import type { Key, Range } from './common.js';
/**
 * A map that counts how many times it sees a key. Once 0 is reached,  that key is removed from the map.
 * Iterating over the map will only return keys that have a count over 0.
 *
 * Keys are stored in sorted order
 */
interface AztecBaseCounter<K extends Key = Key> {
    /**
     * Resets the count of the given key to the given value.
     * @param key - The key to reset
     * @param value - The value to reset the key to
     */
    set(key: K, value: number): Promise<void>;
    /**
     * Updates the count of the given key by the given delta. This can be used to increment or decrement the count.
     * Once a key's count reaches 0, it is removed from the map.
     *
     * @param key - The key to update
     * @param delta - The amount to modify the key by
     */
    update(key: K, delta: number): Promise<void>;
}
export interface AztecCounter<K extends Key = Key> extends AztecBaseCounter<K> {
    /**
     * Gets the current count.
     * @param key - The key to get the count of
     */
    get(key: K): number;
    /**
     * Returns keys in the map in sorted order. Only returns keys that have been seen at least once.
     * @param range - The range of keys to iterate over
     */
    keys(range: Range<K>): IterableIterator<K>;
    /**
     * Returns keys and their counts in the map sorted by the key. Only returns keys that have been seen at least once.
     * @param range - The range of keys to iterate over
     */
    entries(range: Range<K>): IterableIterator<[K, number]>;
}
export interface AztecAsyncCounter<K extends Key = Key> extends AztecBaseCounter<K> {
    /**
     * Gets the current count.
     * @param key - The key to get the count of
     */
    getAsync(key: K): Promise<number>;
    /**
     * Returns keys in the map in sorted order. Only returns keys that have been seen at least once.
     * @param range - The range of keys to iterate over
     */
    keysAsync(range: Range<K>): AsyncIterableIterator<K>;
    /**
     * Returns keys and their counts in the map sorted by the key. Only returns keys that have been seen at least once.
     * @param range - The range of keys to iterate over
     */
    entriesAsync(range: Range<K>): AsyncIterableIterator<[K, number]>;
}
export {};
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