Suppressors

The Suppressors are a tool that you can use to customize the reports of detekt. They allow you to (surprise) suppress some issues detected by some rules, and they can be applied to any rule.

An example is the annotation suppressor. It works like this. First, you need to configure the tag ignoreAnnotated with a list of annotations, you want the suppressor to consider. Example:

UnusedPrivateMember:
  active: true
  ignoreAnnotated:
    - 'Preview'

Now, if an issue is found under a code that is annotated with @Preview that issue will be suppressed. This example is really handy if you use Jetpack Compose, for example.

Available Suppressors

Annotation Suppressor

Suppress all the issues that are raised under a code that is annotated with the annotations defined at ignoreAnnotated.

Config tag

ignoreAnnotated: List<String>: The annotations can be defined just by its name or with its fully qualified name. If you don't run detekt with type solving the fully qualified name does not work.

Function Suppressor

Suppress any issue raised under a function definition that matches the signatures defined at ignoreFunction.

Note: this Suppressor doesn't suppress issues found when you call these functions. It just suppresses the ones in the function definition.

Config tag:

ignoreFunction: List<String>: The signature of the function. You can ignore all the overloads of a function defining just its name like java.time.LocalDate.now or you can specify the parameters to only suppress one: java.time.LocalDate(java.time.Clock).

Note: you need to write all the types with fully qualified names e.g. org.example.foo(kotlin.String). It is important to add kotlin.String. Just adding String will not work.