Map who consumes the module
Determine whether the code is rebuilt with the application or distributed as a binary framework that clients update separately. These have different compatibility requirements. Inventory exported APIs and the consumers you do not control, including extensions and plugins maintained outside the main repository.
For a separately distributed Swift framework, review library-evolution and module-interface requirements using Swift official guidance. Enabling a distribution setting is an architectural decision, not a generic security switch. Avoid turning it on everywhere merely because the option sounds like a release hardening feature.
Identify names used outside static calls
Serialized property names, network fields, database migrations and user documents can depend on stable keys even when the corresponding Swift type is internal. Objective-C selectors, KVC or KVO, storyboards and runtime lookups create additional name dependencies. Write these down before considering a transformation.
A source compiler sees some contracts, but cannot infer all remotely stored documents or third-party expectations. Build a small compatibility fixture for each dynamic boundary. For example, decode a record produced by the prior public release and confirm that current code still handles it without silently dropping important values.
Review interfaces and inlining deliberately
Public module interfaces are part of the distribution surface of a binary SDK. Inlinable implementation can also become visible or compiled into clients. If an algorithm is proprietary, evaluate whether exposing it through an inlinable public entry point serves the intended API design.
Do not delete required interfaces from a distributed framework to make the artifact look more private. Instead reduce unnecessary API surface in a planned compatible release, or move online authority behind a service if the product allows it. Export trimming that prevents customers from linking is a failed build, not a protection result.
Validate with downstream behavior
Keep an older representative consumer and build or run it against the candidate framework according to the promised compatibility model. Test Objective-C integration and actual data migrations, not just Swift unit tests that are rebuilt alongside the changed source. Those unit tests may bypass the broken contract.
For a rename experiment, retain original artifacts and a precise change map privately. Verify signing after rebuilding. Compare crash symbolication, serialized output and public API behavior, then assess any measured reduction in exposed metadata separately from compatibility.
CloneGuard identifies platform context and directs this review; it does not provide a compiler-aware Swift obfuscator or prove ABI safety. A clean audit or unchanged outer package hash cannot substitute for the downstream tests that define the framework promise.
Practical checklist
- List consumers and promised compatibility.
- Inventory wire keys and dynamic names.
- Review required interfaces and inlinable code.
- Run downstream fixtures before signing.
Sources and further reading
Primary references support the technical details. Procedures here are guidance; only explicitly recorded project results describe tests we ran.
Prepared with AI assistance. How this library is produced. Suggest a correction; keep private code and credentials out of public issues.