declare type ClassName = string; declare type Modifiers = { [key: string]: string | number | boolean | null | undefined; }; declare type CSSModule = { [key: string]: ClassName; }; declare type ArrayOrVarArgs = T[] | T[][]; declare type BEM = (elementName: ClassName, modifiers?: Modifiers) => ClassName; export { ClassName, Modifiers, CSSModule, ArrayOrVarArgs, BEM };