maxGraph · tbouffard · Dec 23, 2025 · Dec 23, 2025 · Dec 23, 2025 · Dec 23, 2025
diff --git a/CLAUDE.md b/CLAUDE.md
@@ -290,6 +290,24 @@ if (isI18nEnabled()) { ... }
 const message = GlobalConfig.i18n.get('key', params, 'default');
 ```
 
+### Source Folder Naming
+
+When creating new folders in `packages/core/src/`, follow these naming conventions:
+- Use **singular** form (e.g., `handler/` not `handlers/`)
+- Use **kebab-case** (e.g., `my-feature/` not `myFeature/` or `my_feature/`)
+
+```text
+# Good
+packages/core/src/view/handler/
+packages/core/src/view/cell/
+packages/core/src/view/some-feature/
+
+# Bad
+packages/core/src/view/handlers/      # plural
+packages/core/src/view/someFeature/   # camelCase
+packages/core/src/view/some_feature/  # snake_case
+```
+
 ## Important Patterns
 
 ### Using Graph vs BaseGraph

diff --git a/...rialization/codecs/GraphViewCodec.test.ts → ...erialization/codec/GraphViewCodec.test.ts b/...rialization/codecs/GraphViewCodec.test.ts → ...erialization/codec/GraphViewCodec.test.ts
diff --git a/...ialization/codecs/StylesheetCodec.test.ts → ...rialization/codec/StylesheetCodec.test.ts b/...ialization/codecs/StylesheetCodec.test.ts → ...rialization/codec/StylesheetCodec.test.ts
diff --git a/...lization/codecs/all-graph-classes.test.ts → ...alization/codec/all-graph-classes.test.ts b/...lization/codecs/all-graph-classes.test.ts → ...alization/codec/all-graph-classes.test.ts
diff --git a/...erialization/codecs/mxgraph/utils.test.ts → ...serialization/codec/mxgraph/utils.test.ts b/...erialization/codecs/mxgraph/utils.test.ts → ...serialization/codec/mxgraph/utils.test.ts
@@ -15,7 +15,7 @@ limitations under the License.
 */
 
 import { describe, expect, test } from '@jest/globals';
-import { convertStyleFromString } from '../../../../src/serialization/codecs/mxGraph/utils';
+import { convertStyleFromString } from '../../../../src/serialization/codec/mxGraph/utils';
 import type { CellStyle } from '../../../../src';
 
 describe('convertStyleFromString', () => {

diff --git a/.../__tests__/serialization/codecs/shared.ts → ...e/__tests__/serialization/codec/shared.ts b/.../__tests__/serialization/codecs/shared.ts → ...e/__tests__/serialization/codec/shared.ts
diff --git a/...e/__tests__/view/mixins/CellMixin.test.ts → ...re/__tests__/view/mixin/CellMixin.test.ts b/...e/__tests__/view/mixins/CellMixin.test.ts → ...re/__tests__/view/mixin/CellMixin.test.ts
diff --git a/...ts__/view/mixins/ConnectionsMixin.test.ts → ...sts__/view/mixin/ConnectionsMixin.test.ts b/...ts__/view/mixins/ConnectionsMixin.test.ts → ...sts__/view/mixin/ConnectionsMixin.test.ts
diff --git a/...e/__tests__/view/mixins/EdgeMixin.test.ts → ...re/__tests__/view/mixin/EdgeMixin.test.ts b/...e/__tests__/view/mixins/EdgeMixin.test.ts → ...re/__tests__/view/mixin/EdgeMixin.test.ts
diff --git a/..._tests__/view/mixins/EditingMixin.test.ts → ...__tests__/view/mixin/EditingMixin.test.ts b/..._tests__/view/mixins/EditingMixin.test.ts → ...__tests__/view/mixin/EditingMixin.test.ts
diff --git a/..._tests__/view/mixins/FoldingMixin.test.ts → ...__tests__/view/mixin/FoldingMixin.test.ts b/..._tests__/view/mixins/FoldingMixin.test.ts → ...__tests__/view/mixin/FoldingMixin.test.ts
diff --git a/..._tests__/view/mixins/PanningMixin.test.ts → ...__tests__/view/mixin/PanningMixin.test.ts b/..._tests__/view/mixins/PanningMixin.test.ts → ...__tests__/view/mixin/PanningMixin.test.ts
diff --git a/...__tests__/view/mixins/VertexMixin.test.ts → .../__tests__/view/mixin/VertexMixin.test.ts b/...__tests__/view/mixins/VertexMixin.test.ts → .../__tests__/view/mixin/VertexMixin.test.ts
diff --git a/.../__tests__/view/plugins/FitPlugin.test.ts → ...e/__tests__/view/plugin/FitPlugin.test.ts b/.../__tests__/view/plugins/FitPlugin.test.ts → ...e/__tests__/view/plugin/FitPlugin.test.ts
diff --git a/...core/__tests__/view/plugins/index.test.ts → .../core/__tests__/view/plugin/index.test.ts b/...core/__tests__/view/plugins/index.test.ts → .../core/__tests__/view/plugin/index.test.ts
diff --git a/packages/core/src/editor/Editor.ts b/packages/core/src/editor/Editor.ts
@@ -17,7 +17,7 @@ limitations under the License.
