to hash some details about the referenced module
  • The new model elimiates the potential of such bugs are Dependencies have less responsibilities now

v5.17.0

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Features

• add experimental lazy compilation via experiments.lazyCompilation: true for web and node targets
  • compiles entrypoints and import()s only when they are accessed
  • More details see: #​12469
  • Known issues: webpack-dev-server/webpack serve opening an entrypoint for the first time, sometimes need a manual refresh.
• move some javascript parsing related configuration options from module to module.parser.javascript and also allow to set them via module.rules
• add module.parser.javascript.commonjsMagicComments to enable /* webpackIgnore: true */ for require() calls

Bugfixes

• fix a problem with webpack.debug.ProfilingPlugin on Mac when the computer was suspended before.
• fix a bug with IIFE handling when the IIFE has parameters with default values

v5.16.0

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Features

• add __webpack_is_included__("./some-module") which returns true when the module is bundled and false when not
• priorize eager shared modules over normal shared modules (with the same version), as they are loaded anyway
• add library.type: "assign-properties" which merges all exports into a global variable
• allow optimization.innerGraph for new URL()
  • This allows to detect which URLs are used and drop the module and asset when they are not.

Bugfixes

• only return exports from runtime when needed
  • This allows to use experiments.outputModule: true with optimization.runtimeChunk
• fix a bug that splitChunk.reuseExistingChunk doesn't work for entrypoints
  • This optimized an edge case where a nearly empty entrypoint is created when an entrypoint contains only vendor modules

Developer Experience

• include plugin names in deprecation message for "NormalModuleFactory.xxx is no longer a waterfall hook"
• improve error message when passing an invalid library name

v5.15.0

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Features

• add getResolve method to data object when using function externals
• externals function may return a promise now

Bugfixes

• fix define("local-module", expr) generating invalid syntax
• fix resolving bug when resolving build dependencies
• add chunkModulesSpace to schema
• fix rebuildModule api

Performance

• improve performance of build dependencies resolving

v5.14.0

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Features

• add experimental ESM tracking for build dependencies

Bugfixes

• fix crash when calling watcher.getContextTimeInfoEntries()
• make filesystem types compatible with memfs and real fs
• fix rebuild error when using the AutomaticPrefetchPlugin

Contribution

• improve type definitions by using typescript 4.2

v5.13.0

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Features

• add resolve.preferAbsolute flag for compatibility with webpack 4
• add support for wildcards in exports and imports field
• improve chunk and module names
  • use nameForCondition() as fallback for module names
  • handle module connection with only transive side effects correctly when determining chunk root modules

v5.12.3

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Bugfixes

• upgrade @webassembly/* and terser-webpack-plugin dependencies

v5.12.2

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Bugfixes

• fix problem with typings in strict mode

v5.12.1

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Bugfixes

• fix a crash in ConcatenatedModule when deserializing
• fix some not serializable warnings
• show error when using an invalid identifier as var library

v5.12.0

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Features

• add experiments.layers
  • entry.xxx.layer: "name-of-layer" allows to set the layer for an entrypoint
  • module.rules[].issuerLayer: RuleCondition allows to filter/match by layer of issuer
  • module.rules[].layer: "name-of-layer" allows to set the layer of an module
  • splitChunks.cacheGroups.xxx.layer allows to select modules by layer
  • externals.byLayer["name-of-layer"] allows to specify externals by layer
  • externals.byLayer: (layer) => ... allows to specify externals by layer
  • externals function has an additional argument property contextInfo which contains info about the issuer (e. g. the layer)
• add module.parser and module.generator options to allow to specify parser/generator options globally per module type
• make chunkId variable available in script tag hook (like it was with webpack 4)

Bugfixes

• escape exclamation marks in context regexp when generating readable module names/ids
• fix a problem when bundling webpack bundles with enabled eval-based devtools
• add stats.nestedModulesSpace to schema to allow to specify this option
• fix a bug that incorrectly replaces new.target with constants
• fix a bug where splitChunk minSize is not handled correctly
• fix a bug where the order of splitChunk cacheGroups is not handled correctly
• avoid adding non-filesystem resources as dependencies for watching and caching

