import Value from '@alirya/value/value';
import Wrapper from './wrapper';
export interface OnceValue<Type = unknown> extends Value<Type> {
    once?: boolean;
}
export default class Once<Key, Value extends OnceValue = OnceValue> extends Wrapper<Map<Key, Value>> {
    protected deleteOnce(key: Key): void;
    get(key: Key): Value | undefined;
    set(value: Key, config: Value): this;
    [Symbol.iterator](): IterableIterator<[Key, Value]>;
    entries(): IterableIterator<[Key, Value]>;
    forEach(callback: (value: Value, key: Key, map: Once<Key, Value>) => void, thisArg?: any): void;
    values(): IterableIterator<Value>;
}
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