Add @warn_unqualified_access to reducer operators. (pointfreeco#1950)

Author: mbrandonw

Sources/ComposableArchitecture/Internal/Deprecations.swift

@@ -88,6 +88,7 @@ extension ViewStore {
 
 extension ReducerProtocol {
   @available(*, deprecated, renamed: "_printChanges")
+  @warn_unqualified_access
   public func debug() -> _PrintChangesReducer<Self> {
     self._printChanges()
   }

Sources/ComposableArchitecture/Reducer/Reducers/DebugReducer.swift

@@ -7,6 +7,7 @@ extension ReducerProtocol {
   /// - Parameter printer: A printer for printing debug messages.
   /// - Returns: A reducer that prints debug messages for all received actions.
   @inlinable
+  @warn_unqualified_access
   public func _printChanges(
     _ printer: _ReducerPrinter<State, Action>? = .customDump
   ) -> _PrintChangesReducer<Self> {

Sources/ComposableArchitecture/Reducer/Reducers/DependencyKeyWritingReducer.swift

@@ -66,6 +66,7 @@ extension ReducerProtocol {
   ///   - value: The new value to set for the item specified by `keyPath`.
   /// - Returns: A reducer that has the given value set in its dependencies.
   @inlinable
+  @warn_unqualified_access
   public func dependency<Value>(
     _ keyPath: WritableKeyPath<DependencyValues, Value>,
     _ value: Value
@@ -117,6 +118,7 @@ extension ReducerProtocol {
   ///   - transform: A closure that is handed a mutable instance of the value specified by the key
   ///     path.
   @inlinable
+  @warn_unqualified_access
   public func transformDependency<V>(
     _ keyPath: WritableKeyPath<DependencyValues, V>,
     transform: @escaping (inout V) -> Void

Sources/ComposableArchitecture/Reducer/Reducers/ForEachReducer.swift

@@ -50,6 +50,7 @@ extension ReducerProtocol {
   ///     state.
   /// - Returns: A reducer that combines the child reducer with the parent reducer.
   @inlinable
+  @warn_unqualified_access
   public func forEach<ElementState, ElementAction, ID: Hashable, Element: ReducerProtocol>(
     _ toElementsState: WritableKeyPath<State, IdentifiedArray<ID, ElementState>>,
     action toElementAction: CasePath<Action, (ID, ElementAction)>,

Sources/ComposableArchitecture/Reducer/Reducers/IfCaseLetReducer.swift

@@ -46,6 +46,7 @@ extension ReducerProtocol {
   ///     present
   /// - Returns: A reducer that combines the child reducer with the parent reducer.
   @inlinable
+  @warn_unqualified_access
   public func ifCaseLet<CaseState, CaseAction, Case: ReducerProtocol>(
     _ toCaseState: CasePath<State, CaseState>,
     action toCaseAction: CasePath<Action, CaseAction>,

Sources/ComposableArchitecture/Reducer/Reducers/IfLetReducer.swift

@@ -43,6 +43,7 @@ extension ReducerProtocol {
   ///     state.
   /// - Returns: A reducer that combines the child reducer with the parent reducer.
   @inlinable
+  @warn_unqualified_access
   public func ifLet<WrappedState, WrappedAction, Wrapped: ReducerProtocol>(
     _ toWrappedState: WritableKeyPath<State, WrappedState?>,
     action toWrappedAction: CasePath<Action, WrappedAction>,

Sources/ComposableArchitecture/Reducer/Reducers/SignpostReducer.swift

@@ -21,6 +21,7 @@ extension ReducerProtocol {
   ///   - log: An `OSLog` to use for signposts.
   /// - Returns: A reducer that has been enhanced with instrumentation.
   @inlinable
+  @warn_unqualified_access
   public func signpost(
     _ prefix: String = "",
     log: OSLog = OSLog(