Developer experience

• fix incorrect negation in hint comment for eval-based devtools
• improve error messages of "Library/Chunk Loading/Wasm Loading typeof is not enabled" errors
• improve question message when asking to install webpack-cli
• show a warning when loaders/plugins report invalid dependencies to webpack

Contributing

• examples use webpack-cli 4 now
• rename memorize to memoize

v5.11.1

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Bugfixes

• ignore cloned ExportInfo during hashing
  • fixes a problem where changing modules affects hashes in some other part of the application during development
• fixes compileBooleanMatcher when prefix and suffix overlap
• fixes invalidate code generated when generating properties access
• fix object types in typings
• expose more types regarding Stats

v5.11.0

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Features

• update typings to include undefined/null types (for strict type)
• export WebpackError
• export Asset and AssetInfo types
• allow error configuration for validateSchema function

Bugfixes

• fix typings for SourceMapSource
• allow custom properties in AssetInfo
• handle undefined values for rule conditions like empty strings

v5.10.3

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Bugfixes

• errors in initial cache no longer cause build dependencies to be ignored
• manual side effects flagging should override automatic analysis
• modules in dlls without entryOnly will no longer be dropped because of no side effects

v5.10.2

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Bugfixes

• add a few missing node.js libraries as externals in target: "node"
• improve cache (de)serialization to allow larger cache files (>2GB) and increase performance for them

v5.10.1

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Bugfixes

• avoid duplicating chunk info in chunk loading global
• allow executing chunks before runtime is loaded
• avoid error when emitting assets with different query string but identical filename and content
• fix duplicated asset name in processAssets with additionalAssets
• add missing \ in module info header comment

v5.10.0

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Bugfixes

• Multiple fixes regarding the side effects optimization ("sideEffects": false) when reexports and concatenated modules are combined

Contributing

• Typescript major 4
  • Improved internal structure of our typings

Performance

• output.pathinfo: true (default in development) adds less verbose information (and is faster)
• output.pathinfo: "verbose" adds more verbose information
• output.pathinfo: true is cached
• avoid assets and module stats information generation when they are cached and cached assets/modules are not shown

v5.9.0

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Features

• improve side effects analysis to report imported and reexported symbols as side-effect-free

Bugfixes

• fix problem when HMR and different runtimes (e. g. with Workers)
  • caused crash with ... has no hash info for runtime ...

v5.8.0

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Features

• add the ability to process assets generated in later stages during processAssets
• new processAssets stage: PROCESS_ASSETS_STAGE_OPTIMIZE_INLINE
• add hooks to the RealContentHashPlugin to allow to process custom hashes (e. g. SRI)

Bugfixes

• fix typing for child compiler plugins
• SourceMapPlugin will process assets added in later stages during asset processing

v5.7.0

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Features

• CLI supports installing webpack-cli via pnpm

Bugfixes

• fix problem with ASI detection, causing semicolons inserted after if(...) etc.

v5.6.0

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Bugfixes

• emit warnings/errors for exports in commonjs modules for which we know that they don't exist

v5.5.1

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Bugfixes

• fix crash when __esModule is defined with defineProperty without value

v5.5.0

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Bugfixes

• fix ASI issues that occur between concatenated modules
• fix incorrect handling of [id] and etc. in SourceMap sources
• fix side-effect-free handling of exports for concatenated modules that causes an unused export
• make ESM-CJS interop handling consistent
  • make __esModule flag consistent exposed
  • handle non enumerable exports
  • handle inherited exports
  • handle exported Promises

v5.4.0

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Bugfixes

• fix renaming in super class expression in nested scopes
• fix parsing and handling of browserlist queries
• fix a few edge cases with ESM-CJS interop and .mjs
• fix ASI edge cases

v5.3.2

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Bugfixes

• runtime-dependent concatenated modules can generate code for runtime-dependent execution order of concatenated modules

v5.3.1

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Bugfixes

• fix incorrect concatenation of modules when multiple runtimes are involved
  • fixes a "This should not happen" error
  • fixes a __webpack_require__(null) problem
• run CLI correctly after installing
• fixes a huge performance issue when processing minimized code with SourceMap
• Use string[] types instead of [string, ...string[]] for arrays that must not be empty
  • this is more convinient to use

