Weekly GitHub Report for Mermaid: October 20, 2025 - October 27, 2025 (12:03:35)
Weekly GitHub Report for Mermaid
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Table of Contents
I. News
1.1 Recent Version Releases:
The current version of this repository is @mermaid-js/parser@0.4.0
1.2 Version Information:
On March 25, 2025, a minor update was released introducing a new Radar Chart feature, enhancing the charting capabilities of the platform. This addition reflects ongoing efforts to expand visualization options.
II. Issues
2.1 Top 5 Active Issues:
We consider active issues to be issues that that have been commented on most frequently within the last week. Bot comments are omitted.
As of our latest update, there are no active issues with ongoing comments this week.
2.2 Top 5 Stale Issues:
We consider stale issues to be issues that has had no activity within the last 30 days. The team should work together to get these issues resolved and closed as soon as possible.
- Tooltips for emoji in Diagram Syntax doc tree: This issue addresses the lack of explanatory tooltips for emoji used next to diagram type names in the "Diagram Syntax" section of the documentation. The proposal suggests adding tooltips to these emoji to help users understand the meaning and information conveyed by each icon, improving overall clarity and usability.
- log scale for
xychart-beta: This issue proposes adding ascalestring field to thexychart-betacomponent that defaults tolinearbut can also acceptlogas an option, enabling logarithmic scaling of charts. This enhancement aims to allow users to maintain graph descriptions with true, non-logged values while plotting the data on a logarithmic scale, with potential for future extension to other scale types. - Unable to Style Sequence Diagram Title: This issue reports a problem with the inability to style the title font size in sequence diagrams created using Mermaid, where the user currently resorts to using a Markdown title as a workaround. The user notes that while other diagram types in Mermaid, such as QuadrantChartConfig, support title styling attributes, this functionality is not yet available for sequence diagrams, leading to very small and unreadable titles.
- SVG rendering formatting issues with markdown input: This issue addresses problems with SVG rendering when nodes in a diagram use markdown formatting, resulting in inconsistent visual output such as added height or text being cut off in the SVG files. Specifically, these formatting issues occur when opening the SVG in a new tab or downloading it from the editor, causing discrepancies between the expected and actual appearance of the diagram nodes.
- Vite build error with mermaid version 10.9.0: This issue describes a build error encountered when using Mermaid version 10.9.0 in a Vue 3 and Vite application. While the Mermaid graphs render correctly during development, the application fails to start after building, producing a "TypeError: Cannot set properties of undefined (setting 'prototype')" related to Mermaid's API initialization.
2.3 Open Issues
This section lists, groups, and then summarizes issues that were created within the last week in the repository.
Issues Opened This Week: 5
Summarized Issues:
- Build and bundling failures: The Mermaid parser causes build failures in Next.js 15 client components by pulling in Langium's deep imports of private
vscode-jsonrpcinternals, which modern bundlers like Webpack 5 and Turbopack cannot resolve. This results in missing modules and exports during the bundling process, preventing successful builds. - issues/7094
- Diagram rendering and syntax issues: Mermaid diagrams face rendering problems such as the live editor not correctly displaying Gantt charts when a comma follows a task ID, causing the diagram to gray out. Additionally, there are attempts to reduce padding around text in flowchart nodes, but current settings and CSS hacks either have limited effect or cause visual issues.
- issues/7095, issues/7102, issues/7102
- Iframe sandbox attribute limitations: Setting the sandbox attribute on an iframe after it has been appended to the DOM does not activate sandboxing because browsers initialize the iframe’s browsing context immediately upon insertion, ignoring subsequent sandbox attribute changes for security reasons. This behavior limits dynamic sandboxing via D3’s .append('iframe') method.
- issues/7103
- Uncommented issue with image attachment: There is a reported problem in the Mermaid project accompanied by an image attachment, but it currently lacks any comments or further details.
- issues/7097
2.4 Closed Issues
This section lists, groups, and then summarizes issues that were closed within the last week in the repository. This section also links the associated pull requests if applicable.
Issues Closed This Week: 0
Summarized Issues:
As of our latest update, there were no issues closed in the project this week.
2.5 Issue Discussion Insights
This section will analyze the tone and sentiment of discussions within this project's open and closed issues that occurred within the past week. It aims to identify potentially heated exchanges and to maintain a constructive project environment.
Based on our analysis, there are no instances of toxic discussions in the project's open or closed issues from the past week.
III. Pull Requests
3.1 Open Pull Requests
This section provides a summary of pull requests that were opened in the repository over the past week. The top three pull requests with the highest number of commits are highlighted as 'key' pull requests. Other pull requests are grouped based on similar characteristics for easier analysis. Up to 25 pull requests are displayed in this section, while any remaining pull requests beyond this limit are omitted for brevity.
Pull Requests Opened This Week: 3
Key Open Pull Requests
1. feat: support multiple stereotypes in class diagrams: This pull request implements support for multiple stereotypes or annotations in class diagrams by extending the JISON grammar and lexer to parse consecutive annotations, updating rendering to display each stereotype on a separate line with guillemets, and adding tests to ensure correct functionality.
- URL: pull/7098
- Merged: No
2. Fix mindmap rendering issue when Level 2 nodes exceed 11: This pull request addresses and fixes a rendering issue in the Mermaid mindmap feature where Level 2 nodes beyond the 11th node were incorrectly displayed in black and disconnected from the graph.
- URL: pull/7099
- Merged: No
3. fix: Update mermaid-graphlib.js with latest changes: This pull request addresses a major regression in Mermaid v11.0.0 by updating mermaid-graphlib.js to replace clusterDb plain objects with Map instances in a for loop, thereby fixing a TypeError caused by the undefined .keys() method during rendering.
- URL: pull/7104
- Merged: No
- Associated Commits: 0d42b
3.2 Closed Pull Requests
This section provides a summary of pull requests that were closed in the repository over the past week. The top three pull requests with the highest number of commits are highlighted as 'key' pull requests. Other pull requests are grouped based on similar characteristics for easier analysis. Up to 25 pull requests are displayed in this section, while any remaining pull requests beyond this limit are omitted for brevity.
Pull Requests Closed This Week: 0
As of our latest update, there are no closed pull requests for the project this week.
3.3 Pull Request Discussion Insights
This section will analyze the tone and sentiment of discussions within this project's open and closed pull requests that occurred within the past week. It aims to identify potentially heated exchanges and to maintain a constructive project environment.
Based on our analysis, there are no instances of toxic discussions in the project's open or closed pull requests from the past week.
IV. Contributors
4.1 Contributors
Active Contributors:
We consider an active contributor in this project to be any contributor who has made at least 1 commit, opened at least 1 issue, created at least 1 pull request, or made more than 2 comments in the last month.
If there are more than 10 active contributors, the list is truncated to the top 10 based on contribution metrics for better clarity.
| Contributor | Commits | Pull Requests | Issues | Comments |
|---|---|---|---|---|
| darshanr0107 | 36 | 11 | 1 | 0 |
| jonathanpoelen | 4 | 3 | 24 | 1 |
| adarsh-naik-2004 | 16 | 1 | 0 | 0 |
| jgreywolf | 10 | 5 | 0 | 0 |
| omkarht | 6 | 1 | 0 | 1 |
| CNOCTAVE | 4 | 1 | 1 | 0 |
| ioggstream | 3 | 1 | 1 | 0 |
| naaa760 | 2 | 1 | 0 | 1 |
| abroa01 | 1 | 1 | 1 | 1 |
| SAMARTHAGARWAL77 | 2 | 1 | 0 | 0 |