Sourced from @​maxgraph/core's releases.

0.21.0

Version 0.21.0 released on 2025-07-23.

⚡ This release improves Webpack and Node.js compatibility, removes legacy code, and slightly reduces bundle size. ⚡

Resources

• npm package: @​maxgraph/core 0.21.0
• Fixed issues: milestone 0.21.0
• Documentation: maxgraph_0.21.0_website.zip
• Examples: maxgraph_0.21.0_examples.zip
• Changelog (only includes a summary and breaking changes): changelog

Breaking changes

[!IMPORTANT] These changes might require updates in your codebase if you relied on internal behaviors or legacy APIs.
See the issues and pull requests referenced below for migration help.

fit method moved to FitPlugin

The AbstractGraph.fit method and the minFitScale and maxFitScale properties have been moved to the FitPlugin.
This helps reduce the size of the base graph when the plugin is not used.

[!TIP] The fit method now accepts a single options parameter to reduce boilerplate. See #734.

Removal of Dictionary class

The Dictionary class has been removed. You can now use the native JavaScript Map object, which is available in all environments supported by maxGraph.
This class was originally introduced in mxGraph to support old browsers lacking Map.

If your code used Dictionary, replace it with Map.

[!NOTE] This change slightly reduces the bundle size. See #857.

Rounded shapes: consistent arcSize rendering

The way arcSize is computed for rounded shapes is now consistent across all shape types and matches the behavior of mxGraph.

[!IMPORTANT] If you were relying on the previous behavior (especially for edges), you may need to multiply your arcSize value by 2 to keep the same rendering.

TypeScript-specific changes

• AbstractGraph.getPlugin() now explicitly returns undefined if the plugin is not found.
  You must handle the undefined case in your code.

... (truncated)

Sourced from @​maxgraph/core's changelog.

0.21.0

Release date: 2025-07-22

For more details, see the 0.21.0 Changelog on the GitHub release page.

This release improves Webpack and Node.js compatibility, removes legacy code, and slightly reduces bundle size.

Breaking Changes:

• The AbstractGraph.fit method moved to FitPlugin, as well as the minFitScale and maxFitScale properties. The method now accepts a single parameter, mainly to minimize the need to pass many default values.
• The Dictionary class has been removed. The maxGraph API use the Map class instead, which is a standard JavaScript feature. If your code depends on the Dictionary class, you can use the Map class instead.
• The arcSize of rounded shapes was not always correctly computed in the past. The computation is now consistent everywhere in the code and matches the mxGraph behavior. To have the same rendering as before for edges, you must multiply the arcSize by 2 in your styles.
• The AbstractGraph.getPlugin method now explicitly returns undefined when a plugin is not found.
  TypeScript users must update their code to handle the undefined case when calling this method.
• The return types of some methods of EditorToolbar are now more precise.
  • addPrototype(): HTMLImageElement instead of HTMLImageElement | HTMLButtonElement
  • addCombo(): HTMLSelectElement instead of HTMLElement

• e16e84b chore(release): prepare version 0.21.0
• e3d3dfc fix: consistently compute the arcSize for edges and vertices (#884)
• 32e749a ci: display the date of the release in the release notes (#885)
• dd72497 refactor: migrate the Stylesheet story to TypeScript (#878)
• 67320e8 refactor: migrate the Thread story to TypeScript (#877)
• 7126ad2 chore(deps): bump @​easyops-cn/docusaurus-search-local from 0.51.1 to 0.52.1 (...
• 5b8dbe1 chore(deps-dev): bump the test group with 2 updates (#883)
• 1289b7b chore(deps-dev): bump the lint group with 3 updates (#880)
• 7d25b15 chore(deps-dev): bump @​swc/core from 1.12.14 to 1.13.1 (#881)
• af6c3be refactor: remove reference to legacy insert cells methods (#876)
• Additional commits viewable in compare view

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