### Define Basic Analytics Client Structure

Source: https://github.com/pointfreeco/xctest-dynamic-overlay/blob/main/Sources/XCTestDynamicOverlay/Documentation.docc/Articles/GettingStarted.md

This Swift code defines a AnalyticsClient struct, which includes a track function for handling events and a nested Event struct. It serves as a foundational example for demonstrating dependency injection and testing strategies.

```Swift
struct AnalyticsClient {
  var track: (Event) -> Void

  struct Event: Equatable {
    var name: String
    var properties: [String: String]
  }
}
```

--------------------------------

### Parent Model Providing Callback Implementation

Source: https://github.com/pointfreeco/xctest-dynamic-overlay/blob/main/Sources/IssueReporting/Documentation.docc/Articles/GettingStarted.md

Shows how a `ParentModel` instantiates `ChildModel` and provides the concrete implementation for the `onDelete` closure. This setup ensures the parent feature performs the actual deletion logic when the child requests it.

```Swift
class ParentModel {
  var child: ChildModel?

  func presentChildButtonTapped() {
    child = ChildModel(onDelete: {
      // Parent feature performs deletion logic
    })
  }
}
```

--------------------------------

### Handle Complex Dependencies with XCTUnimplemented and Placeholders

Source: https://github.com/pointfreeco/xctest-dynamic-overlay/blob/main/Sources/XCTestDynamicOverlay/Documentation.docc/Articles/GettingStarted.md

This Swift example demonstrates XCTUnimplemented's versatility with a more complex AppDependencies struct. It shows how to use XCTUnimplemented for methods that throw or require return values, including the optional placeholder parameter for default values.

```Swift
struct AppDependencies {
  var date: () -> Date = Date.init,
  var fetchUser: (User.ID) async throws -> User,
  var uuid: () -> UUID = UUID.init
}

extension AppDependencies {
  static let unimplemented = Self(
    date: XCTUnimplemented("\(Self.self).date", placeholder: Date()),
    fetchUser: XCTUnimplemented("\(Self.self).fetchUser"),
    uuid: XCTUnimplemented("\(Self.self).uuid", placeholder: UUID())
  )
}
```

--------------------------------

### Initialize ViewModel with Analytics Dependency

Source: https://github.com/pointfreeco/xctest-dynamic-overlay/blob/main/Sources/XCTestDynamicOverlay/Documentation.docc/Articles/GettingStarted.md

This Swift snippet shows the LoginViewModel's initializer, which accepts an AnalyticsClient as a dependency. This pattern promotes testability by allowing different implementations of the analytics client to be injected during testing.

```Swift
class LoginViewModel: ObservableObject {
  // ...

  init(analytics: AnalyticsClient) {
    // ...
  }

  // ...
}
```

--------------------------------

### Test Login Flow with Buffered Analytics

Source: https://github.com/pointfreeco/xctest-dynamic-overlay/blob/main/Sources/XCTestDynamicOverlay/Documentation.docc/Articles/GettingStarted.md

This Swift test function demonstrates how to test a login flow by providing a custom AnalyticsClient that buffers events into an array. This allows the test to assert on the exact events tracked without sending them to a live analytics service.

```Swift
func testLogin() {
  var events: [AnalyticsClient.Event] = []
  let viewModel = LoginViewModel(
    analytics: .test { events.append($0) }
  )

  // ...

  XCTAssertEqual(events, [.init(name: "Login Success")])
}
```

--------------------------------

### Add XCTestDynamicOverlay as SPM Package Dependency

Source: https://github.com/pointfreeco/xctest-dynamic-overlay/blob/main/Sources/IssueReporting/Documentation.docc/Articles/GettingStarted.md

Specifies the dependency in a Swift Package Manager's Package.swift file, pointing to the XCTestDynamicOverlay repository and a minimum version. This is the first step to integrate the library into your project.

```Swift
.package(url: "https://github.com/pointfreeco/xctest-dynamic-overlay", from: "1.5.0"),
```

--------------------------------

### Add IssueReporting Product to Target

Source: https://github.com/pointfreeco/xctest-dynamic-overlay/blob/main/Sources/IssueReporting/Documentation.docc/Articles/GettingStarted.md

Adds the 'IssueReporting' product from the 'xctest-dynamic-overlay' package as a dependency to a specific target within a Swift Package Manager project. This makes the library's functionalities available to your application or module.

```Swift
.target(
  "MyTarget",
  dependencies: [
    .product(name: "IssueReporting", package: "xctest-dynamic-overlay")
  ]
)
```

