import { HasTag, PrettyType, SomeSpec, Spec, SpecKind, SpecSuccess, SpecTag, SpectypesError } from './types.js';
declare type DeepWritable<T> = PrettyType<{
    -readonly [P in keyof T]: DeepWritable<T[P]>;
}>;
/** Creates an empty validator that removes `readonly` modifiers from the result of validation */
export declare const writable: <ItemSpec extends Spec = SomeSpec>(spec: HasTag<ItemSpec, 'filter'> extends true ? SpectypesError<'filter', 'writable'> : ItemSpec) => Spec<SpecTag<ItemSpec>, SpecKind<ItemSpec>, DeepWritable<SpecSuccess<ItemSpec>>>;
export {};