v0.43.0

[etrepum]

v0.43.0 is a monthly release with breaking changes, new features, and a number of bug fixes across selection, tables, markdown, and extensions. Notable highlights include a new useExtensionSignalValue hook, and CSS theme options for Yjs collaboration cursors.

Outside of the release artifact, we've refreshed the lexical.dev website thanks to @m-santanna (and inspired by design mockups from @ixahmedxi). Importantly this refresh includes a set of modern examples (examples/website-* and examples/agent-example) that are embedded on the front page and showcase current best practices.

Breaking Changes

Asynchronous parent editor delegation #8308

@lexical/react nested editors now use asynchronous parent editor delegation when needed to match pre-0.42.0 legacy behavior.

New APIs

@lexical/react - useExtensionSignalValue #8286

A new @lexical/react/useExtensionSignalValue module is available for reading signal values from extension output within React components

Highlights

Core:

• ⚠️ [Breaking Change][lexical] Bug Fix: Use asynchronous parent editor delegation when needed #8308 Use asynchronous parent editor delegation when needed in nested editors
• ✅ [lexical] Fix: exclude Android WebView from IS_SAFARI browser detection #8267 Exclude Android WebView from IS_SAFARI browser detection
• ✅ [lexical] Fix: merge TextNodes when __state contains different number of default values #8273 Fix merging TextNodes when __state contains a different number of default values
• ✅ [lexical] Fix : Replaced the function $insertNodes with $insertNodeIntoLeaf for consistent behavior of Decorator Node within MarkNode #8266 Replace $insertNodes with $insertNodeIntoLeaf for consistent DecoratorNode behavior inside MarkNode

Code:

• ✅ [lexical-code-prism][lexical-code-shiki] Bug Fix: Remove usage of skipTransforms in CodeHighlighterPrism and CodeHighlighterShiki #8254 Remove usage of skipTransforms in CodeHighlighterPrism and CodeHighlighterShiki

Extension:

• 🆕 [lexical-react] Feature: Add @lexical/react/useExtensionSignalValue module for reading signals #8286 Add @lexical/react/useExtensionSignalValue module for reading signals from React

Examples:

• 🆕 [example] Feature: Add a new agent-example using a local LLM #8281 Add a new agent example using a local LLM (Transformers.js / in-browser)
• 🆕 [examples] Feature: Added examples (for the website)  #8258 Add additional website examples

Headless:

• ✅ [lexical-headless] Bug Fix: Use window.happyDOM.close() to ensure proper cleanup #8274 Use window.happyDOM.close() to ensure proper cleanup

Link:

• ✅ [lexical-link] Bug Fix: Preserve cursor position when merging adjacent identical links #8309 Preserve cursor position when merging adjacent identical links

Markdown:

• ✅ [lexical-markdown] Bug Fix: Preserve markdown hard line breaks during import when newlines are preserved #8265 Preserve hard line breaks during import when newlines are preserved

Playground:

• ✅ [lexical-playground] Bug Fix: Use isExactShortcutMatch for Dvorak keyboard compatibility #8260 Use isExactShortcutMatch for Dvorak keyboard compatibility

Selection:

• ✅ [lexical-selection] Bug Fix: Make $getSelectionStyleValueForProperty direction-independent #8261 Make $getSelectionStyleValueForProperty direction-independent

Table:

• ✅ [lexical-table] Bug Fix: Infer column header state from position during DOM import #8259 Infer column header state from position during DOM import

Utils:

• ✅ [lexical-utils][lexical-extension][*] Bug Fix: Fix $insertNodeIntoLeaf edge case and update @preact/signals-core, hermes, and flow related dependencies #8276 Fix $insertNodeIntoLeaf edge case; update @preact/signals-core, hermes, and flow dependencies

Yjs:

• 🆕 [lexical-yjs] Feature: Add CSS classes to collaboration cursor elements #8271 Add CSS classes to collaboration cursor elements

Infrastructure:

