import { TransactionSet, TransactionUpdate, TransactionUpdateNoFlatten, TransactionDelete, TransactionCreate } from './operations';
import { DocumentReference, Query } from './refs';
import { DocumentSnapshot, QuerySnapshot } from './snapshot';
import { MetaType } from './metaTypeCreator';
import { Firestore, ReadWriteTransactionOptions, ReadOnlyTransactionOptions } from './alias';
/**
 * An options object that can be used to configure the behavior of `getAll()`
 * calls. By providing a `fieldMask`, these calls can be configured to only
 * return a subset of fields.
 */
export interface ReadOptions<T extends MetaType> {
    /**
     * Specifies the set of fields to return and reduces the amount of data
     * transmitted by the backend.
     *
     * Adding a field mask does not filter results. Documents do not need to
     * contain values for all the fields in the mask to be part of the result
     * set.
     */
    readonly fieldMask?: (keyof T['writeFlatten'])[];
}
export interface Transaction {
    /**
     * Retrieves a query result. Holds a pessimistic lock on all returned
     * documents.
     *
     * @param query A query to execute.
     * @return A QuerySnapshot for the retrieved data.
     */
    get<T extends MetaType>(reference: Query<T>): Promise<QuerySnapshot<T>>;
    /**
     * Reads the document referenced by the provided `DocumentReference`.
     *
     * @param documentRef - A reference to the document to be read.
     * @returns A `DocumentSnapshot` with the read data.
     */
    get<T extends MetaType>(reference: DocumentReference<T>): Promise<DocumentSnapshot<T>>;
    /**
     * Retrieves multiple documents from Firestore. Holds a pessimistic lock on
     * all returned documents.
     * @param {Array.<DocumentReference|ReadOptions>} documentRefs
     * The `DocumentReferences` to receive
     * @param {ReadOptions|undefined} readOptions
     * An options object that can be used to configure the behavior of `getAll()`
     * calls. By providing a `fieldMask`, these calls can be configured to only
     * return a subset of fields.
     *
     * Specifies the set of fields to return and reduces the amount of data
     * transmitted by the backend.
     *
     * Adding a field mask does not filter results. Documents do not need to
     * contain values for all the fields in the mask to be part of the result
     * set.
     * @return A Promise that resolves with an array of resulting document
     * snapshots.
     */
    getAll<T extends MetaType>(documentRefs: DocumentReference<T>[], readOptions?: ReadOptions<T>): Promise<Array<DocumentSnapshot<T>>>;
    /**
     * Create the document referred to by the provided `DocumentReference`.
     * The operation will fail the transaction if a document exists at the
     * specified location.
     *
     * @param documentRef A reference to the document to be create.
     * @param data The object data to serialize as the document.
     * @throws Error If the provided input is not a valid Firestore document.
     * @return This `Transaction` instance. Used for chaining method calls.
     */
    create: TransactionCreate;
    /**
     * Writes to the document referred to by the provided `DocumentReference`.
     * If the document does not exist yet, it will be created. If you pass
     * `SetOptions`, the provided data can be merged into the 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.
     * @param  options.merge - If true, set() merges the values specified in its
     * data argument. Fields omitted from this set() call remain untouched.
     * @param options.mergeFields - If provided, set() only replaces the
     * specified field paths. Any field path that is not specified is ignored
     * and remains untouched.
     * @throws Error If the provided input is not a valid Firestore document.
     * @return This `Transaction` instance. Used for chaining method calls.
     */
    set: TransactionSet;
    /**
     * Updates fields in the document referred to by the provided `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 `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 `DocumentReference`.
     *
     * @param documentRef A reference to the document to be deleted.
     * @param precondition A Precondition to enforce for this delete.
     * @return This `Transaction` instance. Used for chaining method calls.
     */
    delete: TransactionDelete;
}
export type RunTransaction = {
    <T>(firestore: Firestore, updateFunction: (transaction: Transaction) => Promise<T>, transactionOptions?: ReadWriteTransactionOptions | ReadOnlyTransactionOptions): Promise<T>;
    <T>(updateFunction: (transaction: Transaction) => Promise<T>, transactionOptions?: ReadWriteTransactionOptions | ReadOnlyTransactionOptions): Promise<T>;
};