Add precondition to give more info before crash.

detroit-labs · Nov 24, 2020 · 324d152 · 324d152
1 parent 7de16cb
commit 324d152
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/Sources/SheetPresentationController.swift b/Sources/SheetPresentationController.swift
@@ -54,6 +54,8 @@ class SheetPresentationController: UIPresentationController {
         let view = PassthroughView()
         view.backgroundColor = .clear
 
+        precondition(presentingViewController.view != nil)
+
         view.passthroughViews = [presentingViewController.view]
 
         return view