Valid IBInspectable

@IBInspectable should be applied to variables only, have its type explicit and be of a supported type

• Identifier: valid_ibinspectable
• Enabled by default: Yes
• Supports autocorrection: No
• Kind: lint
• Analyzer rule: No
• Minimum Swift compiler version: 5.0.0
• Default configuration:

  Key	Value
  severity	warning

Non Triggering Examples

class Foo {
  @IBInspectable private var x: Int
}

class Foo {
  @IBInspectable private var x: String?
}

class Foo {
  @IBInspectable private var x: String!
}

class Foo {
  @IBInspectable private var count: Int = 0
}

class Foo {
  private var notInspectable = 0
}

class Foo {
  private let notInspectable: Int
}

class Foo {
  private let notInspectable: UInt8
}

extension Foo {
    @IBInspectable var color: UIColor {
        set {
            self.bar.textColor = newValue
        }

        get {
            return self.bar.textColor
        }
    }
}

class Foo {
    @IBInspectable var borderColor: UIColor? = nil {
        didSet {
            updateAppearance()
        }
    }
}

Triggering Examples

class Foo {
  @IBInspectable private ↓let count: Int
}

class Foo {
  @IBInspectable private ↓var insets: UIEdgeInsets
}

class Foo {
  @IBInspectable private ↓var count = 0
}

class Foo {
  @IBInspectable private ↓var count: Int?
}

class Foo {
  @IBInspectable private ↓var count: Int!
}

class Foo {
  @IBInspectable private ↓var count: Optional<Int>
}

class Foo {
  @IBInspectable private ↓var x: Optional<String>
}