import { StandardSchemaV1 } from '@standard-schema/spec';
import { MaybePromise } from './types.js';
import 'react';

declare class ValidationError<TData = any> extends Error {
    name: 'ValidationError';
    issues: readonly StandardSchemaV1.Issue[];
    data: TData;
    constructor(result: StandardSchemaV1.FailureResult, data: TData);
}

type ValidationFunctionSync<TInput = any, TOutput = TInput> = (data: TInput) => TOutput;
type ValidationFunction<TInput = any, TOutput = TInput> = (data: TInput) => MaybePromise<TOutput>;
type ValidatorSync<TInput = any, TOutput = TInput> = ValidationFunctionSync<TInput, TOutput> | StandardSchemaV1<TInput, TOutput>;
type Validator<TInput = any, TOutput = TInput> = ValidationFunction<TInput, TOutput> | StandardSchemaV1<TInput, TOutput>;
type ValidatorInput<TValidator extends Validator> = Awaited<TValidator extends ValidationFunction ? Parameters<TValidator>[0] : TValidator extends StandardSchemaV1 ? StandardSchemaV1.InferInput<TValidator> : never>;
type ValidatorOutput<TValidator extends Validator> = Awaited<TValidator extends ValidationFunction ? ReturnType<TValidator> : TValidator extends StandardSchemaV1 ? StandardSchemaV1.InferOutput<TValidator> : never>;
declare function validateSync<TValidator extends ValidatorSync>(fnOrSchema: TValidator, data: ValidatorInput<TValidator>): ValidatorOutput<TValidator>;
declare function validateAsync<TValidator extends Validator>(fnOrSchema: TValidator, data: ValidatorInput<TValidator>): Promise<ValidatorOutput<TValidator>>;

export { ValidationError as SchemaValidationError, type Validator, type ValidatorInput, type ValidatorOutput, type ValidatorSync, validateAsync, validateSync };