Swiftui

@expo/ui's BottomSheet bridges to SwiftUI's .sheet — the same code is a bottom drawer on iPhone and a centered form-sheet on iPad, with presentationDetents ignored. This reveals an implicit premise of cross-platform abstractions.

SwiftUI only hit-tests visible leaf subviews — how this geometric premise makes an "onTapGesture on the container" register only on subview taps, and why the modifier order can't be reversed.

A deep dive into building CCBuddy, a native macOS menu bar application that monitors Claude Code token usage and costs in real-time. Built with Swift, SwiftUI, and AppKit, featuring a glassmorphism UI and comprehensive cost tracking.