 */
 
 import EditorPopupMenu from './EditorPopupMenu.js';
-import UndoManager from '../view/undoable_changes/UndoManager.js';
+import UndoManager from '../view/undoable-change/UndoManager.js';
 import EditorKeyHandler from './EditorKeyHandler.js';
 import EventSource from '../view/event/EventSource.js';
 import Client from '../Client.js';
@@ -38,29 +38,29 @@ import type { AbstractGraph } from '../view/AbstractGraph.js';
 import { Graph } from '../view/Graph.js';
 import SwimlaneManager from '../view/layout/SwimlaneManager.js';
 import LayoutManager from '../view/layout/LayoutManager.js';
-import RootChange from '../view/undoable_changes/RootChange.js';
-import ValueChange from '../view/undoable_changes/ValueChange.js';
-import CellAttributeChange from '../view/undoable_changes/CellAttributeChange.js';
+import RootChange from '../view/undoable-change/RootChange.js';
+import ValueChange from '../view/undoable-change/ValueChange.js';
+import CellAttributeChange from '../view/undoable-change/CellAttributeChange.js';
 import PrintPreview from '../view/other/PrintPreview.js';
 import Clipboard from '../util/Clipboard.js';
 import MaxLog from '../gui/MaxLog.js';
 import { isNode } from '../util/domUtils.js';
 import { getViewXml, getXml } from '../util/xmlUtils.js';
 import { load, post, submit } from '../util/requestUtils.js';
-import type PopupMenuHandler from '../view/plugins/PopupMenuHandler.js';
-import RubberBandHandler from '../view/plugins/RubberBandHandler.js';
+import type PopupMenuHandler from '../view/plugin/PopupMenuHandler.js';
+import RubberBandHandler from '../view/plugin/RubberBandHandler.js';
 import InternalEvent from '../view/event/InternalEvent.js';
 import InternalMouseEvent from '../view/event/InternalMouseEvent.js';
 import { CellStateStyle, MouseListenerSet } from '../types.js';
-import type ConnectionHandler from '../view/plugins/ConnectionHandler.js';
+import type ConnectionHandler from '../view/plugin/ConnectionHandler.js';
 import { show } from '../util/printUtils.js';
-import type PanningHandler from '../view/plugins/PanningHandler.js';
+import type PanningHandler from '../view/plugin/PanningHandler.js';
 import { cloneCell } from '../util/cellArrayUtils.js';
 import type MaxPopupMenu from '../gui/MaxPopupMenu.js';
 import { isNullish } from '../internal/utils.js';
 import { isI18nEnabled, translate } from '../internal/i18n-utils.js';
 import { error } from '../gui/guiUtils.js';
-import type { FitPlugin } from '../view/plugins/index.js';
+import type { FitPlugin } from '../view/plugin/index.js';
 
 /**
  * Extends {@link EventSource} to implement an application wrapper for a graph that

diff --git a/packages/core/src/index.ts b/packages/core/src/index.ts
@@ -15,12 +15,12 @@ limitations under the License.
