mermaid-js/mermaid
Oct 2024 – Sep 2025
9 Months active
Languages Used
CSSHTMLJavaScriptMarkdownTypeScriptYAMLJSON
Technical Skills
CSSCode RefactoringDiagrammingDiagramming LibrariesDocumentationEnd-to-end testing
Knut Sveidqvist
PROFILE
Knut Sveidqvist
Knut Sveidqvist contributed to the mermaid-js/mermaid repository by engineering advanced diagram rendering features and improving layout algorithms for flowcharts, mindmaps, treemaps, and Kanban diagrams. He integrated technologies such as JavaScript, TypeScript, and SVG rendering to enhance edge accuracy, node intersections, and layout configurability, supporting both ELK and tidy-tree engines. His work included parser and grammar improvements, accessibility enhancements, and robust end-to-end testing with Cypress. By refactoring code, stabilizing test suites, and updating documentation, Knut addressed rendering correctness, maintainability, and user experience, delivering scalable, reliable visualizations and enabling faster iteration for both users and contributors.
Overall Statistics
Feature vs Bugs
71%Features
Repository Contributions
82Total
Bugs
8
Commits
82
Features
20
Lines of code
19,566
Activity Months9
Your Network
61 people
Work History
September 2025
7 Commits • 1 Features
Sep 1, 2025September 2025 monthly summary for mermaid-js/mermaid focusing on delivering robust ELK-based layout rendering and stabilized mindmap rendering, with measurable improvements in diagram correctness and reliability.
7 Commits • 1 Features
Sep 1, 2025September 2025 monthly summary for mermaid-js/mermaid focusing on delivering robust ELK-based layout rendering and stabilized mindmap rendering, with measurable improvements in diagram correctness and reliability.
September 2025
August 2025
5 Commits • 2 Features
Aug 1, 2025August 2025: Mermaid repository update focused on rendering accuracy, layout flexibility, and maintenance hygiene. Delivered notable diagram rendering enhancements, including fixing sequence diagram parser precedence to correctly handle actor/config definitions, adding ELK and tidy-tree layouts with new layout loaders, and exposing ELK layout configuration options for user control over node/edge ordering. Completed maintenance work to keep dependencies current by updating the lock file and removing obsolete docs to streamline tooling. These changes improve rendering accuracy, provide broader layout choices, and reduce technical debt, enabling faster iteration and better user experience in downstream products.
August 2025
5 Commits • 2 Features
Aug 1, 2025August 2025: Mermaid repository update focused on rendering accuracy, layout flexibility, and maintenance hygiene. Delivered notable diagram rendering enhancements, including fixing sequence diagram parser precedence to correctly handle actor/config definitions, adding ELK and tidy-tree layouts with new layout loaders, and exposing ELK layout configuration options for user control over node/edge ordering. Completed maintenance work to keep dependencies current by updating the lock file and removing obsolete docs to streamline tooling. These changes improve rendering accuracy, provide broader layout choices, and reduce technical debt, enabling faster iteration and better user experience in downstream products.
