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Addon Bone - Cross-Browser Web Extension Framework with shared code base

Cross-browser framework for developing extensions on a single code base. Enables creating multiple production-grade extensions with different localizations, icons, and designs while maintaining identical core functionality.

Core Concept

• Single code base: maintain one set of source files for all extensions.
• Flexibility: supports both multi-package setups (multiple extensions in one repository) and standalone projects.
• Modern workflow: automatic merging of styles, scripts, content scripts, and background scripts.

Supported Platforms & Manifests

• Browsers: Chrome, Firefox, Opera, Safari, Edge.
• Manifest Versions: Manifest V2 and V3.

Entry Points

• Background Page
• Content Scripts
• Commands
• Localization
• Icons
• Messages
• Services
• Relay
• Offscreen
• Popup
• Sidebar

Plugins

• Extensibility via Plugins: write modules for background pages, content scripts, and any supported entry points.
• Automatic Integration: plugins are automatically included in the build process and update the manifest.

Services & Relay

• Services: class-based layer for background interactions without boilerplate. Service methods are available across all extension layers via simple calls.
• Relay: similar mechanism for content pages, bypassing CSP and getUserGesture restrictions by leveraging scripting contexts.

Offscreen

• Manifest V2: offscreen support via <iframe> within the Background Page.
• Manifest V3: native Offscreen API.

Benefits

• 🔌 Plugin Architecture: easily extend functionality and add features without modifying the core framework.
• 🔧 Faster Development: minimal configuration and boilerplate.
• 🌐 Cross-Platform: write code once; run everywhere regardless of browser or manifest version.
• 🔄 Scalable: seamlessly add new layers and entry points.
• 🚀 Modern Design: cutting-edge architecture following best practices for extension publishing.

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This framework is under active development. Detailed documentation and usage examples will be available soon on the official website.