 */
 
 // Contribution of Mixins to the Graph type (no side effects, types only)
-import './view/mixins/_graph-mixins-types.js';
+import './view/mixin/_graph-mixins-types.js';
 
 export { AbstractGraph } from './view/AbstractGraph.js';
 export { BaseGraph } from './view/BaseGraph.js';
 export { Graph } from './view/Graph.js';
-export * from './view/plugins/index.js';
+export * from './view/plugin/index.js';
 
 export { GraphDataModel } from './view/GraphDataModel.js';
 export { GraphView } from './view/GraphView.js';
@@ -30,17 +30,17 @@ export { default as PrintPreview } from './view/other/PrintPreview.js';
 export { default as SwimlaneManager } from './view/layout/SwimlaneManager.js';
 export { default as Client } from './Client.js';
 
-export { default as CellAttributeChange } from './view/undoable_changes/CellAttributeChange.js';
-export { ChildChange } from './view/undoable_changes/ChildChange.js';
-export { default as CollapseChange } from './view/undoable_changes/CollapseChange.js';
-export { default as CurrentRootChange } from './view/undoable_changes/CurrentRootChange.js';
-export { default as GeometryChange } from './view/undoable_changes/GeometryChange.js';
-export { RootChange } from './view/undoable_changes/RootChange.js';
-export { default as SelectionChange } from './view/undoable_changes/SelectionChange.js';
-export { default as StyleChange } from './view/undoable_changes/StyleChange.js';
-export { TerminalChange } from './view/undoable_changes/TerminalChange.js';
-export { default as ValueChange } from './view/undoable_changes/ValueChange.js';
-export { default as VisibleChange } from './view/undoable_changes/VisibleChange.js';
+export { default as CellAttributeChange } from './view/undoable-change/CellAttributeChange.js';
+export { ChildChange } from './view/undoable-change/ChildChange.js';
+export { default as CollapseChange } from './view/undoable-change/CollapseChange.js';
+export { default as CurrentRootChange } from './view/undoable-change/CurrentRootChange.js';
+export { default as GeometryChange } from './view/undoable-change/GeometryChange.js';
+export { RootChange } from './view/undoable-change/RootChange.js';
+export { default as SelectionChange } from './view/undoable-change/SelectionChange.js';
+export { default as StyleChange } from './view/undoable-change/StyleChange.js';
+export { TerminalChange } from './view/undoable-change/TerminalChange.js';
+export { default as ValueChange } from './view/undoable-change/ValueChange.js';
+export { default as VisibleChange } from './view/undoable-change/VisibleChange.js';
 
 export { EditorKeyHandler } from './editor/EditorKeyHandler.js';
 export { EditorPopupMenu } from './editor/EditorPopupMenu.js';
@@ -49,7 +49,7 @@ export { Editor } from './editor/Editor.js';
 
 export { default as CellHighlight } from './view/cell/CellHighlight.js';
 export { default as CellMarker } from './view/cell/CellMarker.js';
-export { ConnectionHandlerCellMarker } from './view/plugins/ConnectionHandler.js';
+export { ConnectionHandlerCellMarker } from './view/plugin/ConnectionHandler.js';
 export { default as CellTracker } from './view/cell/CellTracker.js';
 export { default as ConstraintHandler } from './view/handler/ConstraintHandler.js';
 export { default as EdgeHandler } from './view/handler/EdgeHandler.js';
@@ -91,8 +91,8 @@ export { default as Codec } from './serialization/Codec.js';
 export { default as CodecRegistry } from './serialization/CodecRegistry.js';
 export { default as ObjectCodec } from './serialization/ObjectCodec.js';
 export * from './serialization/ModelXmlSerializer.js';
-export * from './serialization/codecs/_model-codecs.js';
