export declare namespace plurals {
    interface Rule {
        readonly languages: string[];
        readonly forms: ("default" | Form)[];
    }
    interface Form {
        readonly is?: FormMatcher;
        readonly modE1?: FormMatcher;
        readonly modE2?: FormMatcher;
        readonly modE6?: FormMatcher;
        readonly exclude?: FormMatcher;
    }
    type FormMatcher = (number | [number, number])[];
    function getRule(language: string): Rule | undefined;
}