• FIX: Unable to drag events in DayGrid views when using React 18 Strict Mode (#8119)
• FIX: event.setProp('resourceEditable', ...) was ignored with a warning (#5166)
• FIX: React "Maximum update depth exceeded" when validRange, visibleRange or hiddenDays is given as a new-but-equal value each render and datesSet sets state (#7069)
• FIX: When slotMaxTime is beyond 24h, the now-indicator disappears after midnight in Timeline views, and its arrow disappears in TimeGrid views (#6394)
• FIX: eventDrop reports oldResource/newResource when an event that isn't resource-editable is dragged over another resource, even though its resource doesn't change (#4943)

• FEATURE: Tajik locale, available as tg (#8066)
• FEATURE: Belarusian locale, available as be (#7839)
• FIX: Bulgarian accessibility hints for navigation, more-links, and closing popovers (#7494)
• FIX: German and Austrian German list-view hint read "Terminübersichtesansicht" (#7788)
• FIX: Czech today button said "now" instead of "today" (#7674)
• FIX: Korean navigation, year, list-view, and more-link translations (#8037)
• FIX: Farsi empty-calendar and more-link text, year navigation, and accessibility hints (#8033, #7546)
• FIX: Norwegian Nynorsk empty-calendar text and accessibility hints (#8083, #6050)

• legend: select only element nodes for legend template items (b69e7c5), closes #4250

• fix: non-string toolbar button text, like JSX, crashes rendering (#7120) (now warns and falls back to the button name. use v7's iconContent for custom button content)
• fix: style injection crashes when calendar is mounted in an iframe (#7301)
• fix: crash when inline styles are blocked by a Content Security Policy (#7353) (now warns instead. styles must be provided another way, or upgrade to v7, which distributes plain CSS files)
• fix: crash in Salesforce LWC with Lightning Web Security when querying CSP nonce (#7439)
• fix: in list view, clicking event with url and custom eventContent crashes instead of navigating (#6133)
• fix: batchRendering missing from CalendarApi type, e.g. for React's getApi() (#7227)

• fix: event.setProp('resourceEditable', ...) ignored with a warning (#5166)
• fix: React "Maximum update depth exceeded" when validRange, visibleRange or hiddenDays is a new-but-equal value each render and datesSet sets state (#7069)
• fix: when slotMaxTime is beyond 24h, now-indicator disappears after midnight in timeline views, and its arrow disappears in timegrid views (#6394)
• fix: eventDrop reports oldResource/newResource when an event that isn't resource-editable is dragged over another resource, even though its resource doesn't change (#4943)
• fix: event time cut off by long title with eventDisplay:'block' (#6457)

• feature: passing a v6 plugin to FullCalendar v7 now fails with a clear message naming the v7 import (v6 plugins carry a majorVersionError property. in TypeScript, the error replaces a cryptic one about premiumReleaseDate)
• docs: READMEs and npm descriptions of the v6-only packages, like @fullcalendar/daygrid, now say they're for v6 and name their v7 replacement

• Added support for Notification action buttons on Linux. #54890 ^{(Also in 45)}

• Fixed mouse cursor missing over native dialogs in certain scenarios on Windows. #54987
• Fixed net.fetch and session.fetch failing permanently with net::ERR_FAILED after the Network Service process restarts. #54909 ^{(Also in 42, 43, 45)}
• Fixed utilityProcess dropping messages posted with process.parentPort.postMessage() right before the process exits. #54960 ^{(Also in 42, 43, 45)}
• Fixed win.isFullScreen() being stale in fullscreen events on Windows. #55009 ^{(Also in 45)}

• Backported fixes from upstream Chromium and V8. #55034
• Updated Chromium to 152.0.7977.167. #54928
• Updated Node.js to v24.22.0. #55004

• Fixed a crash on Linux at startup or on theme change with GTK modules loaded. #55015
• Fixed an issue where clicks posted to a background app were dropped on macOS. #54906 ^{(Also in 43, 44, 45)}
• Fixed net.fetch and session.fetch failing permanently with net::ERR_FAILED after the Network Service process restarts. #54925 ^{(Also in 43, 44, 45)}
• Fixed utilityProcess dropping messages posted with process.parentPort.postMessage() right before the process exits. #55000 ^{(Also in 43, 45)}

• Backported fixes from upstream Chromium and V8. #55035

• Hoist app page request URL into render context: #99269
• Hide overlay editor button labels on smaller screens: #100266
• Prefer non-partial entries regardless of FetchStrategy: #99705
• [Partial Prefetching] Don't report vary params in responses that include dynamic data: #99700
• [Partial Prefetching] Small optimizations and fixes: #99695
• [Cached Navs] Extract the shell from a fully cached response: #99619
• Refactor the navigation fetch and decode layering: #99618
• [Cached Navs] Don't extract static stage: #99617
• Make error overlay editor actions easier to discover: #100206

