import { Getter, Setter, Atom, WritableAtom, WithInitialValue, PrimitiveAtom } from './types';
export declare function atom<Value, Update>(read: (get: Getter) => Value | Promise<Value>, write: (get: Getter, set: Setter, update: Update) => void | Promise<void>): WritableAtom<Value, Update>;
export declare function atom<Value, Update>(read: Function, write: (get: Getter, set: Setter, update: Update) => void | Promise<void>): never;
export declare function atom<Value, Update>(read: Value, write: (get: Getter, set: Setter, update: Update) => void | Promise<void>): WritableAtom<Value, Update> & WithInitialValue<Value>;
export declare function atom<Value, Update extends never = never>(read: (get: Getter) => Value | Promise<Value>): Atom<Value>;
export declare function atom<Value, Update>(read: Function): never;
export declare function atom<Value, Update extends never = never>(initialValue: Value): PrimitiveAtom<Value> & WithInitialValue<Value>;