export declare type Primitive = string | number | boolean;
export declare function isPrimitive(input: any): input is Primitive;
export declare type RXObjectAttributes = {
    [attributeName: string]: Primitive | Primitive[] | null | undefined;
};
export declare type ToRXObjectAttributes<T> = {
    [Property in keyof T]: T[Property] extends Primitive | Primitive[] | null | undefined ? T[Property] : never;
};