Automattic/gutenberg
Dec 2024 – Oct 2025
11 Months active
Languages Used
JavaScriptMarkdownPHPCSSSCSSTypeScriptYAML
Technical Skills
Front End DevelopmentJavaScriptReactWordPress DevelopmentDocumentationGutenberg Block Development
tomoki shimomura
PROFILE
Tomoki Shimomura
Over eleven months, Shimotmk1104 contributed to the Automattic/gutenberg repository, building and refining WordPress block editor features with a focus on UI consistency, maintainability, and user experience. They engineered enhancements such as unified ToolsPanel UIs, improved block settings, and robust typography handling, while also addressing bugs in image resolution resets and style attribute application. Their technical approach combined React, JavaScript, and CSS Grid to modernize components, streamline code, and ensure backward compatibility. By refactoring workflows, updating documentation, and cleaning up legacy code, Shimotmk1104 delivered solutions that improved both developer onboarding and the reliability of the Gutenberg editing experience.
Overall Statistics
Feature vs Bugs
61%Features
Repository Contributions
44Total
Bugs
13
Commits
44
Features
20
Lines of code
1,704
Activity Months11
Work History
October 2025
6 Commits • 1 Features
Oct 1, 2025October 2025 highlights: Delivered user-facing Accordion Block enhancements, hardened block metadata handling, and improved data integrity with safer, backward-compatible changes. The work strengthens shareability, content safety, and upgrade stability while showcasing robust Gutenberg development patterns.
6 Commits • 1 Features
Oct 1, 2025October 2025 highlights: Delivered user-facing Accordion Block enhancements, hardened block metadata handling, and improved data integrity with safer, backward-compatible changes. The work strengthens shareability, content safety, and upgrade stability while showcasing robust Gutenberg development patterns.
October 2025
September 2025
3 Commits • 2 Features
Sep 1, 2025September 2025 monthly summary for Automattic/gutenberg. Focused on UI consistency, accurate style preset application, and code quality improvements. Key deliveries included: (1) Group Block Variations UI Consistency to standardize presentation by removing variation-specific text styling from example paragraphs, achieving a uniform base look; (2) Search Block border-radius presets fixed to apply correctly when the search button is inside the input, ensuring per-corner radii and overall radius respect presets; (3) Code quality improvement by trimming spaces in inline styles for social icons to enhance readability and potentially reduce CSS size. Overall impact: improved UI predictability across themes, easier maintenance, tighter alignment with the design system, and reduced risk of style drift. Demonstrated technologies/skills: Gutenberg block editor development, React-based UI, CSS/inline style refactoring, and focused code quality practices.
September 2025
3 Commits • 2 Features
Sep 1, 2025September 2025 monthly summary for Automattic/gutenberg. Focused on UI consistency, accurate style preset application, and code quality improvements. Key deliveries included: (1) Group Block Variations UI Consistency to standardize presentation by removing variation-specific text styling from example paragraphs, achieving a uniform base look; (2) Search Block border-radius presets fixed to apply correctly when the search button is inside the input, ensuring per-corner radii and overall radius respect presets; (3) Code quality improvement by trimming spaces in inline styles for social icons to enhance readability and potentially reduce CSS size. Overall impact: improved UI predictability across themes, easier maintenance, tighter alignment with the design system, and reduced risk of style drift. Demonstrated technologies/skills: Gutenberg block editor development, React-based UI, CSS/inline style refactoring, and focused code quality practices.
August 2025
2 Commits • 1 Features
Aug 1, 2025August 2025 Monthly Summary: Gutenberg repo contributions focused on stabilizing editor behavior and improving navigation UX. Delivered a bug fix for duotone attributes and a UI refactor for the calendar navigator, aligning with performance and UX goals.
2 Commits • 1 Features
Aug 1, 2025August 2025 Monthly Summary: Gutenberg repo contributions focused on stabilizing editor behavior and improving navigation UX. Delivered a bug fix for duotone attributes and a UI refactor for the calendar navigator, aligning with performance and UX goals.
August 2025
July 2025
5 Commits • 1 Features
Jul 1, 2025Monthly summary for 2025-07 highlighting key developer accomplishments for the Automattic/gutenberg repository, with a focus on business value, reliability, and maintainability.
July 2025
5 Commits • 1 Features
Jul 1, 2025Monthly summary for 2025-07 highlighting key developer accomplishments for the Automattic/gutenberg repository, with a focus on business value, reliability, and maintainability.
June 2025
5 Commits • 3 Features
Jun 1, 2025June 2025 performance summary for Automattic/gutenberg. Focused on stabilizing the editor experience, reducing technical debt, and improving contributor documentation. Delivered targeted bug fixes, structural refactors, and documentation polish that collectively enhance UX, maintainability, and onboarding for maintainers and contributors.
5 Commits • 3 Features
Jun 1, 2025June 2025 performance summary for Automattic/gutenberg. Focused on stabilizing the editor experience, reducing technical debt, and improving contributor documentation. Delivered targeted bug fixes, structural refactors, and documentation polish that collectively enhance UX, maintainability, and onboarding for maintainers and contributors.
June 2025
May 2025
6 Commits • 3 Features
May 1, 2025For 2025-05 (Automattic/gutenberg), delivered feature-focused enhancements and documentation improvements with no explicit major bug fixes reported. Key features delivered: 1) Unified ToolsPanel UI for Block Settings across File Block, Comment Author Name Block, List Block, and Embed Block. Commits include 16fe2353e818d211d5b72a640ced17a15b642753, a5d288757fed0b0eb2f1a542bcf6203f7aae2d4d, 25d9b97548730a25d19ed600d147d97e79dd243d, and 5d41556d61f2851ca6c77b0ce45df17dc210c061. 2) Spinner Component Documentation Enhancement: updated spinner example to JSX usage for clearer documentation. Commit: de9d8bf200d7a2b9c6bdfc4108c46147da5124bc. 3) Workflow Configuration Readability Cleanup: reformatted GitHub Actions workflow YAML files to improve readability without altering functionality. Commit: d12e4ccf7e7dd9e4b78082be3cae732cd013e5b4. Overall impact: improved UX consistency across blocks, easier maintenance, and clearer CI/CD configuration, enabling faster feature iteration and better developer onboarding. Technologies/skills demonstrated: React component refactoring and ToolsPanel integration, JSX-based documentation, YAML workflow formatting, and documentation practices.
May 2025
6 Commits • 3 Features
May 1, 2025For 2025-05 (Automattic/gutenberg), delivered feature-focused enhancements and documentation improvements with no explicit major bug fixes reported. Key features delivered: 1) Unified ToolsPanel UI for Block Settings across File Block, Comment Author Name Block, List Block, and Embed Block. Commits include 16fe2353e818d211d5b72a640ced17a15b642753, a5d288757fed0b0eb2f1a542bcf6203f7aae2d4d, 25d9b97548730a25d19ed600d147d97e79dd243d, and 5d41556d61f2851ca6c77b0ce45df17dc210c061. 2) Spinner Component Documentation Enhancement: updated spinner example to JSX usage for clearer documentation. Commit: de9d8bf200d7a2b9c6bdfc4108c46147da5124bc. 3) Workflow Configuration Readability Cleanup: reformatted GitHub Actions workflow YAML files to improve readability without altering functionality. Commit: d12e4ccf7e7dd9e4b78082be3cae732cd013e5b4. Overall impact: improved UX consistency across blocks, easier maintenance, and clearer CI/CD configuration, enabling faster feature iteration and better developer onboarding. Technologies/skills demonstrated: React component refactoring and ToolsPanel integration, JSX-based documentation, YAML workflow formatting, and documentation practices.
April 2025
2 Commits • 1 Features
Apr 1, 2025April 2025: Delivered targeted fixes and documentation updates for Gutenberg in Automattic/gutenberg, focusing on UI consistency, bug prevention, and alignment with product decisions. Strengthened maintainability through clearer code patterns and centralized design decisions.
2 Commits • 1 Features
Apr 1, 2025April 2025: Delivered targeted fixes and documentation updates for Gutenberg in Automattic/gutenberg, focusing on UI consistency, bug prevention, and alignment with product decisions. Strengthened maintainability through clearer code patterns and centralized design decisions.