Performance

• avoid incorrect store of counts in the ProgressPlugin, which causes unneeded serialization of the Persistent Cache
• upgrade terser-webpack-plugin for performance improvements
• upgrade webpack-sources for performance improvements

v5.3.0

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Features and Bugfixes

• generate runtime conditional code when modules are forcefully merged from multiple runtimes
  • This fixes a Cannot read property 'call' of undefined error in webpack runtime, because modules are used that are not in the graph in one runtime
• disabled source code analysis for side effects in non-production modes
  • this causes unnecessary changes to parent modules in development
  • add optimization.sideEffects: "flag" as option for this

v5.2.1

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Bugfixes

• add watchOptions.followSymlinks option to schema
• fix hard crash when calling resolve with undefined value
• fix emit problem when files have hash in query string
• fix unneeded generation of SourceMaps when no devtool is used
  • fixes a huge performance regression with terser-webpack-plugin

v5.2.0

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Features

• add sourceFilename and javascriptModule to asset info for plugins

Bugfixes

• fix variable name collision when using module concatenation
• fix arrow functions in ie 11
• fix this externals with module concatenation
• force update for enhanced-resolve for critical bugfixes (see changelog)

v5.1.3

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Bugfixes

• omit unused modules from chunks when modules are only unused in some runtimes
  • fixes Self-reference dependency has unused export name error
• fix order of asset optimization to fix conflict between compression-plugin and real hash plugin

v5.1.2

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Bugfixes

• revert: omit unused modules from chunk when modules are only unused in some runtimes
  • caused issues with mini-css modules

v5.1.1

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Bugfixes

• fix order of chunk hashing to allow to uses hashes in WebWorkers
• update to terser-webpack-plugin 5
  • reduces number of dependencies by dropping webpack 4 support
• omit unused modules from chunk when modules are only unused in some runtimes
  • fixes Self-reference dependency has unused export name error
• fix hanging production builds because of infinite loop in inner graph optimization
• Compilation.deleteAsset updates chunk to file mappings

v5.1.0

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Features

• expose webpack property from Compiler
• expose cleverMerge, EntryOptionPlugin, DynamicEntryPlugin

Bugfixes

• missing require("..").xxx in try-catch produces a warning instead of an error now
• handle reexports in concatenated modules correctly when they are side-effect-free
• fix incorrect deprecation message for ModuleTemplate.hooks.hash

v5.0.0

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Announcement and changelog

v4.46.0

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Bugfixes

• fix behavior of defaults for resolve.roots to be backward-compatible

v4.45.0

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Features

• resolve server-relative requests relative to project context by default

Bugfixes

• fix a bug where splitChunk minSize is not handled correctly
• fix a bug where the order of splitChunk cacheGroups is not handled correctly

v4.44.2

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Bugfixes

• make sure to generate correct chunk connection for blocks that are only connected in some runtimes
  • fixes a bug where filename contains undefined hash at runtime

v4.44.1

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Bugfixes

• fix bug in sideEffects optimization when using export * from "non-esm" and a default export.
• add missing optional peerDependencies for webpack-cli and webpack-command to support Yarn 2

v4.44.0

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Features

• Improve sideEffects flag behavior when dynamic modules are part of the tree
  • Fixes a bug which causes empty modules (or type-only modules) to "break" Tree Shaking
• add splitChunks.enforceSizeThreshold to allow enfore splitting larger chunks unrelated from other limiations
  • Not set by default to avoid breaking change
  • It will be set by default to 50k in webpack 5
  • It's recommended to set it in webpack 4 too
• add support for resolve.roots and default resolve.roots: [context]
  • This allows to resolve server-relative urls (e.g. /src/abc) to the project root (or other locations when configured)
  • This allows to use loaders that rely on that behavior

