mermaid-js/mermaid
Oct 2024 – Mar 2026
13 Months active
Languages Used
CSSHTMLJavaScriptMarkdownTypeScriptYAMLJSONplaintext
Technical Skills
CSSCode RefactoringDiagrammingDiagramming LibrariesDocumentationEnd-to-end testing
Knut Sveidqvist
PROFILE
Knut Sveidqvist
Knut Sveidqvist contributed to the mermaid-js/mermaid repository over 13 months, delivering 28 features and resolving 11 bugs focused on diagram rendering, layout algorithms, and documentation. He enhanced diagram types such as flowcharts, mindmaps, treemaps, and block diagrams by integrating layout engines like ELK and tidy-tree, improving rendering fidelity and configurability. Using TypeScript, JavaScript, and CSS, Knut refactored core rendering pipelines, stabilized test suites with Cypress and Playwright, and improved accessibility and SEO in documentation. His work addressed parsing reliability, edge rendering accuracy, and repository hygiene, demonstrating depth in frontend engineering and maintainable open-source development practices.
Overall Statistics
Feature vs Bugs
72%Features
Repository Contributions
110Total
Bugs
11
Commits
110
Features
28
Lines of code
29,407
Activity Months13
Your Network
91 peopleShared Repositories
91
Work History
March 2026
14 Commits • 4 Features
Mar 1, 2026March 2026 monthly summary for mermaid-js/mermaid: Delivered robust diagram rendering improvements for complex block diagrams, strengthened testing tooling, and dev-environment refinements, driving reliability, accessibility, and developer velocity. Key work included end-to-end tests for block diagrams, UI and dark-theme readability enhancements, expanded parsing support for state diagrams, Playwright-based visual verification tooling, and per-worktree dev-server setup with lockfile hygiene.
14 Commits • 4 Features
Mar 1, 2026March 2026 monthly summary for mermaid-js/mermaid: Delivered robust diagram rendering improvements for complex block diagrams, strengthened testing tooling, and dev-environment refinements, driving reliability, accessibility, and developer velocity. Key work included end-to-end tests for block diagrams, UI and dark-theme readability enhancements, expanded parsing support for state diagrams, Playwright-based visual verification tooling, and per-worktree dev-server setup with lockfile hygiene.
March 2026
February 2026
9 Commits • 2 Features
Feb 1, 2026February 2026 – Mermaid repo (mermaid-js/mermaid): Delivered stability and rendering fidelity improvements across architecture diagrams, git graph, and flowcharts, along with documentation and repository hygiene updates. Focused on business value and technical precision: reducing crashes, ensuring correct rendering paths, expanding test coverage, and clarifying configuration migration.
February 2026
9 Commits • 2 Features
Feb 1, 2026February 2026 – Mermaid repo (mermaid-js/mermaid): Delivered stability and rendering fidelity improvements across architecture diagrams, git graph, and flowcharts, along with documentation and repository hygiene updates. Focused on business value and technical precision: reducing crashes, ensuring correct rendering paths, expanding test coverage, and clarifying configuration migration.
January 2026
4 Commits • 1 Features
Jan 1, 2026Concise monthly summary for 2026-01 focusing on documentation site navigation and SEO enhancements for mermaid project, including routing fixes, logo behavior, and homepage SEO improvements.
4 Commits • 1 Features
Jan 1, 2026Concise monthly summary for 2026-01 focusing on documentation site navigation and SEO enhancements for mermaid project, including routing fixes, logo behavior, and homepage SEO improvements.
January 2026
December 2025
1 Commits • 1 Features
Dec 1, 2025December 2025: Focused on standardizing documentation canonical URLs to the new domain mermaid.ai/open-source in mermaid-js/mermaid. This involved removing legacy canonical mappings and updating docs to ensure consistent, SEO-friendly canonical references, reducing future maintenance and migration risk. No major bugs fixed this month; the work enhances documentation discoverability and stability for users and contributors.
December 2025
1 Commits • 1 Features
Dec 1, 2025December 2025: Focused on standardizing documentation canonical URLs to the new domain mermaid.ai/open-source in mermaid-js/mermaid. This involved removing legacy canonical mappings and updating docs to ensure consistent, SEO-friendly canonical references, reducing future maintenance and migration risk. No major bugs fixed this month; the work enhances documentation discoverability and stability for users and contributors.
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
Loading activity data...
Quality Metrics
Correctness91.2%
Maintainability87.6%
Architecture85.4%
Performance80.4%
AI Usage27.0%
Skills & Technologies
Programming Languages
CSSHTMLJSONJavaScriptMarkdownTypeScriptYAMLplaintext
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