April 2025
March 2025
4 Commits • 3 Features
Mar 1, 2025March 2025 monthly summary for Automattic/gutenberg highlighting key feature delivery, bug fixes, and overall impact. Focused on editor UX improvements, UI consistency, and maintainability enhancements that deliver measurable business value and improved developer experience.
March 2025
4 Commits • 3 Features
Mar 1, 2025March 2025 monthly summary for Automattic/gutenberg highlighting key feature delivery, bug fixes, and overall impact. Focused on editor UX improvements, UI consistency, and maintainability enhancements that deliver measurable business value and improved developer experience.
February 2025
5 Commits • 1 Features
Feb 1, 2025February 2025 — Focus on UI reliability, accessibility, and expanded formatting options in Gutenberg. Delivered critical bug fixes for the Format Library UI and shadow controls, and introduced non-interactive formatting for post navigation links, boosting developer velocity and end-user styling capabilities. Reduced UI errors, improved accessibility, and laid groundwork for broader formatting features.
5 Commits • 1 Features
Feb 1, 2025February 2025 — Focus on UI reliability, accessibility, and expanded formatting options in Gutenberg. Delivered critical bug fixes for the Format Library UI and shadow controls, and introduced non-interactive formatting for post navigation links, boosting developer velocity and end-user styling capabilities. Reduced UI errors, improved accessibility, and laid groundwork for broader formatting features.
February 2025
January 2025
5 Commits • 4 Features
Jan 1, 2025January 2025 — Monthly highlights for Automattic/gutenberg. Delivered user-focused customization enhancements, usability improvements, and targeted code-quality fixes across multiple blocks. The work enhances end-user styling flexibility, maintains consistency with other blocks, and improves developer experience through cleaner HTML generation and better documentation. Key outcomes include a clearable color picker for the Social Links Block, documented heading color customization for the Post Content Block, expanded non-interactive formatting in the Home Link Block, a placeholder attribute for the Details block's summary, and a refactor of CSS class generation in the Navigation Submenu Block to a cleaner, array-based approach that eliminates trailing spaces.
January 2025
5 Commits • 4 Features
Jan 1, 2025January 2025 — Monthly highlights for Automattic/gutenberg. Delivered user-focused customization enhancements, usability improvements, and targeted code-quality fixes across multiple blocks. The work enhances end-user styling flexibility, maintains consistency with other blocks, and improves developer experience through cleaner HTML generation and better documentation. Key outcomes include a clearable color picker for the Social Links Block, documented heading color customization for the Post Content Block, expanded non-interactive formatting in the Home Link Block, a placeholder attribute for the Details block's summary, and a refactor of CSS class generation in the Navigation Submenu Block to a cleaner, array-based approach that eliminates trailing spaces.
December 2024
1 Commits
Dec 1, 2024December 2024: Delivered a critical typography inheritance fix for the Button block in Gutenberg. Fixed inner elements to inherit typography correctly across edit and save flows, updating block editor hooks, deprecated-version handling, and relevant Button block components to ensure consistent typography attributes. The change aligns with the #68023 request and was implemented via commit e5dca5461c0699b4ed902bbea375e40b0d2f803c.
1 Commits
Dec 1, 2024December 2024: Delivered a critical typography inheritance fix for the Button block in Gutenberg. Fixed inner elements to inherit typography correctly across edit and save flows, updating block editor hooks, deprecated-version handling, and relevant Button block components to ensure consistent typography attributes. The change aligns with the #68023 request and was implemented via commit e5dca5461c0699b4ed902bbea375e40b0d2f803c.
December 2024
Activity
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Quality Metrics
Correctness94.8%
Maintainability94.0%
Architecture90.2%
Performance91.8%
AI Usage20.0%
Skills & Technologies
Programming Languages
CSSJavaScriptMarkdownPHPSCSSTypeScriptYAML
Technical Skills
Block Editor DevelopmentCI/CDCSSCSS GridComponent DevelopmentComponent Library DevelopmentDocumentationFront End DevelopmentFront-end DevelopmentFrontend DevelopmentGitHub ActionsGutenberg Block DevelopmentJavaScriptPlugin DevelopmentReact
Repositories Contributed To
Overview of all repositories you've contributed to across your timeline