Bugfixes

• fix bug where splitChunks produced non-optimal results when minSize is set to 0
  • This lead to NaNs in some places which breaks ordering
• Fix bug which lead to HMR not working for splitChunks in entrypoints
• force update watchpack and chokidar for chokidar bugfix which causes files to stop being watched

v4.43.0

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Features

• add module.hot.invalidate() to HMR API

Dependencies

• push versions for forced security updates

v4.42.1

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Bugfixes

• update webassemblyjs dependencies for instruction update
• update mkdirp dependency for security reasons

v4.42.0

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Bugfixes

• Disable constant replacements in "use asm" scope
• Update schema to disallow functions for output.hotUpdateChunkFilename as this doesn't work
• Hoist exports in concatenated module to handle circular references with non-concatenated modules correctly
• Flag all modules as used in DLLs to fix missing exports

v4.41.6

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Bugfixes

• Windows network paths are considered as absolute paths
• fix hanging of FlagDependencyExportsPlugin when using export * in a circular matter

v4.41.5

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Bugfixes

• handle relative paths with webpack:// prefix in SourceMaps correctly
• fixes a non-determinism about providedExports with export * which caused changing module hashes and unnecessary HMR invalidation

v4.41.4

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Bugfixes

• fix case where __webpack_require__.e is not a function when using module concatenation
• fix incorrect imported module when using sideEffects in a certain constellation of export names

Performance

• lazy-require Webassembly related modules for improved startup performance

v4.41.3

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Security

• force upgrade terser-webpack-plugin dependency for security fix (not affecting webpack)

Funding

• add npm funding field to package.json

v4.41.2

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Bugfixes

• fix issue with invalide timezone

v4.41.1

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Bugfixes

• fix incorrect request shortening when directory looks similar to parent directory
• fix crash when timezone is unknown

v4.41.0

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Developer Experience

• disallow cache group named test with shorthand syntax to point out a potential config error

Performance

• Improve performance of LimitChunkCountPlugin

v4.40.3

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Bugfixes

• fix a bug that the HMR plugin affected child compilations

Performance

• improve performance of splitChunks name option by caching hashed value
• improve rebuild performance by caching module size computation

v4.40.2

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Bugfixes

• fix a bug where asset is undefined

v4.40.1

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Bugfixes

• convert "multiple assets emit to the same filename" error into a warning
• compare asset content when multiple assets emit to the same filename

v4.40.0

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Features

• adds asset info for emitted assets
  • new methods allow easy emitting/updating of assets compilation.emitAsset/updateAsset (instead of accessing the Object compilation.assets)
  • new getter methods to get assets compilation.getAssets() and compilation.getAsset(name)
  • 3 flags in asset info:
    • immutable: when set an asset can be cache infinitely
    • development: when set an asset is some kind of development tool (i. e. a SourceMap)
    • hotModuleReplacement: when set an asset is generated for an hot update
  • Stats expose info object in assets
  • String version of Stats show flags

v4.39.3

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Bugfixes

• fix a missing module in chunk caused by incorrect chunk graph generation of async chunks

v4.39.2

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Bugfixes

• fix ProfilingPlugin not ending traces correctly

v4.39.1

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Bugfixes

• fix problem that progress lines were too long on some terminals
• fix a problem that ...100% is displayed instead of 100%

v4.39.0

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Features

• Infrastructure logger for node.js has now colors + symbols to mark different kind of messages
• Logger API has now a status method which allows to write temporary status messages
• ProgressPlugin default handler uses the Infrastructure Logger status message to output messages
• Placeholders in paths can now be escaped with i. e. [\id\]
• Compiler.hooks.assetEmitted have been added to get byte content of emitted assets

