import { Read, Write, Atom, WritableAtom, WithInitialValue, PrimitiveAtom, NonFunction } from './types';
export declare function atom<Value, Update>(read: Read<Value>, write: Write<Update>): WritableAtom<Value, Update>;
export declare function atom<Value, Update>(read: NonFunction<Value>, write: Write<Update>): WritableAtom<Value, Update> & WithInitialValue<Value>;
export declare function atom<Value>(read: Read<Value>): Atom<Value>;
export declare function atom<Value>(initialValue: NonFunction<Value>): PrimitiveAtom<Value> & WithInitialValue<Value>;