问.set / .update集合或文档，但仅限于本地？

EN

/**
 * This update should only happen locally / offline in order to update state of components
 * that are listening to changes in this document
*/
myDocumentRef.update({ name: 'newname' });

/**
 * Then cloud function is called that performs validation and if correct
 * updates document with new data (same as one we set offline above).
 * Once that is done listening components will receive new data. If unsuccessful
 * we would set document to old data (again offline) and show error.
*/
await myCloudFunction();