yamada-ui/yamada-ui
Oct 2024 – Mar 2026
17 Months active
Languages Used
JavaScriptTypeScriptBashHTMLHandlebarsJSONMDXMarkdown
Technical Skills
Accessibility (a11y)Component DevelopmentFront-end DevelopmentARIAAccessibilityBuild Tools
hirotomoyamada
PROFILE
Hirotomoyamada
Hirotomo Yamada developed and maintained the yamada-ui/yamada-ui repository, delivering a robust React-based UI component library focused on accessibility, internationalization, and developer experience. Over 17 months, he engineered features such as a comprehensive theming system, advanced accessibility support, and seamless integration of Storybook and CI/CD pipelines. Yamada applied TypeScript and CSS-in-JS to ensure type safety and consistent styling, while refactoring core components for maintainability and performance. His work included implementing automated testing, optimizing build processes, and expanding documentation in multiple languages. These efforts resulted in a scalable, reliable UI platform that accelerated feature delivery and improved usability across projects.
Overall Statistics
Feature vs Bugs
75%Features
Repository Contributions
1,421Total
Bugs
210
Commits
1,421
Features
627
Lines of code
3,313,596
Activity Months17
Your Network
60 peopleSame Organization
@avap.co.jp1
Shared Repositories
59
Work History
March 2026
179 Commits • 89 Features
Mar 1, 2026March 2026 performance summary for yamada-ui/yamada-ui focused on delivering richer data visualization, strengthening accessibility, expanding test coverage, and modernizing the codebase and CI/CD processes to accelerate safe releases and improve business outcomes.
179 Commits • 89 Features
Mar 1, 2026March 2026 performance summary for yamada-ui/yamada-ui focused on delivering richer data visualization, strengthening accessibility, expanding test coverage, and modernizing the codebase and CI/CD processes to accelerate safe releases and improve business outcomes.
March 2026
February 2026
11 Commits • 3 Features
Feb 1, 2026February 2026 (2026-02) — Summary: Key features delivered include UI Library Accessibility and Usability Enhancements for yamada-ui/yamada-ui, with new icons and cleanup of unused components to improve accessibility and developer experience. Styling and Documentation Enhancements delivered updated styling capabilities and refreshed docs/changelog. Major bugs fixed include ensuring accessibility and rendering consistency by adding missing id and name props across various components. CI/Testing and Performance Improvements implemented to accelerate QA and reliability (browser-based accessibility tests, increased Node memory in CI, and a jsdom watch script). Overall impact: improved product accessibility, maintainability, and release confidence; reduced QA churn and faster iteration cycles. Technologies/skills demonstrated: accessibility engineering, UI/component design, CSS styling, documentation and changelog maintenance, CI/CD optimization, changesets workflow, and testing utilities (jsdom, browser setup).
February 2026
11 Commits • 3 Features
Feb 1, 2026February 2026 (2026-02) — Summary: Key features delivered include UI Library Accessibility and Usability Enhancements for yamada-ui/yamada-ui, with new icons and cleanup of unused components to improve accessibility and developer experience. Styling and Documentation Enhancements delivered updated styling capabilities and refreshed docs/changelog. Major bugs fixed include ensuring accessibility and rendering consistency by adding missing id and name props across various components. CI/Testing and Performance Improvements implemented to accelerate QA and reliability (browser-based accessibility tests, increased Node memory in CI, and a jsdom watch script). Overall impact: improved product accessibility, maintainability, and release confidence; reduced QA churn and faster iteration cycles. Technologies/skills demonstrated: accessibility engineering, UI/component design, CSS styling, documentation and changelog maintenance, CI/CD optimization, changesets workflow, and testing utilities (jsdom, browser setup).
December 2025
36 Commits • 13 Features
Dec 1, 2025December 2025: Strengthened repository health, shipped user-facing UI enhancements, and hardened CI/CD and accessibility foundations for yamada-ui. Focused on delivering business value through cleaner tooling, reliable test infrastructure, and polished UI/UX.
36 Commits • 13 Features
Dec 1, 2025December 2025: Strengthened repository health, shipped user-facing UI enhancements, and hardened CI/CD and accessibility foundations for yamada-ui. Focused on delivering business value through cleaner tooling, reliable test infrastructure, and polished UI/UX.
December 2025
November 2025
17 Commits • 5 Features
Nov 1, 2025November 2025 monthly summary for yamada-ui/yamada-ui focusing on delivering business value through docs, LLM integration UX, accessibility improvements, branding accuracy, and maintainable tooling. Highlights include key features delivered, major bug fixes, overall impact, and technologies demonstrated.
