dev/protos/firestore_proto_api.js
function FieldFilter(properties) {
                        if (properties)
                            for (var keys = Object.keys(properties), i = 0; i < keys.length; ++i)
                                if (properties[keys[i]] != null)
                                    this[keys[i]] = properties[keys[i]];
                    }
function FieldFilter(properties) {
                        if (properties)
                            for (var keys = Object.keys(properties), i = 0; i < keys.length; ++i)
                                if (properties[keys[i]] != null)
                                    this[keys[i]] = properties[keys[i]];
                    }
function FieldFilter ( properties ) { if ( properties ) for ( var keys = Object . keys ( properties ) , i = 0 ; i < keys . length ; ++ i ) if ( properties [ keys [ i ] ] != null ) this [ keys [ i ] ] = properties [ keys [ i ] ] ; }
Properties of a FieldFilter.
@memberof google.firestore.v1.StructuredQuery
@interface IFieldFilter
@property {google.firestore.v1.StructuredQuery.IFieldReference|null} [field] FieldFilter field
@property {google.firestore.v1.StructuredQuery.FieldFilter.Operator|null} [op] FieldFilter op
@property {google.firestore.v1.IValue|null} [value] FieldFilter value
 
Constructs a new FieldFilter.
@memberof google.firestore.v1.StructuredQuery
@classdesc Represents a FieldFilter.
@implements IFieldFilter
@constructor
@param {google.firestore.v1.StructuredQuery.IFieldFilter=} [properties] Properties to set
Properties of a FieldFilter .