import { Identifier, Projection, Query, Update } from './CollectionTypes';
/**
 * A collection of data.
 */
export default interface Collection<T> {
    /**
     * Insert the document in database.
     *
     * @param newDoc - Document to insert.
     */
    insert(newDoc: T): Promise<Identifier & T>;
    /**
     * Count the documents in database.
     *
     * @param query - Selection query.
     */
    count(query: Query<Identifier & T>): Promise<number>;
    /**
     * Find documents in database.
     *
     * @param query - Selection query.
     * @param projection - Fields to select.
     */
    find(query: Query<Identifier & T>, projection?: Projection<Identifier & T>): Promise<Array<Identifier & T>>;
    /**
     * Find a single document in database.
     *
     * @param query - Selection query.
     * @param projection - Fields to select.
     */
    findOne(query: Query<Identifier & T>, projection?: Projection<Identifier & T>): Promise<(Identifier & T) | undefined>;
    /**
     * Update a document in database.
     *
     * @param query - Selection query.
     * @param updateQuery - Update query.
     * @param upsert - True to insert if no row selected (default is false).
     */
    update(query: Query<Identifier & T>, updateQuery: Update<T>, upsert?: boolean): Promise<number>;
    /**
     * Remove a document in database.
     *
     * @param query - Selection query.
     */
    remove(query: Query<Identifier & T>): Promise<number>;
}