-export * from './serialization/codecs/_other-codecs.js';
+export * from './serialization/codec/_model-codecs.js';
+export * from './serialization/codec/_other-codecs.js';
 export * from './serialization/register-model-codecs.js';
 export * from './serialization/register-other-codecs.js';
 
@@ -239,8 +239,8 @@ export * as requestUtils from './util/requestUtils.js';
 export { default as AutoSaveManager } from './view/other/AutoSaveManager.js';
 export { default as Clipboard } from './util/Clipboard.js';
 
-export { default as UndoableEdit } from './view/undoable_changes/UndoableEdit.js';
-export { default as UndoManager } from './view/undoable_changes/UndoManager.js';
+export { default as UndoableEdit } from './view/undoable-change/UndoableEdit.js';
+export { default as UndoManager } from './view/undoable-change/UndoManager.js';
 
 export { Cell } from './view/cell/Cell.js';
 export { default as CellOverlay } from './view/cell/CellOverlay.js';

diff --git a/...rc/serialization/codecs/BaseGraphCodec.ts → ...src/serialization/codec/BaseGraphCodec.ts b/...rc/serialization/codecs/BaseGraphCodec.ts → ...src/serialization/codec/BaseGraphCodec.ts
diff --git a/...ore/src/serialization/codecs/CellCodec.ts → ...core/src/serialization/codec/CellCodec.ts b/...ore/src/serialization/codecs/CellCodec.ts → ...core/src/serialization/codec/CellCodec.ts
diff --git a/.../serialization/codecs/ChildChangeCodec.ts → ...c/serialization/codec/ChildChangeCodec.ts b/.../serialization/codecs/ChildChangeCodec.ts → ...c/serialization/codec/ChildChangeCodec.ts
@@ -15,7 +15,7 @@ limitations under the License.
 */
 
 import ObjectCodec from '../ObjectCodec.js';
-import ChildChange from '../../view/undoable_changes/ChildChange.js';
+import ChildChange from '../../view/undoable-change/ChildChange.js';
 import type Codec from '../Codec.js';
 import { isElement } from '../../internal/utils.js';
 

diff --git a/...erialization/codecs/GenericChangeCodec.ts → ...serialization/codec/GenericChangeCodec.ts b/...erialization/codecs/GenericChangeCodec.ts → ...serialization/codec/GenericChangeCodec.ts
diff --git a/...re/src/serialization/codecs/GraphCodec.ts → ...ore/src/serialization/codec/GraphCodec.ts b/...re/src/serialization/codecs/GraphCodec.ts → ...ore/src/serialization/codec/GraphCodec.ts
diff --git a/...rc/serialization/codecs/GraphViewCodec.ts → ...src/serialization/codec/GraphViewCodec.ts b/...rc/serialization/codecs/GraphViewCodec.ts → ...src/serialization/codec/GraphViewCodec.ts
diff --git a/...re/src/serialization/codecs/ModelCodec.ts → ...ore/src/serialization/codec/ModelCodec.ts b/...re/src/serialization/codecs/ModelCodec.ts → ...ore/src/serialization/codec/ModelCodec.ts
diff --git a/...c/serialization/codecs/RootChangeCodec.ts → ...rc/serialization/codec/RootChangeCodec.ts b/...c/serialization/codecs/RootChangeCodec.ts → ...rc/serialization/codec/RootChangeCodec.ts
@@ -15,7 +15,7 @@ limitations under the License.
 */
 
 import ObjectCodec from '../ObjectCodec.js';
-import RootChange from '../../view/undoable_changes/RootChange.js';
+import RootChange from '../../view/undoable-change/RootChange.js';
 import type Codec from '../Codec.js';
 import { isElement } from '../../internal/utils.js';
 

diff --git a/...c/serialization/codecs/StylesheetCodec.ts → ...rc/serialization/codec/StylesheetCodec.ts b/...c/serialization/codecs/StylesheetCodec.ts → ...rc/serialization/codec/StylesheetCodec.ts
diff --git a/...rialization/codecs/TerminalChangeCodec.ts → ...erialization/codec/TerminalChangeCodec.ts b/...rialization/codecs/TerminalChangeCodec.ts → ...erialization/codec/TerminalChangeCodec.ts
@@ -15,7 +15,7 @@ limitations under the License.