November 2025
17 Commits • 5 Features
Nov 1, 2025November 2025 monthly summary for yamada-ui/yamada-ui focusing on delivering business value through docs, LLM integration UX, accessibility improvements, branding accuracy, and maintainable tooling. Highlights include key features delivered, major bug fixes, overall impact, and technologies demonstrated.
October 2025
154 Commits • 56 Features
Oct 1, 2025Month 2025-10 highlights focused on delivering foundational UI capabilities, improving developer experience, and expanding localization. Key outcomes include a new Suspense component with a loading scheme for smoother async UI, refactored theming and component context to enable new capabilities, extended style-props typing for better type safety, and added absolute-center positioning in the display system. Extensive documentation updates cover color schemes, usage guides for hooks/components, and localization in Japanese, helping onboarding and global adoption. These efforts collectively improve product reliability, developer velocity, and international readiness while enabling richer UI patterns.
154 Commits • 56 Features
Oct 1, 2025Month 2025-10 highlights focused on delivering foundational UI capabilities, improving developer experience, and expanding localization. Key outcomes include a new Suspense component with a loading scheme for smoother async UI, refactored theming and component context to enable new capabilities, extended style-props typing for better type safety, and added absolute-center positioning in the display system. Extensive documentation updates cover color schemes, usage guides for hooks/components, and localization in Japanese, helping onboarding and global adoption. These efforts collectively improve product reliability, developer velocity, and international readiness while enabling richer UI patterns.
October 2025
September 2025
114 Commits • 48 Features
Sep 1, 2025September 2025 (2025-09) performance summary for yamada-ui/yamada-ui. Delivered a mix of features driving design system stability and usability, along with targeted fixes that reduce composability risk and improve developer experience. Key work focused on explicit API exports, theming and typography stability, build reliability, and accessibility/Docs improvements. The work reinforces business value by enabling faster feature delivery, reducing support friction, and ensuring consistent, accessible UI across products.
September 2025
114 Commits • 48 Features
Sep 1, 2025September 2025 (2025-09) performance summary for yamada-ui/yamada-ui. Delivered a mix of features driving design system stability and usability, along with targeted fixes that reduce composability risk and improve developer experience. Key work focused on explicit API exports, theming and typography stability, build reliability, and accessibility/Docs improvements. The work reinforces business value by enabling faster feature delivery, reducing support friction, and ensuring consistent, accessible UI across products.
August 2025
176 Commits • 71 Features
Aug 1, 2025Month: 2025-08 — Performance-focused month delivering core UI features, accessibility improvements, and maintainability enhancements across yamada-ui/yamada-ui. Key work spanned downloadable component enrichments, UX polish, and build/tooling improvements that deliver business value through better accessibility, faster diffing, and more consistent design tokens. Key outcomes included a robust global UI icon system (TurntableIcon) enabling consistent iconography across apps, a comprehensive Select/Combobox implementation with onSelect and activeDescendant tracking, and a refactor-led simplification of the codebase (removing ServerOnly, optimizing style merging, and improving descendant focus/index handling). Accessibility improvements covered focus options, initial focus naming, ARIA IDs, nested item handling, and event typing across components, complemented by UI style updates (focusVisibleRing, CSS variables for error and focus colors). Performance and tooling gains were achieved through parallelized diff computations, build data generation updates, and added process tooling (execa), along with CI/diff enhancements and updated dependencies. Documentation cleanup and consistency improvements across docs and code comments further improved maintainability and onboarding. Overall impact: faster, more accessible components; easier maintenance; and stronger alignment with business goals around usability, reliability, and scalable design systems.
176 Commits • 71 Features
Aug 1, 2025Month: 2025-08 — Performance-focused month delivering core UI features, accessibility improvements, and maintainability enhancements across yamada-ui/yamada-ui. Key work spanned downloadable component enrichments, UX polish, and build/tooling improvements that deliver business value through better accessibility, faster diffing, and more consistent design tokens. Key outcomes included a robust global UI icon system (TurntableIcon) enabling consistent iconography across apps, a comprehensive Select/Combobox implementation with onSelect and activeDescendant tracking, and a refactor-led simplification of the codebase (removing ServerOnly, optimizing style merging, and improving descendant focus/index handling). Accessibility improvements covered focus options, initial focus naming, ARIA IDs, nested item handling, and event typing across components, complemented by UI style updates (focusVisibleRing, CSS variables for error and focus colors). Performance and tooling gains were achieved through parallelized diff computations, build data generation updates, and added process tooling (execa), along with CI/diff enhancements and updated dependencies. Documentation cleanup and consistency improvements across docs and code comments further improved maintainability and onboarding. Overall impact: faster, more accessible components; easier maintenance; and stronger alignment with business goals around usability, reliability, and scalable design systems.
