function mergeClassNames()

Combines two className values

Signature:

export declare function mergeClassNames<BaseState extends AnyObject, ExtensionState extends AnyObject, Base extends ClassName<BaseState>, Extension extends ClassName<ExtensionState>, R extends (S extends EmptyObject ? never[] : IncompatibleKeys<S> extends never ? never[] : [Record<IncompatibleKeys<S>, never>]), B extends ClassName<any> = Base, E extends ClassName<any> = Extension, BB extends ClassName<any> = B, EE extends ClassName<any> = E, S extends AnyObject = CombineStates<ExtractState<B>, ExtractState<E>>>(base: B, extension: E, ...__INFERRED_STATES_MISMATCH_GUARD__: R): CombineClassNameType<DefineClassNameType<S, BB>, DefineClassNameType<S, EE>>;

Parameters

Parameter	Type	Description
base	B	Host or nested class name
extension	E	Host or nested class name
__INFERRED_STATES_MISMATCH_GUARD__	R

**Returns:**

CombineClassNameType<S, EE>>