--------------------------------

### Simplify Unimplemented Client with XCTUnimplemented Helper

Source: https://github.com/pointfreeco/xctest-dynamic-overlay/blob/main/Sources/XCTestDynamicOverlay/Documentation.docc/Articles/GettingStarted.md

This Swift extension shows how to use the XCTUnimplemented helper from XCTestDynamicOverlay to concisely define the unimplemented static instance. This helper automatically creates a failing closure, reducing boilerplate code.

```Swift
extension AnalyticsClient {
  static let unimplemented = Self(
    track: XCTUnimplemented("\(Self.self).track")
  )
}
```

--------------------------------

### Override Callback After Child Model Creation

Source: https://github.com/pointfreeco/xctest-dynamic-overlay/blob/main/Sources/IssueReporting/Documentation.docc/Articles/GettingStarted.md

Illustrates how the `onDelete` closure can be assigned after the `ChildModel` is instantiated. This approach addresses the initialization restriction but introduces a potential for laxness, as the callback might be forgotten.

```Swift
func presentChildButtonTapped() {
  child = ChildModel()
  child.onDelete = {
    // Parent feature performs deletion logic
  }
}
```

--------------------------------

### Issue Reporting Library API Reference

Source: https://github.com/pointfreeco/xctest-dynamic-overlay/blob/main/Sources/IssueReporting/Documentation.docc/Articles/GettingStarted.md

Core API elements for the Issue Reporting library, including the primary function for reporting issues, available issue reporter types, and methods for overriding reporting behavior. This section details the main components developers interact with.

```APIDOC
Function: reportIssue(_:fileID:filePath:line:column:)
  Purpose: Primary tool for reporting an issue in application code.
  Usage: Invoke from anywhere to signal an unexpected event.
  Default Behavior: Triggers an unobtrusive, purple runtime warning in Xcode.

Protocol: IssueReporter
  Purpose: Defines the interface for custom issue reporting mechanisms.
  Requirement:
    reportIssue(_:fileID:filePath:line:column:)
      Purpose: Implement to define custom issue reporting logic.

Enum/Static Properties: IssueReporter
  runtimeWarning:
    Purpose: Default reporter. Issues reported as purple runtime warnings in Xcode; printed to console elsewhere.
  breakpoint:
    Purpose: Triggers a breakpoint, stopping app execution for debugging.
  fatalError:
    Purpose: Raises a fatal error, permanently stopping app execution.

Function: withIssueReporters(_:operation:)
  Purpose: Temporarily overrides issue reporters for a lexical scope.
  Parameters:
    reporters: An array of IssueReporter instances to use for the scope.
    operation: A closure containing the code for which reporters are overridden.
  Example Usage:
    - withIssueReporters([]) { ... } // Disable reporting
    - withIssueReporters(IssueReporters.current + [.breakpoint]) { ... } // Add breakpoint reporter

Static Variable: IssueReporters.current
  Purpose: Globally controls the active issue reporters.
  Usage: Typically set at the application's entry point (e.g., App init).
  Type: [IssueReporter]
  Example Usage: IssueReporters.current = [.fatalError]
```

--------------------------------

### Integrate XCTestDynamicOverlay for Unimplemented Client

Source: https://github.com/pointfreeco/xctest-dynamic-overlay/blob/main/Sources/XCTestDynamicOverlay/Documentation.docc/Articles/GettingStarted.md

This Swift code block demonstrates how XCTestDynamicOverlay enables defining both the AnalyticsClient and its unimplemented static instance within the same application target. This eliminates the need for separate test support modules, simplifying project structure.

```Swift
struct AnalyticsClient {
  var track: (Event) -> Void

  struct Event: Equatable {
    var name: String
    var properties: [String: String]
  }
}

import XCTestDynamicOverlay

extension AnalyticsClient {
  static let unimplemented = Self(
    track: { _ in XCTFail("\(Self.self).track is unimplemented.") }
  )
}
```

--------------------------------

### Temporarily Disable Issue Reporting

Source: https://github.com/pointfreeco/xctest-dynamic-overlay/blob/main/Sources/IssueReporting/Documentation.docc/Articles/GettingStarted.md

Shows how to use `withIssueReporters([])` to temporarily disable all issue reporting within a specific lexical scope. Any issues raised inside this block will not be reported.

```Swift
withIssueReporters([]) {
  // Any issues raised here will not be reported.
}
```

