Cmd+Click on type names in hover tooltips to navigate to their definitions — like IntelliJ IDEA.
VS Code's hover tooltips show type information but the text is static. This extension makes type names in hover clickable, so you can drill into definitions without leaving the hover context.
Features
Cmd+Click in hover: Hold Cmd and hover over a type name in the tooltip — it underlines. Click to jump to its definition.
Definition preview: Hover tooltips are enriched with source code previews of referenced types.
Language-agnostic: Works with any language that has a VS Code language server (Python, TypeScript, JavaScript, Java, C/C++, Go, Rust, etc.)
Recursive navigation: Types in the definition preview are also clickable — keep drilling down.
How It Works
Protocol-level hover interception: Patches the shared ExtHostLanguageFeatures.$provideHover via V8 Inspector to intercept all hover results (including from Pylance, TypeScript LS, etc.)
Renderer DOM injection: Injects JavaScript into VS Code's Electron renderer via CDP (Chrome DevTools Protocol) to add Cmd+Click behavior to hover code blocks.
Click communication: Uses Runtime.addBinding (CSP-safe) to communicate clicks from the renderer back to the extension host.
Language server integration: Navigation uses executeDefinitionProvider — the same mechanism as the editor's native Cmd+Click.
Usage
Install the extension
Hover over any symbol in supported languages
Hold Cmd (macOS) / Ctrl (Windows/Linux) and move your mouse over type names in the hover tooltip
The type name underlines — click to navigate to its definition
Supported Languages
Python, JavaScript, TypeScript, JSX/TSX, Java, C, C++, C#, Go, Rust, Ruby, PHP, Swift, Kotlin — any language with a definition provider.
Requirements
VS Code 1.75+
macOS (Windows/Linux support planned)
Known Limitations
The V8 Inspector technique depends on VS Code's internal structure, which may change across versions
Renderer injection requires the main VS Code process to be detectable
Preview code fences in hover may not always render as interactive elements due to VS Code's markdown renderer limitations