August 2025
July 2025
215 Commits • 98 Features
Jul 1, 2025July 2025 accomplishments for yamada-ui/yamada-ui: Delivered strategic features, fixed critical issues, and advanced the library's performance, maintainability, and documentation. Focus areas included unifying the color system, enhancing website/MDX workflows, improving accessibility in UI components, comprehensive core refactors, and typography/theme styling improvements, complemented by docs tooling and CI/build upgrades.
July 2025
215 Commits • 98 Features
Jul 1, 2025July 2025 accomplishments for yamada-ui/yamada-ui: Delivered strategic features, fixed critical issues, and advanced the library's performance, maintainability, and documentation. Focus areas included unifying the color system, enhancing website/MDX workflows, improving accessibility in UI components, comprehensive core refactors, and typography/theme styling improvements, complemented by docs tooling and CI/build upgrades.
June 2025
66 Commits • 43 Features
Jun 1, 2025June 2025 monthly summary for yamada-ui/yamada-ui emphasizing business value, reliability, and developer impact. Key features delivered, major fixes, and technical excellence across the codebase with a focus on accessibility, maintainability, and scalable architecture.
66 Commits • 43 Features
Jun 1, 2025June 2025 monthly summary for yamada-ui/yamada-ui emphasizing business value, reliability, and developer impact. Key features delivered, major fixes, and technical excellence across the codebase with a focus on accessibility, maintainability, and scalable architecture.
June 2025
May 2025
53 Commits • 21 Features
May 1, 2025May 2025 monthly summary for yamada-ui/yamada-ui: Delivered a coherent set of feature enhancements, internal refactors, and reliability improvements that improve developer experience, UI consistency, and performance. Highlights include documentation improvements, input group enhancements with id prop, password-input feature with tests, keyboard navigation utilities, and core React/style refinements. A critical animation timing/scale bug was fixed, and dependencies were refreshed across packages to keep the codebase current. These efforts reduce maintenance costs, accelerate downstream feature delivery, and improve accessibility and consistency across components.
May 2025
53 Commits • 21 Features
May 1, 2025May 2025 monthly summary for yamada-ui/yamada-ui: Delivered a coherent set of feature enhancements, internal refactors, and reliability improvements that improve developer experience, UI consistency, and performance. Highlights include documentation improvements, input group enhancements with id prop, password-input feature with tests, keyboard navigation utilities, and core React/style refinements. A critical animation timing/scale bug was fixed, and dependencies were refreshed across packages to keep the codebase current. These efforts reduce maintenance costs, accelerate downstream feature delivery, and improve accessibility and consistency across components.
April 2025
36 Commits • 16 Features
Apr 1, 2025April 2025 performance and feature delivery summary for yamada-ui/yamada-ui. Focused on performance, accessibility, and maintainability with notable feature completions and a targeted bug fix.
36 Commits • 16 Features
Apr 1, 2025April 2025 performance and feature delivery summary for yamada-ui/yamada-ui. Focused on performance, accessibility, and maintainability with notable feature completions and a targeted bug fix.
April 2025
March 2025
28 Commits • 8 Features
Mar 1, 2025March 2025 — yamada-ui/yamada-ui: Delivered critical features and stability improvements across the UI library, enhancing UX, accessibility, localization readiness, and developer productivity. Key features include a new LinkBox component with tests and import-path consolidation, comprehensive React UI styling and prop enhancements (including &:only-child, focus ring standardization, image props integration, lazy initialization, and visually-hidden clipping improvements), and avatar logic improvements. Notable fixes include i18n-provider type refactor, tests aligned with renamed properties, and broad codebase cleanup (renaming hooks props, updating types/utilities, lint/eslint config). These efforts establish a stronger foundation for cross-regional adoption and faster feature delivery, while reducing technical debt.
March 2025
28 Commits • 8 Features
Mar 1, 2025March 2025 — yamada-ui/yamada-ui: Delivered critical features and stability improvements across the UI library, enhancing UX, accessibility, localization readiness, and developer productivity. Key features include a new LinkBox component with tests and import-path consolidation, comprehensive React UI styling and prop enhancements (including &:only-child, focus ring standardization, image props integration, lazy initialization, and visually-hidden clipping improvements), and avatar logic improvements. Notable fixes include i18n-provider type refactor, tests aligned with renamed properties, and broad codebase cleanup (renaming hooks props, updating types/utilities, lint/eslint config). These efforts establish a stronger foundation for cross-regional adoption and faster feature delivery, while reducing technical debt.
