Data classes are bad for binary compatibility in public APIs. Avoid using them. This rule is aimed at library maintainers. If you are developing a final application you can ignore this issue. More info: https://jakewharton.com/public-api-challenges-in-kotlin/

Noncompliant Code

data class C(val a: String) // violation: public data class

Compliant Code

internal data class C(val a: String)

Options

• excludes (default: ['**'])

  path filter

• ignorePackages (default: ['*.internal', '*.internal.*'])

  ignores classes in the specified packages