• 🧹 [lexical] Chore: Upgrade ESLint 8 to ESLint 10 with flat configuration #8287 Upgrade ESLint 8 → ESLint 10 with flat configuration
• 🧹 [*] Chore: Upgrade vite to ^7.3.2 #8307 Upgrade Vite to ^7.3.2
• 🧹 [*] Chore: Github CI workflows action updates and run with node 24 #8248 Update GitHub CI workflows and run with Node 24
• 🧹 [*] Chore: Update flow-bin to 0.306.0 and add incompatible-variance workaround #8253 Update flow-bin to 0.306.0 and add incompatible-variance workaround
• 🧹 Bump flow and replace legacy flow syntax with modern ones #8277 [*] Fix: Replace legacy Flow syntax with modern equivalents in .flow … #8315 Bump Flow and replace legacy Flow syntax with modern equivalents
• 🧹 [*] Chore: Update unit tests with extensions to use explicit resource management (using) #8243 Update unit tests with extensions to use explicit resource management (using)

What's Changed

• v0.42.0 by @etrepum in v0.42.0 #8245
• build(deps): bump next from 15.5.11 to 15.5.14 in /scripts/tests/integration/fixtures/lexical-esm-nextjs by @dependabot[bot] in build(deps): bump next from 15.5.11 to 15.5.14 in /scripts/__tests__/integration/fixtures/lexical-esm-nextjs #8242
• [examples] Chore: Update examples for v0.42.0 by @etrepum in [examples] Chore: Update examples for v0.42.0 #8246
• [*] Chore: Update unit tests with extensions to use explicit resource management (using) by @etrepum in [*] Chore: Update unit tests with extensions to use explicit resource management (using) #8243
• [*] Chore: Github CI workflows action updates and run with node 24 by @etrepum in [*] Chore: Github CI workflows action updates and run with node 24 #8248
• [*] Chore: Update flow-bin to 0.306.0 and add incompatible-variance workaround by @etrepum in [*] Chore: Update flow-bin to 0.306.0 and add incompatible-variance workaround #8253
• [lexical-code-prism][lexical-code-shiki] Bug Fix: Remove usage of skipTransforms in CodeHighlighterPrism and CodeHighlighterShiki by @etrepum in [lexical-code-prism][lexical-code-shiki] Bug Fix: Remove usage of skipTransforms in CodeHighlighterPrism and CodeHighlighterShiki #8254
• build(deps): bump astro from 5.18.0 to 5.18.1 in /scripts/tests/integration/fixtures/lexical-esm-astro-react by @dependabot[bot] in build(deps): bump astro from 5.18.0 to 5.18.1 in /scripts/__tests__/integration/fixtures/lexical-esm-astro-react #8262
• [lexical-selection] Bug Fix: Make $getSelectionStyleValueForProperty direction-independent by @Sathvik-Chowdary-Veerapaneni in [lexical-selection] Bug Fix: Make $getSelectionStyleValueForProperty direction-independent #8261
• [lexical-table] Bug Fix: Infer column header state from position during DOM import by @Sathvik-Chowdary-Veerapaneni in [lexical-table] Bug Fix: Infer column header state from position during DOM import #8259
• build(deps): bump happy-dom from 20.0.11 to 20.8.8 by @dependabot[bot] in build(deps): bump happy-dom from 20.0.11 to 20.8.8 #8264
• [lexical-playground] Bug Fix: Use isExactShortcutMatch for Dvorak keyboard compatibility by @Sathvik-Chowdary-Veerapaneni in [lexical-playground] Bug Fix: Use isExactShortcutMatch for Dvorak keyboard compatibility #8260
• [lexical] Fix: exclude Android WebView from IS_SAFARI browser detection by @kzroo in [lexical] Fix: exclude Android WebView from IS_SAFARI browser detection #8267
• [examples] Feature: Added examples (for the website) by @m-santanna in [examples] Feature: Added examples (for the website)  #8258
• [lexical] Fix : Replaced the function $insertNodes with $insertNodeIntoLeaf for consistent behavior of Decorator Node within MarkNode by @Jynx2004 in [lexical] Fix : Replaced the function $insertNodes with $insertNodeIntoLeaf for consistent behavior of Decorator Node within MarkNode #8266
• build(deps): bump happy-dom from 20.8.8 to 20.8.9 by @dependabot[bot] in build(deps): bump happy-dom from 20.8.8 to 20.8.9 #8269