• Turbopack: don't inherit API route config from parent layouts: #100243
• test: Add more segment config tests: #100242
• Add more test coverage for non-Partial Prefetching behavior: #100133
• chore: Remove package.json#workspaces: #100234
• docs: Add Pages Router upgrade guides for versions 15 and 16: #100247
• docs: note that 'use cache: private' results persist across requests in dev: #100252
• test: unskip tests for Turbopack: #100185

Huge thanks to @gnoff, @samselikoff, @mischnic, @acdlite, and @icyJoseph for helping!

• #6311 a1852f8 Thanks @dylans! - Add opt-in inlineEdgeAffinity and leafEdgeAffinity editor hooks and Editor.insertionPoint for consistent insertion at inline and mark boundaries. Implicit text, fragment and inline-node insertion at collapsed carets follows the configured rules, and Editor.marks reports the receiving leaf’s marks. Both hooks default to null, preserving existing behavior.

  BaseEditor now requires the two affinity hooks and the insertionPoint query. Editors created through createEditor receive them automatically; structurally constructed editors and editor mocks must supply them. Slate React disables native insertion when affinity changes the receiving point, while retaining compatibility with older supported Slate peers that lack the helper.

  Committed Android typing that changes receiving leaves uses the existing action reconciliation path, so a native mutation does not remain rendered in the old leaf. Active composition retains its existing diff path.

• #6311 a1852f8 Thanks @dylans! - Add opt-in inlineEdgeAffinity and leafEdgeAffinity editor hooks and Editor.insertionPoint for consistent insertion at inline and mark boundaries. Implicit text, fragment and inline-node insertion at collapsed carets follows the configured rules, and Editor.marks reports the receiving leaf’s marks. Both hooks default to null, preserving existing behavior.

  BaseEditor now requires the two affinity hooks and the insertionPoint query. Editors created through createEditor receive them automatically; structurally constructed editors and editor mocks must supply them. Slate React disables native insertion when affinity changes the receiving point, while retaining compatibility with older supported Slate peers that lack the helper.

  Committed Android typing that changes receiving leaves uses the existing action reconciliation path, so a native mutation does not remain rendered in the old leaf. Active composition retains its existing diff path.

• #6310 407a066 Thanks @dylans! - Add a filter option to insertFragment. It is called for each node in the fragment with the destination block entry and returns false to skip that node.

• #5937 428fd70 Thanks @kinaluo! - insertFragment now splits the block when block-level nodes such as a void image are pasted mid-block, so they land between the two halves instead of above the block, and the cursor moves to the start of the second half. Dropping a dragged block void onto the middle of a paragraph splits it the same way. Schemas that don't allow blocks inside a structure (for example a list item's text wrapper) should override insertFragment to move those nodes elsewhere before calling the original.

• Apply plugins set on a multi-configuration array to the MultiCompiler. (by @alexander-akait in #22702)

• Add optimization.minimize.css.dropOverriddenDeclarations, dropping a declaration a later one overrides where no target is named. (by @alexander-akait in #22175)

• Export more plugins under their scope, move eleven loose exports under theirs, deprecate the old, and expose template.DependencyTemplate, module.NullFactory and util.makeSerializable. (by @alexander-akait in #22261)

• Let util.makeSerializable take several requests, current one first. (by @alexander-akait in #22340)

• Emit the source map scopes field, so a debugger resolves imported ESM bindings by name. (by @alexander-akait in #21999)

• Add library.entryExports: "all" to expose the exports of every entry module. (by @alexander-akait in #22235)

• Recognize a required const binding assigned to exports as a re-export. (by @hai-x in #22276)

• Accept glob patterns in more path, module and file filter options. (by @hai-x in #22422)

• Bundle a run of inline <script> tags into one chunk the page can inline. (by @alexander-akait in #22188)

• Add module.parser.javascript.topLevelThis for classic-script this semantics. (by @alexander-akait in #22193)

• Add module.parser.html.chunkName and a webpackChunkName comment for tags. (by @alexander-akait in #22200)

• Add include/exclude version and request filters to shared modules. (by @alexander-akait in #22297)

• Keep module side-effect information in ESM output as PURE annotations. (by @alexander-akait in #21789)

• Add optimization.splitChunks.dedupDepth to discover chunk intersections. (by @alexander-akait in #22240)

