An experimental way to extract SwiftUI views from an TupleView built by ViewBuilder.

extractViewsFromContent.swift

import SwiftUI

func extractViewsFromContent<Content: View> (@ViewBuilder content: () -> Content) -> [Any] {
    let tupleView = content()
    let tupleViewMirror = Mirror(reflecting: tupleView)
    let tuple = tupleViewMirror.children.first!.value
    let tupleMirror = Mirror(reflecting: tuple)
    let views = tupleMirror.children.map { $0.value }
    return views
}