import { GetDoc, TransactionSet, TransactionUpdate, TransactionUpdateNoFlatten, TransactionDelete } from './operations';
import { Firestore, TransactionOptions } from './alias';
/**
 * A reference to a transaction.
 *
 * The `Transaction` object passed to a transaction's `updateFunction` provides
 * the methods to read and write data within the transaction context. See
 * {@link runTransaction}.
 */
export interface Transaction {
    /**
     * Reads the document referenced by the provided {@link DocumentReference}.
     *
     * @param documentRef - A reference to the document to be read.
     * @returns A `DocumentSnapshot` with the read data.
     */
    get: GetDoc;
    /**
     * Writes to the document referred to by the provided {@link
     * DocumentReference}. If the document does not exist yet, it will be created.
     * If you provide `merge` or `mergeFields`, the provided data can be merged
     * into an existing document.
     *
     * @param documentRef - A reference to the document to be set.
     * @param data - An object of the fields and values for the document.
     * @param options - An object to configure the set behavior.
     * @throws Error - If the provided input is not a valid Firestore document.
     * @returns This `Transaction` instance. Used for chaining method calls.
     */
    set: TransactionSet;
    /**
     * Updates fields in the document referred to by the provided {@link
         * DocumentReference}. The update will fail if applied to a document that does
         * not exist.
         *
         * @param documentRef - A reference to the document to be updated.
         * @param data - An object containing the fields and values with which to
    update the document. Fields can contain dots to reference nested fields
    within the document.
         * @throws Error - If the provided input is not valid Firestore data.
         * @returns This `Transaction` instance. Used for chaining method calls.
         */
    update: TransactionUpdate;
    /**
     * Updates fields in the document referred to by the provided {@link
        * DocumentReference}. The update will fail if applied to a document that does
        * not exist.
        *
        * @param documentRef - A reference to the document to be updated.
        * @param data - An object containing the fields and values with which to
   update the document. Fields can contain dots to reference nested fields
   within the document.
        * @throws Error - If the provided input is not valid Firestore data.
        * @returns This `Transaction` instance. Used for chaining method calls.
        */
    updateNoFlatten: TransactionUpdateNoFlatten;
    /**
     * Deletes the document referred to by the provided {@link DocumentReference}.
     *
     * @param documentRef - A reference to the document to be deleted.
     * @returns This `Transaction` instance. Used for chaining method calls.
     */
    delete: TransactionDelete;
}
export type RunTransaction = {
    <T>(firestore: Firestore, updateFunction: (transaction: Transaction) => Promise<T>, options?: TransactionOptions): Promise<T>;
    <T>(updateFunction: (transaction: Transaction) => Promise<T>, options?: TransactionOptions): Promise<T>;
};