Bugfixes

• Logging output is now aligned to have space for symbols
• renamed Compiler.hooks.infrastructurelog to Compiler.hooks.infrastructureLog
• Properties that are defined on the Object.prototype can now be chunk ids (i. e. constructor)
• library.name now supports placeholders in libraryTarget: "system"
• 2 places were module profiles were incorrectly captured were fixed

Dependencies

• Forced upgrade of all direct dependencies
• webpack-sources + terser-webpack-plugin comes with quality optimizations for SourceMaps

v4.38.0

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Performance

• Improved performance of ProgressPlugin
• Improved performance of chunk graph generation
  • This can boost performance when many chunks are used, especially incremental build performance
  • Modules from parent chunks are now tracked during chunk graph generation, which allows to skip these modules in async chunks. This often renders optimization.removeAvailableModules unneeded, expect in scenarios where chunks are merged during optimization.
• optimization.removeAvailableModules is now disabled in development mode by default
  • optimization.removeAvailableModules will be disabled for all modes in next major release, feel free to disable it in production too if you want extra performance.

v4.37.0

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Features

• add logging API (see #​9436 for details)

v4.36.1

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Bugfixes

• fix regression in 4.36.0 when using happypack

v4.36.0

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Features

• SourceMapDevToolPlugin append option now supports the default placeholders in addition to [url]
• Arrays in resolve and parser options (Rule and Loader API) support backreferences with "..." when overriding options.

v4.35.3

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Bugfixes

• update acorn to include import()

Performance

• Improved runtime performance for large JSON modules

v4.35.2

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Bugfixes

• realResource must match absolute paths

v4.35.1

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Bugfixes

• add realResource condition in rule to schema
• fixes order of loaders when using a matchResource

v4.35.0

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Features

• ProgressPlugin limit output to column width in terminal
• add Watching.suspend and Watching.resume
• add splitChunks.automaticNameMaxLength and splitChunks.cacheGroups[x].automaticNameMaxLength

Bugfixes

• webworker target now respect publicPath when loading chunks
• holey arrays of configs will fail the validation

v4.34.0

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Features

• Error message when parsing fails shows used loaders now

Bugfixes

• importing the namespace object from non-ESM (CJS) modules no longer leads to an warning
• Error message in HMR logging works for Firefox too now
• Parser understands block scoping now

v4.33.0

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Features

• add target: "electron-preload" for electron 5
  • renderer should use target: "web" in electron 5

Bugfixes

• fix HMR rejection of removed and readded self-accepted modules

v4.32.2

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Bugfixes

• fix some weird schema validation messages
• fix problem in production mode (sideEffects + concatenation) which caused reexported values to become undefined (bug since 4.32.0)

v4.32.1

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Bugfixes

• reverts some changes from 4.32.0 which accidentally disabled some CommonJs features when using node: false.

v4.32.0

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Features

• Added this.mode to the loader API, to allow loaders to choose defaults by mode similar to webpacks options
• Stack Trace for Errors in rejected Promises from import() now includes the stack from where the import() was called

Bugfixes

• The Parser can now analyse identifiers in rest patterns too
  • const { a, ...rest } = obj, where rest conflicts with an imported binding etc.
• node: false now correctly disables __dirname and __filename too
• __dirname and __filename now no longer evaluates to something when node: false or node.__file/dirname: false is set
  • if(__dirname !== "") is no longer replaced with if(true) in such scenarios
• prefetching chunks is no executed after the initial module evaluation
  • This allows to override i. e. __webpack_public_path__ for prefetching too
• fixes a runtime crash when using side-effect-free modules with the DllPlugin

Contribute

• CI tests node.js 12 now too
• webpack-bot now merges dependabot PRs automatically when status checks succeed

v4.31.0

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Features

• add errors-warnings stats preset

Bugfixes

• allow top-level return in non-ESM modules

v4.30.0

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Features

• add amd: false to disable AMD support
• Compilation.hooks.finishModules now also allows async plugins
• add output.libraryTarget: "system" to compile for SystemJs environment