 */
 
 import ObjectCodec from '../ObjectCodec.js';
-import TerminalChange from '../../view/undoable_changes/TerminalChange.js';
+import TerminalChange from '../../view/undoable-change/TerminalChange.js';
 import type Codec from '../Codec.js';
 
 /**

diff --git a/...src/serialization/codecs/_model-codecs.ts → .../src/serialization/codec/_model-codecs.ts b/...src/serialization/codecs/_model-codecs.ts → .../src/serialization/codec/_model-codecs.ts
diff --git a/...src/serialization/codecs/_other-codecs.ts → .../src/serialization/codec/_other-codecs.ts b/...src/serialization/codecs/_other-codecs.ts → .../src/serialization/codec/_other-codecs.ts
diff --git a/...erialization/codecs/editor/EditorCodec.ts → ...serialization/codec/editor/EditorCodec.ts b/...erialization/codecs/editor/EditorCodec.ts → ...serialization/codec/editor/EditorCodec.ts
diff --git a/...on/codecs/editor/EditorKeyHandlerCodec.ts → ...ion/codec/editor/EditorKeyHandlerCodec.ts b/...on/codecs/editor/EditorKeyHandlerCodec.ts → ...ion/codec/editor/EditorKeyHandlerCodec.ts
diff --git a/...ion/codecs/editor/EditorPopupMenuCodec.ts → ...tion/codec/editor/EditorPopupMenuCodec.ts b/...ion/codecs/editor/EditorPopupMenuCodec.ts → ...tion/codec/editor/EditorPopupMenuCodec.ts
diff --git a/...ation/codecs/editor/EditorToolbarCodec.ts → ...zation/codec/editor/EditorToolbarCodec.ts b/...ation/codecs/editor/EditorToolbarCodec.ts → ...zation/codec/editor/EditorToolbarCodec.ts
diff --git a/.../src/serialization/codecs/editor/index.ts → ...e/src/serialization/codec/editor/index.ts b/.../src/serialization/codecs/editor/index.ts → ...e/src/serialization/codec/editor/index.ts
diff --git a/...rialization/codecs/mxGraph/mxCellCodec.ts → ...erialization/codec/mxGraph/mxCellCodec.ts b/...rialization/codecs/mxGraph/mxCellCodec.ts → ...erialization/codec/mxGraph/mxCellCodec.ts
diff --git a/...ization/codecs/mxGraph/mxGeometryCodec.ts → ...lization/codec/mxGraph/mxGeometryCodec.ts b/...ization/codecs/mxGraph/mxGeometryCodec.ts → ...lization/codec/mxGraph/mxGeometryCodec.ts
diff --git a/...src/serialization/codecs/mxGraph/utils.ts → .../src/serialization/codec/mxGraph/utils.ts b/...src/serialization/codecs/mxGraph/utils.ts → .../src/serialization/codec/mxGraph/utils.ts
diff --git a/...es/core/src/serialization/codecs/utils.ts → ...ges/core/src/serialization/codec/utils.ts b/...es/core/src/serialization/codecs/utils.ts → ...ges/core/src/serialization/codec/utils.ts
diff --git a/packages/core/src/serialization/register-model-codecs.ts b/packages/core/src/serialization/register-model-codecs.ts
@@ -20,7 +20,7 @@ import {
   ModelCodec,
   mxCellCodec,
   mxGeometryCodec,
-} from './codecs/_model-codecs.js';
+} from './codec/_model-codecs.js';
 import Geometry from '../view/geometry/Geometry.js';
 import Point from '../view/geometry/Point.js';
 import {

diff --git a/packages/core/src/serialization/register-other-codecs.ts b/packages/core/src/serialization/register-other-codecs.ts
@@ -28,15 +28,15 @@ import {
   RootChangeCodec,
   StylesheetCodec,
   TerminalChangeCodec,
-} from './codecs/_other-codecs.js';
+} from './codec/_other-codecs.js';
 import Rectangle from '../view/geometry/Rectangle.js';
 import ImageBox from '../view/image/ImageBox.js';
-import CellAttributeChange from '../view/undoable_changes/CellAttributeChange.js';
-import CollapseChange from '../view/undoable_changes/CollapseChange.js';
-import GeometryChange from '../view/undoable_changes/GeometryChange.js';