--------------------------------

### Create Unimplemented Analytics Client with XCTFail

Source: https://github.com/pointfreeco/xctest-dynamic-overlay/blob/main/Sources/XCTestDynamicOverlay/Documentation.docc/Articles/GettingStarted.md

This Swift extension defines an unimplemented static instance of AnalyticsClient. When its track method is called, it triggers an XCTFail, ensuring that tests which should not track analytics will fail, providing strong guarantees.

```Swift
import XCTest

extension AnalyticsClient {
  static let unimplemented = Self(
    track: { _ in XCTFail("\(Self.self).track is unimplemented.") }
  )
}
```

--------------------------------

### Deep Linking Problem with Required Callback

Source: https://github.com/pointfreeco/xctest-dynamic-overlay/blob/main/Sources/IssueReporting/Documentation.docc/Articles/GettingStarted.md

Demonstrates a scenario, such as deep linking, where providing the `onDelete` closure at `ChildModel` initialization is problematic or unclear. This highlights the inflexibility of strictly requiring the callback during instantiation.

```Swift
import SwiftUI 

@main
struct MyApp: App {
  var body: some Scene {
    ParentView(
      model: ParentModel(
        child: ChildModel(onDelete: { /* ??? */ })
      )
    )
  }
}
```

--------------------------------

### Child Model with Unimplemented Callback

Source: https://github.com/pointfreeco/xctest-dynamic-overlay/blob/main/Sources/IssueReporting/Documentation.docc/Articles/GettingStarted.md

Shows the recommended solution using `unimplemented("onDelete")` from the library. This allows the closure to be optional at initialization but reports an issue if invoked without being overridden, balancing strictness and flexibility.

```Swift
@Observable
class ChildModel {
  var onDelete: () -> Void = unimplemented("onDelete")
  // ...
}
```

--------------------------------

### Test Validation with Unimplemented Analytics

Source: https://github.com/pointfreeco/xctest-dynamic-overlay/blob/main/Sources/XCTestDynamicOverlay/Documentation.docc/Articles/GettingStarted.md

This Swift test function illustrates how to use the unimplemented analytics client. By injecting this client, the test can verify that no analytics events are tracked during the validation process, making the test suite more robust.

```Swift
func testValidation() {
  let viewModel = LoginViewModel(
    analytics: .unimplemented
  )

  // ...
}
```

--------------------------------

### Report an Issue with reportIssue Function

Source: https://github.com/pointfreeco/xctest-dynamic-overlay/blob/main/Sources/IssueReporting/Documentation.docc/Articles/GettingStarted.md

Demonstrates how to use the `reportIssue` function to signal an unexpected condition in application code. When invoked, it triggers a runtime warning in Xcode by default, providing visual feedback without stopping execution.

```Swift
guard let lastItem = items.last
else {
  reportIssue("'items' should never be empty.")
  return 
}
// ...
```

--------------------------------

### Define Child Model with Required Callback Closure

Source: https://github.com/pointfreeco/xctest-dynamic-overlay/blob/main/Sources/IssueReporting/Documentation.docc/Articles/GettingStarted.md

Illustrates a `ChildModel` that requires an `onDelete` callback closure to communicate with its parent. The `deleteButtonTapped` method invokes this closure, demonstrating a common pattern for inter-feature communication.

```Swift
@Observable
class ChildModel {
  var onDelete: () -> Void

  func deleteButtonTapped() {
    onDelete()
  }
}
```

--------------------------------

### Temporarily Add Breakpoint Issue Reporter

Source: https://github.com/pointfreeco/xctest-dynamic-overlay/blob/main/Sources/IssueReporting/Documentation.docc/Articles/GettingStarted.md

Illustrates how to add the `breakpoint` issue reporter to the current set of reporters for a specific lexical scope. Issues reported within this block will trigger a breakpoint, allowing for immediate debugging.

```Swift
withIssueReporters(IssueReporters.current + [.breakpoint]) {
  // Any issues reported here will trigger a breakpoint
}
```

--------------------------------

### Child Model with Optional Empty Callback Default

Source: https://github.com/pointfreeco/xctest-dynamic-overlay/blob/main/Sources/IssueReporting/Documentation.docc/Articles/GettingStarted.md

Presents a modification to `ChildModel` where `onDelete` is given an empty default closure. This makes the callback optional during initialization but can lead to subtle bugs if the closure is not overridden and is later invoked.

```Swift
@Observable
class ChildModel {
  var onDelete: () -> Void = {}
  // ...
}
```