June 2025
11 Commits • 3 Features
Jun 1, 2025June 2025 monthly summary for mermaid-js/mermaid: Key features delivered include Mindmap Rendering Enhancements with support for multiple layout algorithms (COSE-Bilkent and tidy-tree) and improved mindmap data processing; Tidy-Tree Layout Engine introduced and stabilized as the primary option for tree-like diagrams with orientation handling and edge positioning; Mermaid Rendering Edge and Diagram Improvements for improved edge accuracy, node intersections, arrowheads, and overall diagram fidelity. Major bugs fixed include Elk layout stability with deterministic node ordering and rollback of a wrapping strategy to fix unintended layout issues. Overall impact: increased diagram accuracy, reliability, and rendering performance, enabling scalable, predictable visuals and a better user experience. Technologies/skills demonstrated: graph/layout algorithm design and integration (COSE-Bilkent, tidy-tree), rendering pipeline refinements, Elk layout kernel stability, deterministic layout strategies, and targeted refactoring for layout reliability. Representative commits include f2eef3759919d4f500b4165724b7c2e698ed3662, 34027bc58946e5e4110bbf5d31fee27a4fea2461, f0445b74d17106509b681f7c521c00a24a081e19, eadb343292494afb59a768f218b113b45b703113, d2463f41b52feaaa287471f43952696ffb496e61, c13ce2a5c0772ab04ab7c7434f5d6a3d49b54534, ba52eef2579374a18e1e27d4a60a50f43ad92f7b, c7f2f609a9253bcf8e71d2e080009898f737f53b, 85c5b9b4c064e2edabf21757c8215a1018d4d288, e682172823d029b8e15051fdca6cc3c30c6af3f6
11 Commits • 3 Features
Jun 1, 2025June 2025 monthly summary for mermaid-js/mermaid: Key features delivered include Mindmap Rendering Enhancements with support for multiple layout algorithms (COSE-Bilkent and tidy-tree) and improved mindmap data processing; Tidy-Tree Layout Engine introduced and stabilized as the primary option for tree-like diagrams with orientation handling and edge positioning; Mermaid Rendering Edge and Diagram Improvements for improved edge accuracy, node intersections, arrowheads, and overall diagram fidelity. Major bugs fixed include Elk layout stability with deterministic node ordering and rollback of a wrapping strategy to fix unintended layout issues. Overall impact: increased diagram accuracy, reliability, and rendering performance, enabling scalable, predictable visuals and a better user experience. Technologies/skills demonstrated: graph/layout algorithm design and integration (COSE-Bilkent, tidy-tree), rendering pipeline refinements, Elk layout kernel stability, deterministic layout strategies, and targeted refactoring for layout reliability. Representative commits include f2eef3759919d4f500b4165724b7c2e698ed3662, 34027bc58946e5e4110bbf5d31fee27a4fea2461, f0445b74d17106509b681f7c521c00a24a081e19, eadb343292494afb59a768f218b113b45b703113, d2463f41b52feaaa287471f43952696ffb496e61, c13ce2a5c0772ab04ab7c7434f5d6a3d49b54534, ba52eef2579374a18e1e27d4a60a50f43ad92f7b, c7f2f609a9253bcf8e71d2e080009898f737f53b, 85c5b9b4c064e2edabf21757c8215a1018d4d288, e682172823d029b8e15051fdca6cc3c30c6af3f6
June 2025
May 2025
23 Commits • 8 Features
May 1, 2025May 2025 focused on delivering treemap enhancements in mermaid, stabilizing the test suite, and strengthening release readiness, accessibility, and code quality. Key work includes Treemap Rendering Enhancements with valueFormat support, layout and hierarchy updates, docs, linting, and visual tests; Grammar Class Support to improve parsing; and accessibility/title support plus padding configuration to improve UX. Additional improvements covered test stabilization, code quality fixes, dependency lockfile updates, and rendering fixes moving treemap toward a production-ready beta.
May 2025
23 Commits • 8 Features
May 1, 2025May 2025 focused on delivering treemap enhancements in mermaid, stabilizing the test suite, and strengthening release readiness, accessibility, and code quality. Key work includes Treemap Rendering Enhancements with valueFormat support, layout and hierarchy updates, docs, linting, and visual tests; Grammar Class Support to improve parsing; and accessibility/title support plus padding configuration to improve UX. Additional improvements covered test stabilization, code quality fixes, dependency lockfile updates, and rendering fixes moving treemap toward a production-ready beta.
March 2025
3 Commits • 1 Features
Mar 1, 2025March 2025 performance summary for mermaid-js/mermaid: Delivered a feature to enhance edge marker rendering and color synchronization, including applying edge stroke color to arrow heads, introducing a per-arrow-type fill property to support conditional filling, and ensuring arrowhead color matches the edge color. Added test coverage for edge marker rendering and updated the changeset to align arrow colors with edge colors. No critical defects reported; improvements emphasize visual consistency and maintainability. Technologies demonstrated: front-end SVG rendering, JavaScript/TypeScript, testing (unit/integration), changesets, and cross-repo color semantics.
