import type { PlainObject } from './helpers/isPlainObject.js';
import type { KeysParam, KeyUnion, SetToNever } from './helpers/utility-types.js';
import tspo from './tspo.js';
/******************************************************************************
                                   Types
******************************************************************************/
type CollapseType<T> = {
    [K in keyof T]: T[K];
} & {};
type Append = <T extends PlainObject, U extends PlainObject>(obj: T, addOn: U) => asserts obj is CollapseType<T & U>;
type AddEntry = <T extends PlainObject, K extends string, V>(obj: T, entry: [K, V]) => asserts obj is CollapseType<T & Record<K, V>>;
type Remove = <T extends PlainObject, K extends KeysParam<T>>(obj: T, keys: K) => asserts obj is CollapseType<SetToNever<T, KeyUnion<T, K>>>;
/******************************************************************************
                                  Constants
******************************************************************************/
declare const typedTspo: Readonly<typeof tspo> & {
    readonly append: Append;
    readonly addEntry: AddEntry;
    readonly remove: Remove;
};
/******************************************************************************
                                   Export
******************************************************************************/
export { type OmitNever } from './helpers/utility-types.js';
export default typedTspo;