Throwing across the bridge loses your exception type
Swift sees NSError with a wrapped message, so a typed catch becomes a string match.
ios
7 posts
The iOS framework you export is an API, and nobody reviews it
Every public declaration in the shared module becomes Swift API. internal is the design tool.
Your Kotlin class becomes an Objective-C class, which is why the name is wrong
Obj-C has no namespaces. Everything exported is prefixed and flattened, and each Kotlin idiom loses something specific.
Kotlin/Native memory is not the JVM's, and a retain cycle crosses the bridge
Kotlin objects held by Swift are ARC-counted. A loop through both runtimes is invisible to both profilers.
Your suspend function becomes a callback in Swift, and cancellation does not survive
Swift cancels its Task. The Kotlin Job never hears about it, so the work keeps running.
The keychain repair that broke signing for a day
Removing a stale tmp keychain cleared the default and broke iOS signing machine-wide, while the provisioning repo I spent a day suspecting was never at fault.
Signing state has exactly one owner, or it has none
Certificates, profiles and keychain state get asserted by one flow or by nobody — and a second writer stays invisible until the next build needs to sign.