-import StyleChange from '../view/undoable_changes/StyleChange.js';
-import ValueChange from '../view/undoable_changes/ValueChange.js';
-import VisibleChange from '../view/undoable_changes/VisibleChange.js';
+import CellAttributeChange from '../view/undoable-change/CellAttributeChange.js';
+import CollapseChange from '../view/undoable-change/CollapseChange.js';
+import GeometryChange from '../view/undoable-change/GeometryChange.js';
+import StyleChange from '../view/undoable-change/StyleChange.js';
+import ValueChange from '../view/undoable-change/ValueChange.js';
+import VisibleChange from '../view/undoable-change/VisibleChange.js';
 import {
   CodecRegistrationStates,
   createObjectCodec,

diff --git a/packages/core/src/view/AbstractGraph.ts b/packages/core/src/view/AbstractGraph.ts
@@ -22,7 +22,7 @@ import EventSource from './event/EventSource.js';
 import InternalEvent from './event/InternalEvent.js';
 import Rectangle from './geometry/Rectangle.js';
 import Client from '../Client.js';
-import type PanningHandler from './plugins/PanningHandler.js';
+import type PanningHandler from './plugin/PanningHandler.js';
 import GraphView from './GraphView.js';
 import CellRenderer from './cell/CellRenderer.js';
 import Point from './geometry/Point.js';
@@ -31,12 +31,12 @@ import Cell from './cell/Cell.js';
 import GraphDataModel from './GraphDataModel.js';
 import { Stylesheet } from './style/Stylesheet.js';
 import { PAGE_FORMAT_A4_PORTRAIT } from '../util/Constants.js';
-import ChildChange from './undoable_changes/ChildChange.js';
-import GeometryChange from './undoable_changes/GeometryChange.js';
-import RootChange from './undoable_changes/RootChange.js';
-import StyleChange from './undoable_changes/StyleChange.js';
-import TerminalChange from './undoable_changes/TerminalChange.js';
-import ValueChange from './undoable_changes/ValueChange.js';
+import ChildChange from './undoable-change/ChildChange.js';
+import GeometryChange from './undoable-change/GeometryChange.js';
+import RootChange from './undoable-change/RootChange.js';
+import StyleChange from './undoable-change/StyleChange.js';
+import TerminalChange from './undoable-change/TerminalChange.js';
+import ValueChange from './undoable-change/ValueChange.js';
 import CellState from './cell/CellState.js';
 import { isNode } from '../util/domUtils.js';
 import { EdgeStyle } from './style/builtin-style-elements.js';
@@ -58,10 +58,10 @@ import type {
 } from '../types.js';
 import Multiplicity from './other/Multiplicity.js';
 import type ImageBundle from './image/ImageBundle.js';
-import { applyGraphMixins } from './mixins/_graph-mixins-apply.js';
+import { applyGraphMixins } from './mixin/_graph-mixins-apply.js';
 import { isNullish } from '../internal/utils.js';
 import { isI18nEnabled } from '../internal/i18n-utils.js';
-import type TooltipHandler from './plugins/TooltipHandler.js';
+import type TooltipHandler from './plugin/TooltipHandler.js';
 
 /**
  * Extends {@link EventSource} to implement a graph component for the browser. This is the entry point class of the package.

diff --git a/packages/core/src/view/Graph.ts b/packages/core/src/view/Graph.ts
@@ -29,7 +29,7 @@ import {
   registerDefaultEdgeStyles,
   registerDefaultPerimeters,
 } from './style/register.js';
-import { getDefaultPlugins } from './plugins/index.js';
+import { getDefaultPlugins } from './plugin/index.js';
 
 /**
  * An implementation of {@link AbstractGraph} that automatically loads some default built-ins (plugins, style elements).

