export interface ICSSDeclaration<KEY extends string = string, VALUE = unknown, CSSDECLARATION extends string = string, CSSVARIABLE extends string = string> {
    readonly Key: KEY;
    readonly Value: VALUE;
    ToCSSDeclaration(options?: {
        Semicolon?: boolean;
    }): CSSDECLARATION | string;
    ToCSSVariable(): CSSVARIABLE | string;
    toString(): string;
    toJSON(): Record<string, unknown>;
}