/**
 * @see https://github.com/trpc/trpc/blob/next/packages/server/src/unstable-core-do-not-import/transformer.ts
 */
/**
 * Data-transformers share the same interface, but have different semantics depending
 * on where they are executed during a request.
 */
export type DataTransformer = {
    /**
     * Convert a raw value from the program into a JSON-serializable value.
     *
     * The raw JSON value needs to be a valid input into {@link JSON.stringify}.
     */
    serialize: (object: any) => any;
    /**
     * Take a raw JSON value and convert it into the desired value to be used in the program.
     *
     * The raw JSON value can be anything returned from {@link JSON.parse}.
     */
    deserialize: (object: any) => any;
};
interface InputDataTransformer extends DataTransformer {
    /**
     * This function runs **on the client** before sending the data to the server.
     *
     * This should return a JSON-serializable value, e.g. a string.
     */
    serialize: (object: any) => any;
    /**
     * This function runs **on the server** to transform the data before it is passed to the resolver
     */
    deserialize: (object: any) => any;
}
interface OutputDataTransformer extends DataTransformer {
    /**
     * This function runs **on the server** before sending the data to the client.
     *
     * This should return a JSON-serializable value, e.g. a string.
     */
    serialize: (object: any) => any;
    /**
     * This function runs **only on the client** to transform the data sent from the server.
     */
    deserialize: (object: any) => any;
}
export interface CombinedDataTransformer {
    /**
     * Specify how the data sent from the client to the server should be transformed.
     */
    input: InputDataTransformer;
    /**
     * Specify how the data sent from the server to the client should be transformed.
     */
    output: OutputDataTransformer;
}
export type DataTransformerOptions = CombinedDataTransformer | DataTransformer;
export declare function getDataTransformer(transformer?: DataTransformerOptions): CombinedDataTransformer;
export {};
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