--------------------------------

### Globally Override Issue Reporters in App Init

Source: https://github.com/pointfreeco/xctest-dynamic-overlay/blob/main/Sources/IssueReporting/Documentation.docc/Articles/GettingStarted.md

Demonstrates how to globally set the issue reporter to `fatalError` within the `init` method of a SwiftUI `App` struct. This ensures that all reported issues throughout the application's lifecycle will cause a fatal error, stopping execution.

```Swift
import IssueReporting
import SwiftUI 

@main
struct MyApp: App {
  init() {
    IssueReporters.current = [.fatalError]
  }
  var body: some Scene {
    // ...
  }
}
```

--------------------------------

### XCTestDynamicOverlay XCTFail Function API Reference

Source: https://github.com/pointfreeco/xctest-dynamic-overlay/blob/main/Sources/XCTestDynamicOverlay/Documentation.docc/Extensions/XCTFail.md

Provides an overview of the `XCTFail` function within the `XCTestDynamicOverlay` module, detailing its overloads and associated context.

```APIDOC
Function: XCTestDynamicOverlay/XCTFail(_:file:line:)
Topics:
  Overloads:
    - XCTFail(_:)
  Context:
    - XCTFailContext
```

--------------------------------

### Importing XCTest Directly Causes Build Errors

Source: https://github.com/pointfreeco/xctest-dynamic-overlay/blob/main/Sources/XCTestDynamicOverlay/Documentation.docc/XCTestDynamicOverlay.md

Directly importing the XCTest framework into application or library source files leads to linker warnings and prevents the target from building. This is due to conflicts with test header search paths and linker configurations, making XCTest incompatible with regular production code compilation.

```swift
import XCTest
// 🛑 ld: warning: Could not find or use auto-linked library 'XCTestSwiftSupport'
// 🛑 ld: warning: Could not find or use auto-linked framework 'XCTest'
```

--------------------------------

### XCTestDynamicOverlay API Reference

Source: https://github.com/pointfreeco/xctest-dynamic-overlay/blob/main/Sources/XCTestDynamicOverlay/Documentation.docc/XCTestDynamicOverlay.md

This section outlines the core API functions provided by XCTestDynamicOverlay, categorized into assertion overlays and unimplemented dependency handlers. These functions allow for dynamic XCTest assertions and placeholder implementations within application and library code.

```APIDOC
Overlays:
  XCTFail(_:file:line:)
  XCTExpectFailure(_:enabled:strict:failingBlock:issueMatcher:)

Unimplemented dependencies:
  unimplemented(_:placeholder:fileID:line:)-70bno
  unimplemented(_:fileID:line:)-7znj2
```

--------------------------------

### API Documentation for withIssueReporters Function

Source: https://github.com/pointfreeco/xctest-dynamic-overlay/blob/main/Sources/IssueReporting/Documentation.docc/Extensions/withIssueReporters.md

Details the `withIssueReporters` function and its overload, outlining their signatures and purpose.

```APIDOC
Function: IssueReporting/withIssueReporters(_:operation:)
  Description: Executes an operation with issue reporters.

Overload: withIssueReporters(_:isolation:operation:)
  Description: Executes an operation with issue reporters, specifying an isolation level.
```

--------------------------------

### IssueReporting/withIssueContext API Reference

Source: https://github.com/pointfreeco/xctest-dynamic-overlay/blob/main/Sources/IssueReporting/Documentation.docc/Extensions/withIssueContext.md

Detailed API reference for the `withIssueContext` function, including its parameters and available overloads.

```APIDOC
IssueReporting/withIssueContext(fileID:filePath:line:column:operation:)
Topics:
  Overloads:
    withIssueContext(fileID:filePath:line:column:isolation:operation:)
```

--------------------------------

### Configure Swift Test Target for Release Mode Issue Reporting

Source: https://github.com/pointfreeco/xctest-dynamic-overlay/blob/main/Sources/IssueReporting/Documentation.docc/Articles/ReleaseMode.md

This Swift Package Manager configuration snippet demonstrates how to link the 'IssueReportingTestSupport' product to a test target. By adding this dependency, the 'IssueReporting' library can correctly trigger test failures even when the test suite is run in release mode. It is crucial to only link this product to test targets and never to app targets, as doing so will lead to linker errors.

```Swift
.testTarget(
  name: "FeatureTests",
  dependencies: [
    "Feature",
    .product(name: "IssueReportingTestSupport", package: "swift-issue-reporting")
  ]
)
```

