import { AnySchema, ErrorMap, AnyORPCError, AnyORPCErrorJSON, InferSchemaInput, InferSchemaOutput, ORPCError, ORPCErrorJSON, ORPCErrorCode, ORPCErrorFromErrorMap, ThrowableError, Context, Lazyable, Procedure, ProcedureClientOptions } from '@orpc/server';
import { MaybeOptionalOptions } from '@orpc/shared';

type ServerFunctionORPCErrorJSON<T> = T extends ORPCError<infer U, infer V> ? ORPCErrorJSON<U, V> & {
    inferable: true;
} : ORPCErrorJSON<ORPCErrorCode, unknown> & {
    inferable: false;
};
type ServerFunctionError<T extends AnyORPCErrorJSON> = T extends ORPCErrorJSON<infer U, infer V> & {
    inferable: true;
} ? ORPCError<U, V> : ThrowableError;
type ServerFunctionRest<TInput> = [input: TInput] | (undefined extends TInput ? [input?: TInput] : [input: TInput]);
type ServerFunctionResult<TOutput, TError> = [error: null, data: TOutput] | [error: TError, data: undefined];
interface ServerFunction<TInput, TOutput, TError extends AnyORPCErrorJSON> {
    (...rest: ServerFunctionRest<TInput>): Promise<ServerFunctionResult<TOutput, TError>>;
}
type ProcedureServerFunction<TInputSchema extends AnySchema, TOutputSchema extends AnySchema, TErrorMap extends ErrorMap, TReturnedORPCError extends AnyORPCError> = ServerFunction<InferSchemaInput<TInputSchema>, InferSchemaOutput<TOutputSchema>, ServerFunctionORPCErrorJSON<ORPCErrorFromErrorMap<TErrorMap> | TReturnedORPCError | ThrowableError>>;
declare function createServerFunction<TInitialContext extends Context, TInputSchema extends AnySchema, TOutputSchema extends AnySchema, TErrorMap extends ErrorMap, TReturnedError extends AnyORPCError>(procedure: Lazyable<Procedure<TInitialContext, any, TInputSchema, TOutputSchema, TErrorMap, TReturnedError>>, ...rest: MaybeOptionalOptions<ProcedureClientOptions<TInitialContext, TOutputSchema, TErrorMap, TReturnedError, object>>): ProcedureServerFunction<TInputSchema, TOutputSchema, TErrorMap, TReturnedError>;

export { createServerFunction as e };
export type { ProcedureServerFunction as P, ServerFunction as S, ServerFunctionError as a, ServerFunctionORPCErrorJSON as b, ServerFunctionRest as c, ServerFunctionResult as d };