• Add optimization.minimizeOptions.json, on by default with futureDefaults. (by @alexander-akait in #22286)

• Add SSRManifestPlugin and fix server-rendered CSS collection and adoption. (by @alexander-akait in #21913)

• Add an ignore hook to output.copy and keep unfollowed from symlinks. (by @alexander-akait in #22216)

• Add optimization.minimize.css.convertApproximateColors. (by @alexander-akait in #22157)

• Add XML parsing and SVG/XML minification with data URLs and attribute sorting. (by @alexander-akait in #22269)

• Extract CSS/HTML license comments like JS and safely shorten CSS gradients. (by @alexander-akait in #22408)

• Resolve an async DefinePlugin.runtimeValue over an async beforeParse hook. (by @alexander-akait in #22210)

• Add CSS customMedia/customSelectors minimize options; resolve chained names. (by @alexander-akait in #22360)

• Rename the Harmony* names to ESM* and deprecate the old spellings. (by @hai-x in #22283)

• Reduce css.syntax/html.syntax to parser, printer, SourceProcessor with one node path. (by @alexander-akait in #22233)

• Add a JavaScript SyntaxTree read like the CSS one, and toEstreeObject. (by @alexander-akait in #22608)

• Fix minified code that threw, and add pure_conversions and pure_heritage. (by @alexander-akait in #22473)

• Shorten more CSS values and selectors, fold longhands, order declarations and gather layer blocks. (by @alexander-akait in #22442)

• Add optimization.minimize.css.charset; false drops @charset for UTF-8 CSS. (by @alexander-akait in #22632)

• Join rules a gathered @layer leaves adjacent, and an at-rule with a later one (by @alexander-akait in #22204) stating the same condition; read what a condition declares.

• Read escaped CSS names and functions as spelled, and minify them unescaped. (by @alexander-akait in #22262)

• Minify JavaScript, CSS and HTML assets whose names carry a #fragment. (by @alexander-akait in #22277)

• Require minimizer-webpack-plugin 5.12, so inline scripts in HTML minify again. (by @alexander-akait in #22296)

• Minify the attributes of an HTML tag without rewriting the template in it. (by @alexander-akait in #22166)

• Order joined at-rule selector lists and gather a repeated large @layer block. (by @alexander-akait in #22224)

• Preserve case-sensitive template identifiers when minifying HTML tag attributes. (by @bjohansebas in #22177)

• Match Acorn's strict directives, Unicode identifiers and expression validation. (by @bjohansebas in #22185)

• Skip concatenating modules when optimization.providedExports is disabled. (by @hai-x in #22410)

• Join rules a nesting lowering or duplicate drop left for a second pass. (by @aryanraj45 in #22268)

• Write U+00A0 in a minified HTML attribute as the character, not  . (by @alexander-akait in #22208)

• Escape a foreign <script> or <style> body, which is character data. (by @alexander-akait in #22233)

• Name the runtime module whose generation fails while hashing. (by @alexander-akait in #22203)

• Rebuild a module in watch when its missing unused dependencies swap. (by @alexander-akait in #22693)

• Rebuild in watch mode when a file is deleted while a build is running. (by @alexander-akait in #22650)

• Take out the declaration a lowered shorthand writes over, which its source spelling made look like a fallback. (by @aryanraj45 in #22270)

• Read a foreign <script> or <style> body as character data, not as raw text. (by @alexander-akait in #22258)

• Keep an inline <style> body as written when rebuilding a page webpack emitted. (by @alexander-akait in #22265)

• Fix minified HTML for style spellings, CSS quotes, <noscript> and a BOM. (by @alexander-akait in #22370)

• Record a build dependency required through a spread on Bun. (by @alexander-akait in #22230)

• Write a nested selector opening on a combinator against its parent the way the printer writes one. (by @aryanraj45 in #22271)

• Fix missing async stylesheets with a shared runtime. (by @bjohansebas in #22659)

• Support deferred imports introduced by hot updates. (by @bjohansebas in #22668)

• Fix trailing commas in require.resolve() and require.resolveWeak() calls. (by @bjohansebas in #22658)

• Keep regular expressions, functions and plugins distinct in resolver caches. (by @bjohansebas in #22667)

• Order the list a lowered nested selector lands in on what is written, not on what was. (by @aryanraj45 in #22287)

• Hoist a vendor-prefixed nested rule for a target that reads no nesting. (by @aryanraj45 in #22308)

• Name a hoisted nested rule in the dark-scheme copy it writes. (by @alexander-akait in #22318)

• Minify data: URL payloads in HTML attributes and new URL, and web manifests. (by @alexander-akait in #22300)