--------------------------------

### API Documentation for `IssueReporting/withExpectedIssue`

Source: https://github.com/pointfreeco/xctest-dynamic-overlay/blob/main/Sources/IssueReporting/Documentation.docc/Extensions/withExpectedIssue.md

Provides the signature and an overload for the `withExpectedIssue` function, part of the `IssueReporting` module, including inferred parameter types and descriptions.

```APIDOC
Function: IssueReporting/withExpectedIssue
  Signature: (_:isIntermittent:fileID:filePath:line:column:_:) -> Void
  Parameters:
    _: (Any) - An unnamed parameter, typically a closure or block of code to execute.
    isIntermittent: (Bool) - A boolean indicating if the issue is intermittent.
    fileID: (String) - The file identifier where the issue is reported.
    filePath: (String) - The full path to the file where the issue is reported.
    line: (Int) - The line number in the file where the issue is reported.
    column: (Int) - The column number in the file where the issue is reported.
    _: (Any) - An unnamed parameter, typically a closure or block of code to execute.

Overload:
Function: IssueReporting/withExpectedIssue
  Signature: (_:isIntermittent:isolation:fileID:filePath:line:column:_:) -> Void
  Parameters:
    _: (Any) - An unnamed parameter, typically a closure or block of code to execute.
    isIntermittent: (Bool) - A boolean indicating if the issue is intermittent.
    isolation: (Any) - An isolation context, type unknown from context (e.g., actor isolation).
    fileID: (String) - The file identifier where the issue is reported.
    filePath: (String) - The full path to the file where the issue is reported.
    line: (Int) - The line number in the file where the issue is reported.
    column: (Int) - The column number in the file where the issue is reported.
    _: (Any) - An unnamed parameter, typically a closure or block of code to execute.
```

--------------------------------

### API Documentation for unimplemented Function Overloads (Swift)

Source: https://github.com/pointfreeco/xctest-dynamic-overlay/blob/main/Sources/IssueReporting/Documentation.docc/Extensions/Unimplemented.md

Documents the various overloads of the `unimplemented` function, which is part of the `IssueReporting` module. These functions are typically used in Swift projects to indicate code paths that are not yet implemented, often for testing or placeholder purposes.

```APIDOC
Function: unimplemented
  Purpose: Marks a code path as unimplemented.
  Overloads:
    - unimplemented(_:fileID:filePath:function:line:column:)
    - unimplemented(_:fileID:filePath:function:line:column:)
    - unimplemented(_:throwing:fileID:filePath:function:line:column:)
    - unimplemented(_:throwing:fileID:filePath:function:line:column:)
    - unimplemented(_:placeholder:fileID:filePath:function:line:column:)
    - unimplemented(_:placeholder:fileID:filePath:function:line:column:)
```

--------------------------------

### IssueReporting/IssueReporter API Reference

Source: https://github.com/pointfreeco/xctest-dynamic-overlay/blob/main/Sources/IssueReporting/Documentation.docc/Extensions/IssueReporter.md

Defines the structure and members of the `IssueReporting/IssueReporter` interface, including methods for issue reporting and available reporter types.

```APIDOC
IssueReporting/IssueReporter:
  Topics:
    Conforming to report issues:
      - reportIssue(_:fileID:filePath:line:column:)
      - expectIssue(_:fileID:filePath:line:column:)-8ooca
    Available reporters:
      - runtimeWarning
      - breakpoint
      - fatalError
```

--------------------------------

### Using XCTestDynamicOverlay to Resolve XCTest Import Issues

Source: https://github.com/pointfreeco/xctest-dynamic-overlay/blob/main/Sources/XCTestDynamicOverlay/Documentation.docc/XCTestDynamicOverlay.md

The XCTestDynamicOverlay library provides a workaround for the XCTest import problem. By importing XCTestDynamicOverlay instead of XCTest, the library dynamically loads the XCTFail symbol at runtime, allowing its use from any part of the application or library code without causing compilation or linking errors. This dynamic loading is restricted to DEBUG builds to prevent App Store rejections.

```swift
import XCTestDynamicOverlay // ✅
```

--------------------------------

### API Reference: XCTestDynamicOverlay Unimplemented Dependencies

Source: https://github.com/pointfreeco/xctest-dynamic-overlay/blob/main/Sources/XCTestDynamicOverlay/Documentation.docc/Extensions/Deprecations.md