February 2025
76 Commits • 32 Features
Feb 1, 2025February 2025 monthly summary for yamada-ui/yamada-ui: Delivered a substantial set of UI platform enhancements, performance improvements, and accessibility fixes that enable faster feature delivery and more consistent branding across components. Key features delivered include Stories and component storytelling enhancements (new and updated component stories, button-group stories, and related story hooks), Input Components and Styles for React, and DataList/list component improvements. A broad refactor program standardized UI styling, focus handling, and theming, with new Theme Tokens introduced to unify color and layout values across components and stories. Drawer component with modal utilities and editable component storytelling broadened UI capabilities, while color/theming improvements refined color handling and consistency across the library. Accessibility fixes (aria-label attributes and accessibility props) improved usability for assistive tech, and testing/CI updates increased reliability and coverage. Documentation updates reflect default values and links to component docs. Business value centers on faster UI composition, consistent branding, improved accessibility, and safer refactors across a large React component library.
76 Commits • 32 Features
Feb 1, 2025February 2025 monthly summary for yamada-ui/yamada-ui: Delivered a substantial set of UI platform enhancements, performance improvements, and accessibility fixes that enable faster feature delivery and more consistent branding across components. Key features delivered include Stories and component storytelling enhancements (new and updated component stories, button-group stories, and related story hooks), Input Components and Styles for React, and DataList/list component improvements. A broad refactor program standardized UI styling, focus handling, and theming, with new Theme Tokens introduced to unify color and layout values across components and stories. Drawer component with modal utilities and editable component storytelling broadened UI capabilities, while color/theming improvements refined color handling and consistency across the library. Accessibility fixes (aria-label attributes and accessibility props) improved usability for assistive tech, and testing/CI updates increased reliability and coverage. Documentation updates reflect default values and links to component docs. Business value centers on faster UI composition, consistent branding, improved accessibility, and safer refactors across a large React component library.
February 2025
January 2025
73 Commits • 44 Features
Jan 1, 2025January 2025: Delivered a substantial UI framework refresh for yamada-ui/yamada-ui, emphasizing business value through a cohesive design system, accessible components, and streamlined release processes. Major work spanned feature enhancements, bug fixes, theme overhauls, and CI/CD/docs automation, enabling faster, more reliable feature delivery.
January 2025
73 Commits • 44 Features
Jan 1, 2025January 2025: Delivered a substantial UI framework refresh for yamada-ui/yamada-ui, emphasizing business value through a cohesive design system, accessible components, and streamlined release processes. Major work spanned feature enhancements, bug fixes, theme overhauls, and CI/CD/docs automation, enabling faster, more reliable feature delivery.
December 2024
42 Commits • 17 Features
Dec 1, 20242024-12 monthly summary for yamada-ui/yamada-ui: delivered core UI enhancements, typing and DX improvements, and CI/build hygiene, driving faster feature delivery and more robust releases. Key features delivered include Breadcrumbs: SeparatorProps support for customizable separators, Changeset system enhancements enabling multi-component patching, Motion/Storybook typing refinements (MotionAs and useDarkMode), and CSS/component type refinements, plus code-quality improvements such as moving the animate declaration for clarity. Notable improvements in documentation and CI workflows increased release reliability and contributor clarity. Bug fix: removed async from the Render function in the notice module to fix rendering timing issues and improve reliability. Overall impact: reduced risk in deployments, clearer contributor guidance, and faster iteration cycles across the UI library. Technologies/skills demonstrated: TypeScript typing discipline, React component patterns, Storybook integration, Changesets workflows, CI/CD and build tooling, ESLint governance, and thorough documentation practices.
42 Commits • 17 Features
Dec 1, 20242024-12 monthly summary for yamada-ui/yamada-ui: delivered core UI enhancements, typing and DX improvements, and CI/build hygiene, driving faster feature delivery and more robust releases. Key features delivered include Breadcrumbs: SeparatorProps support for customizable separators, Changeset system enhancements enabling multi-component patching, Motion/Storybook typing refinements (MotionAs and useDarkMode), and CSS/component type refinements, plus code-quality improvements such as moving the animate declaration for clarity. Notable improvements in documentation and CI workflows increased release reliability and contributor clarity. Bug fix: removed async from the Render function in the notice module to fix rendering timing issues and improve reliability. Overall impact: reduced risk in deployments, clearer contributor guidance, and faster iteration cycles across the UI library. Technologies/skills demonstrated: TypeScript typing discipline, React component patterns, Storybook integration, Changesets workflows, CI/CD and build tooling, ESLint governance, and thorough documentation practices.