• [lexical-website] Feature: ui improvement in the homepage of lexical.dev by @m-santanna in [lexical-website] Feature: ui improvement in the homepage of lexical.dev #8216
• [lexical] Fix: merge TextNodes when __state contains different number of default values by @james-atticus in [lexical] Fix: merge TextNodes when __state contains different number of default values #8273
• [lexical-headless] Bug Fix: Use window.happyDOM.close() to ensure proper cleanup by @etrepum in [lexical-headless] Bug Fix: Use window.happyDOM.close() to ensure proper cleanup #8274
• Bump flow and replace legacy flow syntax with modern ones by @SamChou19815 in Bump flow and replace legacy flow syntax with modern ones #8277
• [lexical-markdown] Bug Fix: Preserve markdown hard line breaks during import when newlines are preserved by @joshjryan in [lexical-markdown] Bug Fix: Preserve markdown hard line breaks during import when newlines are preserved #8265
• [lexical-website] Chore: community page updates by @etrepum in [lexical-website] Chore: community page updates #8270
• [lexical-utils][lexical-extension][*] Bug Fix: Fix $insertNodeIntoLeaf edge case and update @preact/signals-core, hermes, and flow related dependencies by @etrepum in [lexical-utils][lexical-extension][*] Bug Fix: Fix $insertNodeIntoLeaf edge case and update @preact/signals-core, hermes, and flow related dependencies #8276
• build(deps): bump lodash-es from 4.17.22 to 4.18.1 by @dependabot[bot] in build(deps): bump lodash-es from 4.17.22 to 4.18.1 #8279
• [lexical-yjs] Feature: Add CSS classes to collaboration cursor elements by @m-brtn in [lexical-yjs] Feature: Add CSS classes to collaboration cursor elements #8271
• [example] Feature: Add a new agent-example using a local LLM by @etrepum in [example] Feature: Add a new agent-example using a local LLM #8281
• [lexical-react] Feature: Add @lexical/react/useExtensionSignalValue module for reading signals by @etrepum in [lexical-react] Feature: Add @lexical/react/useExtensionSignalValue module for reading signals #8286
• [lexical-website] Documentation Update: clarify Yjs custom node property syncing by @Vedthakar in [lexical-website] Documentation Update: clarify Yjs custom node property syncing #8288
• [lexical] Chore: Upgrade ESLint 8 to ESLint 10 with flat configuration by @etrepum in [lexical] Chore: Upgrade ESLint 8 to ESLint 10 with flat configuration #8287
• [*] Chore: Upgrade vite to ^7.3.2 by @etrepum in [*] Chore: Upgrade vite to ^7.3.2 #8307
• [Breaking Change][lexical] Bug Fix: Use asynchronous parent editor delegation when needed by @etrepum in [Breaking Change][lexical] Bug Fix: Use asynchronous parent editor delegation when needed #8308
• [lexical-link] Bug Fix: Preserve cursor position when merging adjacent identical links by @Sathvik-Chowdary-Veerapaneni in [lexical-link] Bug Fix: Preserve cursor position when merging adjacent identical links #8309
• [*] Fix: Replace legacy Flow syntax with modern equivalents in .flow … by @potatowagon in [*] Fix: Replace legacy Flow syntax with modern equivalents in .flow … #8315

New Contributors

• @Sathvik-Chowdary-Veerapaneni made their first contribution in [lexical-selection] Bug Fix: Make $getSelectionStyleValueForProperty direction-independent #8261
• @kzroo made their first contribution in [lexical] Fix: exclude Android WebView from IS_SAFARI browser detection #8267
• @joshjryan made their first contribution in [lexical-markdown] Bug Fix: Preserve markdown hard line breaks during import when newlines are preserved #8265
• @m-brtn made their first contribution in [lexical-yjs] Feature: Add CSS classes to collaboration cursor elements #8271
• @Vedthakar made their first contribution in [lexical-website] Documentation Update: clarify Yjs custom node property syncing #8288

Full Changelog: v0.42.0...v0.43.0

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Project	Deployment	Actions	Updated (UTC)
lexical	Ready	Preview, Comment	Apr 9, 2026 4:36pm
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