Bugfixes

• fix generating a null id when concatenating an entry module in a different chunk
• fix unneeded chunk references when splitting modules from chunks
• fix parsing of function name in function scope

Performance

• Lazy require some internal files
• Faster way to generate function headers

Contributing

• Run prettier on examples markdown

v4.29.6

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Bugfixes

• typeof __webpack_require__ and require.onError is no longer evaluated to undefined and evaluation is done at runtime instead.
• this value in module.hot.accept with imported dependency is correctly preserved.
• webassemblyjs updated to latest version

Contributing

• added a linting step to ensure all dependencies resolve to npm modules

v4.29.5

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Bugfixes

• update @webassemblyjs to remove git dependency

v4.29.4

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Bugfixes

• update @webassemblyjs for bugfixes

v4.29.3

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Bugfixes

• fixes a bug where import() context uses __webpack_require__.e, but it is not in the runtime
• WebpackErrors now console.log correctly in node > 10

v4.29.2

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Internal changes

• update dependencies

v4.29.1

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Bugfixes

• add missing __esModule flag when modules are concatenated, but without usage information

v4.29.0

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Important Note for npm users

This release updates some dependencies, which may trigger a npm bug. See here for the webpack issue. The npm bug has been fixed, but a new npm version has not been released yet.

For workarounds see this comment.

Eventually the fix will be to upgrade npm once the bugfix is released.

Features

• update acorn to v6
• limit the number of in parallel written output files to 15
• add output.futureEmitAssets which gives the emitting logic of webpack 5
  • assets are replaced with SizeOnlySources
  • reading assets after emitting is no longer allowed
  • This allows memory to be garbage-collected

v4.28.4

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Bugfixes

• ProfilingPlugin creates output path if not existing
• fixed support for arrow function functions for optimization.minimizer
• failed hooks is now also called when run() fails

v4.28.3

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Bugfixes

• ProfilingPlugin creates the output folder if necessary

v4.28.2

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Bugfixes

• fixes a crash when multiple IgnorePlugins are used

v4.28.1

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Bugfixes

• fix error in IgnorePlugin when no contextRegExp is passed

v4.28.0

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Features

• IgnorePlugin: checkResource has an additional context argument

Bugfixes

• Injection of node.js globals has been disabled for .mjs files as it's crashing

v4.27.1

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Bugfixes

• v4.27.0 accidentially introduced a breaking change. This reverts the change and restores the original behavior for splitChunks enforce.

v4.27.0

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Features

• When using functions as plugins they are now also called with the compiler as parameter
  • This make it possible to use arrow functions as plugins
• splitChunks.maxSize now emits a warning when minSize > maxSize
• Loaders have now access to a getResolve method to create their own resolver function with custom options

Bugfixes

• splitChunks.cacheGroups.xxx.enforce now behaves as documented and enforce chunk creation
• splitChunks.cacheGroups.xxx.enforce now no longer deletes minSize for maxSize
• fixes a bug where splitChunks cause cacheGroups to be incorrectly merged when using the same name
  • now conditions are considered per cacheGroup
  • the correct cache group comment is displayed in stats
• fixes a bug which causes providedExports not to be updated on rebuilds when using export * from

v4.26.1

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Bugfixes

• fix a bug where splitChunks.maxSize causes a hanging build
• fix a bug where splitChunks.maxSize crashes when minSize > maxSize
• fix a edgecase where splitChunks.maxSize can cause chunks bigger than minSize
• remove unnecessary code from global builtin

v4.26.0

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Features

• Switch from uglify-es to terser as default minimizer

Note: While they are officially backward-compatible, it can still happen that a new bugs occurs with terser, which break your production builds. Make sure to validate your production builds after upgrading to this version. (Note that it's always a good idea to test your output assets before deploying.)

If you want to report bugs to terser (https://github.com/terser-js/terser), please provide a minimal repro case with minimized and non-minimized code. You can configure webpack to generate non-minimized code in production mode by setting optimization.minimize: false. When reporting a bug to terser, best report a repro case which doesn't require running webpack and is reproducible with only the terser command line.

