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Primer React is a collection of React components built on GitHub's Primer Design System. It allows developers to quickly build user interfaces that adhere to a consistent design language and brand guidelines. When integrated into a website, this script provides the necessary JavaScript logic and styles for rendering these components, ensuring a uniform look and feel across different parts of an application. It enhances the development process by offering pre-built, accessible, and themeable UI elements, reducing the need to build them from scratch. This library primarily focuses on the presentation layer, handling visual and interactive aspects of UI components like buttons, forms, navigation, and layout elements. It does not typically engage in data collection or external tracking activities on its own. Its purpose is to facilitate the creation of robust and visually consistent front-end experiences within an application.

Capabilities

Primer React offers a robust set of reusable React components that implement GitHub's design system. This helps maintain visual consistency and brand identity across web applications. It provides pre-built, accessible, and responsive UI elements, significantly speeding up front-end development by allowing developers to compose interfaces quickly rather than building every component from scratch. The library handles common UI patterns and interactions, ensuring a consistent user experience and reducing development overhead for styling and behavior.

  • React Components
  • Design System
  • UI Library
  • Consistency
  • Accessibility
  • Reusable UI
  • Front-end Development

Digital Footprint

Known Cookies

_gh_sess
A session cookie used by GitHub to maintain user session state. • Session
logged_in
Indicates whether a user is currently logged into GitHub. • 1 year
dotcom_user
Stores the username of the currently logged-in user. • 1 year
user_session
Used by GitHub for maintaining authenticated user sessions, potentially when interactive GitHub elements are embedded and require user context. • Persistent (e.g., 6 months to 1 year)
__Host-user_session_same_site
A secure, same-site variant of the user session cookie, enhancing security for GitHub interactions. • Session
_octo
Used by GitHub for analytics and to understand user behavior across its services, including embedded components. • 1 year
gh_mktg_engagement
Tracks user interaction and engagement with marketing content displayed in the header. • 30 minutes
gh_mktg_abtest_id
Stores the identifier for the A/B test variant displayed in the header to ensure consistent experience. • 1 day
_device_id
Identifies a specific device for GitHub's services, potentially for security or analytics purposes. • 1 year
__Host-gh_session
Authentication and session management for GitHub services, potentially used when interacting with embedded GitHub features that require user context. • session
gh_high_contrast
Stores the user's preference for enabling or disabling high-contrast mode on the website. • 1 year
cookie_consent_preferences
Stores the user's cookie consent choices and preferences. • 1 year
_gh_client_id
Potentially used for identifying client interactions with GitHub features. • 1 year
_gh_session
If user is logged into GitHub and interacting with embedded content, this may store session information. • Session
_gh_*
Generic cookie used by GitHub for various purposes, potentially for session state or analytics related to embedded content. • varies
preferred_color_mode
Stores the user's preferred color scheme (e.g., light or dark mode). • 1 year
tz
Stores the user's local timezone preference. • session
gh_contrast_mode
Stores the user's preference for high-contrast mode to ensure consistent display across sessions. • 1 year
gh_cookie_consent
Records the user's consent preferences for cookies, particularly those related to functional settings. • 1 year
_gh_session_*
A hypothetical cookie used by GitHub services for session management if a user authenticates through an embedded GitHub feature or widget. • Session

Endpoints

  • github.githubassets.com
  • github.com
  • api.github.com
  • githubassets.com
  • avatars.githubusercontent.com
  • collector.githubapp.com
  • gist.github.com
  • collector.github.com
  • assets-cdn.github.com
  • githubusercontent.com

Security Incidents & Vulnerabilities

No known historical CVEs or supply chain attacks found for these specific resources.