This section lists deprecated API symbols related to unimplemented dependencies within the XCTestDynamicOverlay framework. These symbols indicate functionality that is no longer supported or recommended for use and should be replaced with current alternatives.

```APIDOC
unimplemented(_:file:fileID:line:)-7w4sd
unimplemented(_:file:fileID:line:)-dh05
unimplemented(_:file:fileID:line:)-74vrh
XCTUnimplemented(_:)-36h59
XCTUnimplemented(_:)-8fvli
XCTUnimplemented(_:file:line:)-7xjl4
XCTUnimplemented(_:file:line:)-69z9t
XCTUnimplemented(_:placeholder:)-9rrxn
XCTUnimplemented(_:placeholder:)-71986
XCTUnimplementedFailure
```

--------------------------------

### API Documentation for UnimplementedFailure Structure (Swift)

Source: https://github.com/pointfreeco/xctest-dynamic-overlay/blob/main/Sources/IssueReporting/Documentation.docc/Extensions/Unimplemented.md

Documents the `UnimplementedFailure` structure, which is likely associated with the `unimplemented` function. This structure probably represents the type of failure or error that occurs when an unimplemented code path is encountered.

```APIDOC
Structure: UnimplementedFailure
  Purpose: Represents a failure state related to unimplemented code.
```

--------------------------------

### IssueReporter.expectIssue Protocol Method Signature

Source: https://github.com/pointfreeco/xctest-dynamic-overlay/blob/main/Sources/IssueReporting/Documentation.docc/Extensions/IssueReporter.expectIssue.md

This entry documents the `expectIssue` method, part of the `IssueReporter` protocol. It is designed to be called when an issue is expected, providing context such as the file, line, and column where the expectation is made. This method is crucial for structured issue reporting within testing frameworks.

```APIDOC
Protocol: IssueReporter
  Method: expectIssue(_:fileID:filePath:line:column:)
    Parameters:
      _ : Any (The issue or message to be reported)
      fileID: String (The name of the file where the issue occurred)
      filePath: String (The full path to the file where the issue occurred)
      line: Int (The line number in the file where the issue occurred)
      column: Int (The column number in the file where the issue occurred)
    Returns: Void (This method does not return a value)
```

--------------------------------

### Report Issue with reportIssue in Swift

Source: https://github.com/pointfreeco/xctest-dynamic-overlay/blob/main/Sources/IssueReporting/Documentation.docc/IssueReporting.md

Demonstrates how to use the `reportIssue` function to flag an issue in Swift code, such as an unexpected empty collection. By default, this triggers an unobtrusive Xcode runtime warning, providing a visible way to identify issues without interrupting app execution.

```swift
guard let lastItem = items.last
else {
  reportIssue("'items' should never be empty.")
  return 
}
// ...
```

--------------------------------

### IssueReporting.reportIssue API Definition

Source: https://github.com/pointfreeco/xctest-dynamic-overlay/blob/main/Sources/IssueReporting/Documentation.docc/Extensions/reportIssue.md

Defines the `reportIssue` function, which is used to report errors or issues within an application, capturing precise source code location details like file ID, file path, line, and column numbers.

```APIDOC
Function: IssueReporting.reportIssue(_:_:fileID:filePath:line:column:)
  Description: Reports an issue with detailed source location information.
  Parameters:
    - name: (unnamed parameter 1)
      description: The primary issue or message to be reported.
      type: Any (inferred)
    - name: (unnamed parameter 2)
      description: Additional context or a closure providing further details for the report.
      type: Any (inferred)
    - name: fileID
      description: A unique identifier for the source file where the issue occurred.
      type: String
    - name: filePath
      description: The full path to the source file where the issue occurred.
      type: String
    - name: line
      description: The line number within the source file where the issue occurred.
      type: Int
    - name: column
      description: The column number within the line in the source file where the issue occurred.
      type: Int
  Returns: Void
```

--------------------------------

### Report Issue with `reportIssue` Function in Swift

Source: https://github.com/pointfreeco/xctest-dynamic-overlay/blob/main/README.md

Demonstrates the basic usage of the `reportIssue` function to flag an issue in Swift code, such as an unexpected empty collection. This function, by default, triggers an unobtrusive purple runtime warning in Xcode, providing visual feedback without stopping the app's execution.

```Swift
guard let lastItem = items.last
else {
  reportIssue("'items' should never be empty.")
  return 
}
…
```

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