See optimization.minimizers configuration option to switch back to uglify-es or provide additional minimize options for terser.

v4.25.1

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Bugfixes

• fix replacement of compile-time constant expression when expression is a wrapped expression (string prefix and/or suffix).

v4.25.0

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Features

• add format option to DllPlugin to allow generating formated manifest json
• add flags to ProgressPlugin to add and remove information
  • entrypoint counter was added, but disabled by default to avoid breaking change

Bugfixes

• fix code generation for context dependencies when replacing compile-time constant expressions
• disable the effect of the ProvidePlugin for .mjs

v4.24.0

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Features

• allow to pass no dependencies to DefinePlugin runtime value
  • DefinePlugin.runtimeValue(() => {...}, true) is always evaluated
• add module argument to DefinePlugin.runtimeValue

Bugfixes

• update webassemblyjs dependency
• fix bug when using entry names that look like numbers with HMR

v4.23.1

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Bugfixes

• add space when replacing expression with constant
  • i. e. for code like return'development'===process.env.NODE_ENV&&'foo'

v4.23.0

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Features

• add watchMode flag to Compiler to be able to detect watch mode in plugins
• Prefer chunk names of entrypoints when merging chunks
• add removedFiles property to Compiler to detect removed files

Bugfixes

• publish declarations to npm
• upgrade @webassemblyjs/* for bugfix
• fix crash when using a side-effect-free wasm module in production mode

Internal changes

• test on node.js 12
• fix memory leak in test suite

v4.22.0

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Features

• Add support for evaluating && and || expressions

Bugfixes

• fix problems where order of things where not deterministic

Performance

• improve performance of chunk graph creation
  • this will improve rebuild performance in watch mode

v4.21.0

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Features

• add output.libraryTarget: "amd-require" which generates a AMD require([], ...) wrapper instead of a define([], ...) wrapper
• support arrays of strings passed to output.library, which exposes the library to a subproperty

Bugfixes

• fix cases where __webpack_require__.e is used at runtime but is not defined in the bundle
• fix behavior of externals of global type

Performance

• Some performance improvements to the chunk graph generation

v4.20.2

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Bugfixes

• keep comments in export default in concatenated modules

v4.20.1

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Bugfixes

• fix crash when using libraryTarget: "amd" without library name

v4.20.0

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Bugfixes

• update dependencies (webpack-sources, @​webassemblyjs/*)
• Handle errors thrown in renderes without crashing

Internal changes

• Extended typings
• Update internal structure of options schema to generate typings
  • Note: this exposed an issue in webpack-cli, you need to upgrade to webpack-cli@3.1.1

v4.19.1

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Bugfixes

• Internal requested filename for import() with target: "electron-main" uses correct path separator on windows
  (This fixes a problem with filemappings in vscode)
• devtool: "source-map" and variants generate SourceMaps when output file is .mjs
• browser field as object is used when using target: "electron-renderer"
• Comments near export default are preserved
• Passing an array as externals value, now works correctly as documented

v4.19.0

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Bugfixes

• Create a hash of the whole runtime code for the chunk/contenthash of entry chunks
  • Before hash was (incorrectly) calculated from (some) inputs

v4.18.1

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Bugfixes

• Update tapable version, which fixes a memory leak

v4.18.0

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Features

• Upgrade webassemblyjs dependency

v4.17.3

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Bugfixes

• Fix exit code when multiple CLIs are installed
• No longer recommend installing webpack-command, but still support it when installed

v4.17.2

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Bugfixes

• fix a spacing issue with the ProgressPlugin on some terminals
• force-upgrade webpack-sources for performance improvement (was already in semver range)

v4.17.1

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Bugfixes

• fix missing reexports in export * in a concatenated module

v4.17.0

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Features

• allow to provide custom functions to IgnorePlugin

Bugfixes

• remove incorrectly emitted dead code in concatenated modules
• chunk ids contribute to [contenthash] for js assets
• fix crash when trying to export globals in concatenated modules

v4.16.5

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Bugfixes

• (resource) query now works in import()
• adding entries multiple times now overrides properly
  • This caused an issue when using webpack-hot-client and runtime chunks

v4.16.4

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Bugfixes

• fix chunkAsset hook in HotModuleReplacementPlugin

v4.16.3

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Bugfixes

• fix missing modules with chunks nested in unneeded require.ensures.