December 2024
November 2024
144 Commits • 62 Features
Nov 1, 2024November 2024 performance snapshot for yamada-ui/yamada-ui focused on delivering business-value through UI consistency, accessibility, and maintainability improvements, complemented by tooling and documentation enhancements. Key work included theme and component refactors that harmonized color shading and context-driven slider behavior, boosting visual consistency and developer productivity. Accessibility enhancements spanned color-picker ARIA attributes, progress and slider semantics, dynamic aria-labelledby for dropzone, and bilingual accessibility documentation, improving usability for assistive technologies and international users. A major refactor effort migrated FormControl to Fieldset across the codebase, coupled with calendar InputProps reuse and i18n enhancements (core and calendar locale handling), strengthening internationalization and form semantics. DataList and EmptyState components were added with flexible sizing (fit-content) and accompanying docs, alongside new layout primitives (Separator) and menu-related components (MenuSeparator) to streamline layout composition. Testing reliability was improved via waitFor in async tests, logging for focus checks, and enter-key support for checkbox and switch components, reducing flaky tests and enhancing test coverage. CI, changesets, and documentation received focused updates, including disabling eslint in craco for a smoother transition, updates to .gitignore/.nvmrc, changelog, and multilingual accessibility docs. Overall, the month delivered tangible business value by improving UI consistency, accessibility compliance, international readiness, and developer experience while maintaining a clear path for future enhancements.
November 2024
144 Commits • 62 Features
Nov 1, 2024November 2024 performance snapshot for yamada-ui/yamada-ui focused on delivering business-value through UI consistency, accessibility, and maintainability improvements, complemented by tooling and documentation enhancements. Key work included theme and component refactors that harmonized color shading and context-driven slider behavior, boosting visual consistency and developer productivity. Accessibility enhancements spanned color-picker ARIA attributes, progress and slider semantics, dynamic aria-labelledby for dropzone, and bilingual accessibility documentation, improving usability for assistive technologies and international users. A major refactor effort migrated FormControl to Fieldset across the codebase, coupled with calendar InputProps reuse and i18n enhancements (core and calendar locale handling), strengthening internationalization and form semantics. DataList and EmptyState components were added with flexible sizing (fit-content) and accompanying docs, alongside new layout primitives (Separator) and menu-related components (MenuSeparator) to streamline layout composition. Testing reliability was improved via waitFor in async tests, logging for focus checks, and enter-key support for checkbox and switch components, reducing flaky tests and enhancing test coverage. CI, changesets, and documentation received focused updates, including disabling eslint in craco for a smoother transition, updates to .gitignore/.nvmrc, changelog, and multilingual accessibility docs. Overall, the month delivered tangible business value by improving UI consistency, accessibility compliance, international readiness, and developer experience while maintaining a clear path for future enhancements.
October 2024
1 Commits • 1 Features
Oct 1, 2024October 2024 monthly summary for yamada-ui/yamada-ui: Delivered an accessibility enhancement for SegmentedControl by adding role="radiogroup" to improve screen reader interpretation; changes documented in changeset. No major bugs fixed this month; focus remained on accessibility improvements, code quality, and maintainability. Impact: enhanced accessibility for assistive technologies, enabling broader adoption and better usability in the UI library. Technologies/skills demonstrated: React component accessibility, ARIA attributes, changeset documentation, and adherence to repository conventions.
1 Commits • 1 Features
Oct 1, 2024October 2024 monthly summary for yamada-ui/yamada-ui: Delivered an accessibility enhancement for SegmentedControl by adding role="radiogroup" to improve screen reader interpretation; changes documented in changeset. No major bugs fixed this month; focus remained on accessibility improvements, code quality, and maintainability. Impact: enhanced accessibility for assistive technologies, enabling broader adoption and better usability in the UI library. Technologies/skills demonstrated: React component accessibility, ARIA attributes, changeset documentation, and adherence to repository conventions.
October 2024
Activity
Loading activity data...
Quality Metrics
Correctness93.8%
Maintainability93.6%
Architecture90.8%
Performance89.6%
AI Usage22.4%
Skills & Technologies
Programming Languages
BashCSSCSS-in-JSDockerfileHTMLHandlebarsJSONJavaScriptMDXMarkdown
Technical Skills
API DesignAPI DevelopmentAPI IntegrationAPI developmentAPI integrationARIAAccessibilityAccessibility (ARIA)Accessibility (a11y)Accessibility ImprovementAccessibility TestingAnimationAnimation LibrariesAsynchronous ProgrammingAutomation
Repositories Contributed To
Overview of all repositories you've contributed to across your timeline