DBCoreKeyRange
export interface DBCoreKeyRange {
readonly type: DBCoreRangeType;
readonly lower: any;
readonly lowerOpen?: boolean;
readonly upper: any;
readonly upperOpen?: boolean;
}export interface DBCoreKeyRange {
readonly type: DBCoreRangeType;
readonly lower: any;
readonly lowerOpen?: boolean;
readonly upper: any;
readonly upperOpen?: boolean;
}