@firebase/firestore
Version:
The Cloud Firestore component of the Firebase JS SDK.
82 lines (81 loc) • 3.87 kB
TypeScript
/**
* @license
* Copyright 2020 Google LLC
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
import { FieldValue } from './field_value';
import { VectorValue } from './vector_value';
/**
* Returns a sentinel for use with {@link @firebase/firestore/lite#(updateDoc:1)} or
* {@link @firebase/firestore/lite#(setDoc:1)} with `{merge: true}` to mark a field for deletion.
*/
export declare function deleteField(): FieldValue;
/**
* Returns a sentinel used with {@link @firebase/firestore/lite#(setDoc:1)} or {@link @firebase/firestore/lite#(updateDoc:1)} to
* include a server-generated timestamp in the written data.
*/
export declare function serverTimestamp(): FieldValue;
/**
* Returns a special value that can be used with {@link @firebase/firestore/lite#(setDoc:1)} or {@link
* @firebase/firestore/lite#(updateDoc:1)} that tells the server to union the given elements with any array
* value that already exists on the server. Each specified element that doesn't
* already exist in the array will be added to the end. If the field being
* modified is not already an array it will be overwritten with an array
* containing exactly the specified elements.
*
* @param elements - The elements to union into the array.
* @returns The `FieldValue` sentinel for use in a call to `setDoc()` or
* `updateDoc()`.
*/
export declare function arrayUnion(...elements: unknown[]): FieldValue;
/**
* Returns a special value that can be used with {@link (setDoc:1)} or {@link
* updateDoc:1} that tells the server to remove the given elements from any
* array value that already exists on the server. All instances of each element
* specified will be removed from the array. If the field being modified is not
* already an array it will be overwritten with an empty array.
*
* @param elements - The elements to remove from the array.
* @returns The `FieldValue` sentinel for use in a call to `setDoc()` or
* `updateDoc()`
*/
export declare function arrayRemove(...elements: unknown[]): FieldValue;
/**
* Returns a special value that can be used with {@link @firebase/firestore/lite#(setDoc:1)} or {@link
* @firebase/firestore/lite#(updateDoc:1)} that tells the server to increment the field's current value by
* the given value.
*
* If either the operand or the current field value uses floating point
* precision, all arithmetic follows IEEE 754 semantics. If both values are
* integers, values outside of JavaScript's safe number range
* (`Number.MIN_SAFE_INTEGER` to `Number.MAX_SAFE_INTEGER`) are also subject to
* precision loss. Furthermore, once processed by the Firestore backend, all
* integer operations are capped between -2^63 and 2^63-1.
*
* If the current field value is not of type `number`, or if the field does not
* yet exist, the transformation sets the field to the given value.
*
* @param n - The value to increment by.
* @returns The `FieldValue` sentinel for use in a call to `setDoc()` or
* `updateDoc()`
*/
export declare function increment(n: number): FieldValue;
/**
* Creates a new `VectorValue` constructed with a copy of the given array of numbers.
*
* @param values - Create a `VectorValue` instance with a copy of this array of numbers.
*
* @returns A new `VectorValue` constructed with a copy of the given array of numbers.
*/
export declare function vector(values?: number[]): VectorValue;