import { DateTimeString } from './opaqueTypes';
export interface IJSONTransformer<T> {
    from(value?: string): T | undefined;
    to(value?: T | null): string | undefined;
}
export interface IDateTimeTransformer {
    from(value?: Date): DateTimeString | undefined;
    to(value?: string): string | undefined;
}
export declare class JsonTransformer<T> implements IJSONTransformer<T> {
    from(value?: string): T | undefined;
    to(value?: T | null): string | undefined;
}
//# sourceMappingURL=transformers.d.ts.map