diff --git a/packages/core/src/view/GraphDataModel.ts b/packages/core/src/view/GraphDataModel.ts
@@ -17,20 +17,20 @@ limitations under the License.
 */
 
 import EventSource from './event/EventSource.js';
-import UndoableEdit from './undoable_changes/UndoableEdit.js';
+import UndoableEdit from './undoable-change/UndoableEdit.js';
 import CellPath from './cell/CellPath.js';
 import Cell from './cell/Cell.js';
 import { isNumeric } from '../util/mathUtils.js';
 import EventObject from './event/EventObject.js';
 import InternalEvent from './event/InternalEvent.js';
-import ChildChange from './undoable_changes/ChildChange.js';
-import CollapseChange from './undoable_changes/CollapseChange.js';
-import GeometryChange from './undoable_changes/GeometryChange.js';
-import RootChange from './undoable_changes/RootChange.js';
-import StyleChange from './undoable_changes/StyleChange.js';
-import TerminalChange from './undoable_changes/TerminalChange.js';
-import ValueChange from './undoable_changes/ValueChange.js';
-import VisibleChange from './undoable_changes/VisibleChange.js';
+import ChildChange from './undoable-change/ChildChange.js';
+import CollapseChange from './undoable-change/CollapseChange.js';
+import GeometryChange from './undoable-change/GeometryChange.js';
+import RootChange from './undoable-change/RootChange.js';
+import StyleChange from './undoable-change/StyleChange.js';
+import TerminalChange from './undoable-change/TerminalChange.js';
+import ValueChange from './undoable-change/ValueChange.js';
+import VisibleChange from './undoable-change/VisibleChange.js';
 import Geometry from './geometry/Geometry.js';
 import type { CellStyle, FilterFunction } from '../types.js';
 

diff --git a/packages/core/src/view/GraphSelectionModel.ts b/packages/core/src/view/GraphSelectionModel.ts
@@ -19,8 +19,8 @@ limitations under the License.
 import EventSource from '../view/event/EventSource.js';
 import type { AbstractGraph } from './AbstractGraph.js';
 import type Cell from './cell/Cell.js';
-import SelectionChange from './undoable_changes/SelectionChange.js';
-import UndoableEdit from './undoable_changes/UndoableEdit.js';
+import SelectionChange from './undoable-change/SelectionChange.js';
+import UndoableEdit from './undoable-change/UndoableEdit.js';
 import EventObject from './event/EventObject.js';
 import InternalEvent from './event/InternalEvent.js';
 import { isI18nEnabled } from '../internal/i18n-utils.js';

diff --git a/packages/core/src/view/GraphView.ts b/packages/core/src/view/GraphView.ts
@@ -32,22 +32,22 @@ import {
   toRadians,
 } from '../util/mathUtils.js';
 import CellState from './cell/CellState.js';
-import UndoableEdit from './undoable_changes/UndoableEdit.js';
+import UndoableEdit from './undoable-change/UndoableEdit.js';
 import ImageShape from './shape/node/ImageShape.js';
 import InternalMouseEvent from './event/InternalMouseEvent.js';
 import Cell from './cell/Cell.js';
 import Image from './image/ImageBox.js';
-import CurrentRootChange from './undoable_changes/CurrentRootChange.js';
+import CurrentRootChange from './undoable-change/CurrentRootChange.js';
 import Shape from './shape/Shape.js';
 import Geometry from './geometry/Geometry.js';
 import ConnectionConstraint from './other/ConnectionConstraint.js';
-import type PopupMenuHandler from './plugins/PopupMenuHandler.js';
+import type PopupMenuHandler from './plugin/PopupMenuHandler.js';
 import { getClientX, getClientY, getSource, isConsumed } from '../util/EventUtils.js';
 import { clone } from '../util/cloneUtils.js';
 import type { AbstractGraph } from './AbstractGraph.js';
 import { EdgeStyleRegistry } from './style/edge/EdgeStyleRegistry.js';
 import { PerimeterRegistry } from './style/perimeter/PerimeterRegistry.js';
-import type TooltipHandler from './plugins/TooltipHandler.js';
+import type TooltipHandler from './plugin/TooltipHandler.js';
 import type { EdgeStyleFunction, MouseEventListener } from '../types.js';
 import { doEval, log } from '../internal/utils.js';
 import { isI18nEnabled } from '../internal/i18n-utils.js';

diff --git a/packages/core/src/view/animate/Effects.ts b/packages/core/src/view/animate/Effects.ts
@@ -17,11 +17,11 @@ limitations under the License.