• fold a fallback's colors over the author's arguments, and print with (by @aryanraj45 in #22314) recurseBlocks: false rather than throwing

• Read a regular expression repeating a capture group name in linear time. (by @alexander-akait in #22187)

• Make lazy barrels defer import declarations and keep no deferral across compilations. (by @hai-x in #22359)

• Invalidate unaffected caches when connection activity or async status changes. (by @bjohansebas in #22431)

• Order concatenated re-exports deterministically when their source order ties. (by @alexander-akait in #22697)

• Regenerate a module's exports when a require() cycle forms or breaks around it. (by @aryanraj45 in #22644)

• Recompute re-exports, code and warnings when a module goes missing or returns. (by @bjohansebas in #22432)

• Preserve loader resolution dependencies across cached rebuilds. (by @bjohansebas in #22430)

• Read unwatched changes afresh and wait for restarted watch compilers to finish. (by @alexander-akait in #22646)

• Parse loader output for .wasm as JavaScript when async wasm is auto-enabled. (by @alexander-akait in #22556)

• Remove modules an async chunk inherits from a named parent chunk grown later. (by @hai-x in #22555)

• Fix JavaScript minifier crashes, altered behavior, lost comments, unparsable output and null source map sources, including parameter aliases, ESTree trees and preserved names, and stop it writing into the caller's parse options. (by @alexander-akait in #22352)

• Preserve the source phase of dynamic WebAssembly import contexts. (by @bjohansebas in #22604)

• Await every async entry before resolving an ESM library import. (by @bjohansebas in #22617)

• Keep unknown import.meta properties per module, alike for aliases and direct use. (by @bjohansebas in #22618)

• Return WebAssembly modules directly from eager and weak source imports. (by @bjohansebas in #22606)

• Handle missing ESM hot update manifests in Node.js without failing HMR checks. (by @bjohansebas in #22613)

• Speed up JavaScript parsing: comment lookup, the tokenizer and the grammar. (by @bjohansebas in #22179)

• Name a core module external by its key whichever spelling the code uses. (by @alexander-akait in #22565)

• Prefix and drop 2009 flexbox names, keeping them where a box lays out by them. (by @alexander-akait in #22320)

• Keep initial where Gecko or WebKit reads the property's keyword apart. (by @aryanraj45 in #22176)

• Fold calc() as lightningcss does, keeping it where a bare value is refused. (by @aryanraj45 in #22205)

• Keep a color-mix() whose hue rests on a gray's conversion residue. (by @alexander-akait in #22198)

• Keep a shorthand's initial keyword where it parts two keywords of another slot. (by @dependabot in #22518)

• Group lib/ and lib/dependencies/ sources into directories. (by @alexander-akait in #22118)

• Treat a browserslist target given at a bare major version (e.g. safari 10) as <major>.0 when a feature's first supported version is a [major, minor] pair, so it is no longer reported as unsupported. (by @Eshiv-Pandey in #22280)

• Keep the last HMR update with output.clean; stop rechecking removed files. (by @alexander-akait in #22339)

• Read and print a CSS backslash as the spec does, and a NUL as U+FFFD. (by @alexander-akait in #22201)

• Make minified CSS and HTML stable on a second pass, even for truncated input. (by @alexander-akait in #22290)

• Minify a merged <style> run as one sheet, closing each where its input ended. (by @alexander-akait in #22302)

• Minify JavaScript with webpack's printer under futureDefaults, terser otherwise. (by @alexander-akait in #22217)

• Preserve wrappedContextRegExp flags when rebuilding context request matchers. (by @Eshiv-Pandey in #22303)

• Minify CSS @supports, @import and @custom-media conditions, and exponent numbers. (by @alexander-akait in #22347)

• Fold unitless hsl()/hwb() channels, and only where the separators are valid. (by @alexander-akait in #22242)

• Split @value imports on the from keyword, not a substring in the path. (by @Eshiv-Pandey in #22306)

• Destructure a dotted DefinePlugin key whose value is falsy or a runtimeValue. (by @alexander-akait in #22215)

• Make Stats.hasErrors() read errors through the processErrors hook (via getErrors()), matching hasWarnings(), so a plugin that filters errors out of the hook is no longer contradicted by hasErrors(). (by @Eshiv-Pandey in #22281)

• Allow wrapping an external concatenated module, now asked of the module itself, and re-exporting a JSON or asset default as a namespace object. (by @hai-x in #22226)

• Match urlHints rules written with and, or, not and glob conditions; profile hook map taps, such as resolver and parser hooks, in ProfilingPlugin; report import.meta option errors inside require.ensure callbacks, not crash; and replace any, object and Function with precise types in the type definitions. (by @alexander-akait in #22681)

• Reduce CSS and HTML build time and memory allocation. (by @alexander-akait in #22135)

• Reuse free names instead of re-parsing modules for the entry IIFE rename. (by @hai-x in #22206)

• Release each module's ast once scope-analysed, and encode each export path once. (by @alexander-akait in #22241)

• Export a module library entry's default expression as its own binding, and keep (by @hai-x in #22227) the export helpers where the entry is not inlined.