3 Commits • 1 Features
Mar 1, 2025March 2025 performance summary for mermaid-js/mermaid: Delivered a feature to enhance edge marker rendering and color synchronization, including applying edge stroke color to arrow heads, introducing a per-arrow-type fill property to support conditional filling, and ensuring arrowhead color matches the edge color. Added test coverage for edge marker rendering and updated the changeset to align arrow colors with edge colors. No critical defects reported; improvements emphasize visual consistency and maintainability. Technologies demonstrated: front-end SVG rendering, JavaScript/TypeScript, testing (unit/integration), changesets, and cross-repo color semantics.
March 2025
January 2025
3 Commits • 1 Features
Jan 1, 2025January 2025 summary for mermaid-js/mermaid focused on feature enhancement and reliability improvements in diagram rendering. Delivered a user-facing feature to allow '@' in Mermaid node labels with accompanying documentation fix for issue #6195, and hardened the diagram link ID parsing to prevent quotes and restrict certain characters when not delimited, supported by test updates. Overall, these changes improve labeling flexibility, parsing reliability, and reduce potential diagram rendering issues for users and downstream tools.
January 2025
3 Commits • 1 Features
Jan 1, 2025January 2025 summary for mermaid-js/mermaid focused on feature enhancement and reliability improvements in diagram rendering. Delivered a user-facing feature to allow '@' in Mermaid node labels with accompanying documentation fix for issue #6195, and hardened the diagram link ID parsing to prevent quotes and restrict certain characters when not delimited, supported by test updates. Overall, these changes improve labeling flexibility, parsing reliability, and reduce potential diagram rendering issues for users and downstream tools.
December 2024
4 Commits • 1 Features
Dec 1, 2024December 2024 monthly summary for mermaid-js/mermaid: Implemented edge IDs and edge animation support for Mermaid flowcharts, including parsing, TypeScript typings, and documentation; fixed a flowchart edge styling bug to ensure edge fills render correctly; performed TypeScript fixes and added a changeset to improve maintainability and release tracking. This work enhances graph interactivity, rendering fidelity, and developer experience, driving clearer visualizations and smoother workflow automation.
4 Commits • 1 Features
Dec 1, 2024December 2024 monthly summary for mermaid-js/mermaid: Implemented edge IDs and edge animation support for Mermaid flowcharts, including parsing, TypeScript typings, and documentation; fixed a flowchart edge styling bug to ensure edge fills render correctly; performed TypeScript fixes and added a changeset to improve maintainability and release tracking. This work enhances graph interactivity, rendering fidelity, and developer experience, driving clearer visualizations and smoother workflow automation.
December 2024
November 2024
15 Commits • 1 Features
Nov 1, 2024November 2024 (2024-11) performance summary for mermaid repo. Key rendering stability and correctness improvements across diagrams, with a focus on business value such as reliable diagram rendering and improved developer velocity through tests and clearer changesets.
November 2024
15 Commits • 1 Features
Nov 1, 2024November 2024 (2024-11) performance summary for mermaid repo. Key rendering stability and correctness improvements across diagrams, with a focus on business value such as reliable diagram rendering and improved developer velocity through tests and clearer changesets.
October 2024
11 Commits • 2 Features
Oct 1, 2024Monthly performance summary for 2024-10 focused on delivering high-value features in mermaid and strengthening QA/docs. Notable improvements in Kanban rendering, theming, and label/icon handling, accompanied by broader testing and documentation updates.
11 Commits • 2 Features
Oct 1, 2024Monthly performance summary for 2024-10 focused on delivering high-value features in mermaid and strengthening QA/docs. Notable improvements in Kanban rendering, theming, and label/icon handling, accompanied by broader testing and documentation updates.
October 2024
Activity
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Quality Metrics
Correctness88.2%
Maintainability87.0%
Architecture83.4%
Performance77.4%
AI Usage22.2%
Skills & Technologies
Programming Languages
CSSHTMLJSONJavaScriptMarkdownTypeScriptYAML
Technical Skills
AlgorithmsBug FixBug FixingCSSCSS AnimationsChangelog ManagementCode DocumentationCode FormattingCode ParsingCode RefactoringConfigurationConfiguration ManagementCypressCytoscape.jsD3.js
Repositories Contributed To
Overview of all repositories you've contributed to across your timeline