 */
 
 import { setOpacity } from '../../util/styleUtils.js';
-import GeometryChange from '../undoable_changes/GeometryChange.js';
-import TerminalChange from '../undoable_changes/TerminalChange.js';
-import ValueChange from '../undoable_changes/ValueChange.js';
-import ChildChange from '../undoable_changes/ChildChange.js';
-import StyleChange from '../undoable_changes/StyleChange.js';
+import GeometryChange from '../undoable-change/GeometryChange.js';
+import TerminalChange from '../undoable-change/TerminalChange.js';
+import ValueChange from '../undoable-change/ValueChange.js';
+import ChildChange from '../undoable-change/ChildChange.js';
+import StyleChange from '../undoable-change/StyleChange.js';
 import type { AbstractGraph } from '../AbstractGraph.js';
 import type Cell from '../../view/cell/Cell.js';
 import { UndoableChange } from '../../types.js';

diff --git a/packages/core/src/view/cell/CellRenderer.ts b/packages/core/src/view/cell/CellRenderer.ts
@@ -39,7 +39,7 @@ import CellOverlay from './CellOverlay.js';
 import { getClientX, getClientY, getSource } from '../../util/EventUtils.js';
 import { isNode } from '../../util/domUtils.js';
 import type { CellStateStyle, ShapeConstructor } from '../../types.js';
-import type SelectionCellsHandler from '../plugins/SelectionCellsHandler.js';
+import type SelectionCellsHandler from '../plugin/SelectionCellsHandler.js';
 import { StyleDefaultsConfig } from '../../util/config.js';
 
 const placeholderStyleValues = ['inherit', 'swimlane', 'indicated'];

diff --git a/packages/core/src/view/handler/EdgeHandler.ts b/packages/core/src/view/handler/EdgeHandler.ts
@@ -64,7 +64,7 @@ import InternalMouseEvent from '../event/InternalMouseEvent.js';
 import Cell from '../cell/Cell.js';
 import ImageBox from '../image/ImageBox.js';
 import EventSource from '../event/EventSource.js';
-import type SelectionHandler from '../plugins/SelectionHandler.js';
+import type SelectionHandler from '../plugin/SelectionHandler.js';
 import { equalPoints } from '../../util/arrayUtils.js';
 import { EdgeHandlerConfig, HandleConfig } from './config.js';
 

diff --git a/packages/core/src/view/handler/KeyHandler.ts b/packages/core/src/view/handler/KeyHandler.ts
@@ -26,7 +26,7 @@ import {
   isControlDown as _isControlDown,
   isShiftDown,
 } from '../../util/EventUtils.js';
-import type CellEditorHandler from '../plugins/CellEditorHandler.js';
+import type CellEditorHandler from '../plugin/CellEditorHandler.js';
 
 /**
  * Event handler that listens to keystroke events.

diff --git a/packages/core/src/view/handler/VertexHandler.ts b/packages/core/src/view/handler/VertexHandler.ts
@@ -35,8 +35,8 @@ import Shape from '../shape/Shape.js';
 import InternalMouseEvent from '../event/InternalMouseEvent.js';
 import EdgeHandler from './EdgeHandler.js';
 import EventSource from '../event/EventSource.js';
-import type SelectionHandler from '../plugins/SelectionHandler.js';
-import type SelectionCellsHandler from '../plugins/SelectionCellsHandler.js';
+import type SelectionHandler from '../plugin/SelectionHandler.js';
+import type SelectionCellsHandler from '../plugin/SelectionCellsHandler.js';
 import { HandleConfig, VertexHandlerConfig } from './config.js';
 import { isNullish } from '../../internal/utils.js';