• Give a wrapped concatenated body the same function header as a module factory. (by @hai-x in #22254)

• Skip reading every asset when no content hash is named. (by @alexander-akait in #22256)

• Cut graph, cached set, lazy barrel and ESM import memory and allocations. (by @alexander-akait in #22289)

• Stop a module source from being held as both a string and a buffer. (by @alexander-akait in #22294)

• Read the browserslist data and options schema only when a build needs them. (by @alexander-akait in #22324)

• Release the eval devtool's cached module sources after wrapping them. (by @alexander-akait in #22358)

• Release the rendered module sources after emitting the chunks. (by @alexander-akait in #22365)

• Cut the peak memory and time of minifying through webpack's printer. (by @alexander-akait in #22368)

• Shrink minified JS: unwrap IIFEs, fold calls, drop dead code, split arrays. (by @alexander-akait in #22393)

• Cut JavaScript minifier time and memory; keep token positions in large inputs. (by @bjohansebas in #22329)

• Keep the calc() around a steps() count jump-none would reject bare. (by @alexander-akait in #22168)

• Split the CSS syntax module into a parser file and a printer file. (by @alexander-akait in #22222)

• Update enhanced-resolve to 5.26.0. (by @alexander-akait in #22358)

• Update watchpack to 2.6.1. (by @alexander-akait in #22670)

• Split the HTML syntax module into a parser file and a printer file. (by @alexander-akait in #22223)

• Rename classes in lib/ so each says what it does and no two share a name. (by @alexander-akait in #22361)

• Keep the remote fallback index aligned with registered container externals when an internal external precedes a real one. (by @Eshiv-Pandey in #22362)

• Stop a minified inlined chunk leaving a doubled ; in its <script>. (by @alexander-akait in #22370)

• Stop mergeDistantRules mangling rules or reordering all, and merge more. (by @alexander-akait in #22370)

• Minify by parsing with webpack's own parser rather than terser's. (by @alexander-akait in #22397)

• Read JavaScript with webpack's parser alone when minifying, refusing early errors. (by @alexander-akait in #22397)

• Parse an assert(...) call after an import with no semicolon, and a regular expression after yield in a generator method. (by @alexander-akait in #22406)

• Keep the private names a direct eval reads when mangling. (by @aryanraj45 in #22412)

• Keep a class dropped for its effects where they read a private name it declares. (by @aryanraj45 in #22421)

• Parenthesize the right side of a private in, a yield, await, private in or optional chain tagging a template, and a let or async starting a statement or loop head, where the minifier printed code that no longer parsed or read otherwise. (by @aryanraj45 in #22437)

• Keep a name a parameter list or catch parameter reads from resolving to what the function body or catch block declares, which the minifier renamed or dropped as unused. (by @aryanraj45 in #22439)

• Scope and export a CSS Modules @value the same way whether local or imported. (by @alexander-akait in #22443)

• Keep CSS border: none and gradient fallbacks for units a target cannot read. (by @alexander-akait in #22567)

• Keep minified CSS safe for older browsers; drop dead fallbacks and overrides. (by @alexander-akait in #22696)

• Keep CSS rules apart from a neighbor whose selector no browser parses. (by @alexander-akait in #22634)

• Keep an :nth-*() argument with a space after its sign as written. (by @alexander-akait in #22700)

• Keep minified CSS readable by browsers the compat data does not cover. (by @alexander-akait in #22701)

• Keep a module its chunk still needs after compilation.rebuildModule(). (by @alexander-akait in #22705)

• Keep a CSS rule nested under a selector opening on a combinator when lowering. (by @alexander-akait in #22707)

• Use module paths for webpack's built-in minimizers so parallel minification can load them directly in workers instead of serializing their function sources. (by @xiaoxiaojx in #22309)

• Keep stats from an earlier build readable after a later build no longer has one of their modules. (by @alexander-akait in #22695)

• #6084 dcae734 Thanks @a-y-ibrahim! - Keep the DOM and Slate value in sync when an insertText override rejects native text input, including insertions at decoration boundaries.