Untyped Error in Catch

Catch statements should not declare error variables without type casting

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

  Key	Value
  severity	warning

Non Triggering Examples

do {
  try foo()
} catch {}

do {
  try foo()
} catch Error.invalidOperation {
} catch {}

do {
  try foo()
} catch let error as MyError {
} catch {}

do {
  try foo()
} catch var error as MyError {
} catch {}

do {
    try something()
} catch let e where e.code == .fileError {
    // can be ignored
} catch {
    print(error)
}

Triggering Examples

do {
  try foo()
} ↓catch var error {}

do {
  try foo()
} ↓catch let error {}

do {
  try foo()
} ↓catch let someError {}

do {
  try foo()
} ↓catch var someError {}

do {
  try foo()
} ↓catch let e {}

do {
  try foo()
} ↓catch(let error) {}

do {
  try foo()
} ↓catch (let error) {}