v4.16.2

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Bugfixes

• handle module.require like require
• emit warnings for module.main.require and module.parent.require
• sort reasons in stats
• handle errors when parsing manifest in DllReferencePlugin

v4.16.1

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Bugfixes

• fix reversed order when using optimization.occurrenceOrder (default in production mode)
• output.hashDigest has a more relaxed schema
• update dependencies
• fix typo in schema

Internal changes

• typescript 3 rc

v4.16.0

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Features

• add wasm support for electron-renderer target
• add optimization.moduleIds and optimization.chunkIds options to replace other options

Bugfixes

• fix order of side effect evaluation for exported dependencies in side-effect-free modules
• fix some typos
• Support the case when passing an array to output.library.root and using a devtool
• fix a HMR logging message issue in browser where err.stack is not set
• add missing default extensions to the DllReferencePlugin
• module/chunk ids in Stats now sort numerical when they are numbers
• fix lost chunk reasons when using optimization.splitChunks.maxSize
• fix cases where Dependency.loc is a string instead of an object

Deprecations

• deprecated Dependency.compare in favor of compareLocations
• optimization.namedModules is now deprecated
• optimization.hashedModuleIds is now deprecated
• optimization.namedChunks is now deprecated
• optimization.occurrenceOrder is now deprecated

v4.15.1

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Bugfixes

• fix memory leaks when using HMR and in SplitChunksPlugin cache
• fix undefined automaticNameDelimiter in cache groups when using maxSize
• fix ProfilingPlugin for node.js 10 and 6

v4.15.0

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Features:

• add maxSize option for splitChunks (experimental)
• add a helpful error when using wasm in a initial chunk

v4.14.0

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Features

• add new hook Compilation.dependencyReference to modify the dependency references

Bugfixes

• Allow chunks to emit multiple assets to the same filename when hash matches

v4.13.0

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Features

• the DefinePlugin now supports runtimeValues to pass computed values with dependencies that can change over time
• added optimization.hashedModuleIds
• crossOrigin for chunks is only set when really needed
• added per chunk group indicies
• updated enhanced-resolve
  • You can now use absolute paths as keys to resolve.alias

Bugfixes

• when delegating CLI the bin fields are used
• when assigning indicies sync dependencies are now walked before async dependencies

v4.12.2

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Bugfixes

• fix crash when using invalid JSON with HMR
• fix missing modules when a side-effect-free package is root of module concatenation
• update chunkhash when entry-chunks list or prefetched chunks change

v4.12.1

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Bugfixes

• fix problem causing a stack overflow when reexporting circular
• fix a bug causing missing modules in bundles when using splitChunks
• run modules in correct order when using import with sideEffects: false
  • added order to DependencyReference
• add missing support for [chunkhash] in target: "webworker"
• fix bug causing incomplete profile (race condition) with the ProfilingPlugin

Internal changes

• Added more types
• lint files on commit with lint-staged

v4.12.0

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Features

• Errors from loaders show the loader path in the error message
• add support for optional catch and line and paragraph separator in strings (ES2019)

Bugfixes

• fixes a bug where chunks have duplicate ids when using records
• fix bubbling in HMR for import() when importing a non-ESM
• fix issue with in installing with pnpm
• update dependencies of the ProfilingPlugin

v4.11.1

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Features

• add optimization.mangleWasmImports option to disable mangling of wasm imports

Bugfixes

• disable wasm import mangling temporary because of bugs in the underlying wasm processing

v4.11.0

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