feat: implement useBlocker hook #37
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Add useBlocker hook to prevent navigation away from the current route. This is useful for scenarios like unsaved form data or ongoing uploads. - Add BlockerContext and registry for managing multiple blockers - Integrate blocker checks into NavigationAPIAdapter - Use ref pattern to avoid stale closure issues - Add comprehensive tests for various blocking scenarios - Update documentation with usage examples The hook supports: - Multiple blockers in the component tree (any true blocks) - Dynamic blocking based on component state - Calling confirm() inside the callback for user prompts - Proper cleanup on unmount
- Change signature from useBlocker(fn) to useBlocker({ shouldBlock })
- Remove ref pattern, fix stale closure via useCallback in tests/docs
- Export UseBlockerOptions type
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Add useBlocker hook to prevent navigation away from the current route.
This is useful for scenarios like unsaved form data or ongoing uploads.
The hook supports: