import { DataItem } from '../../../../shared-logic/src/ChartsV2/types';
import { DataType } from '../../../../shared-logic/src/Field/types';
interface flattenDataArgs {
    data: Array<{
        [keyId: string]: DataItem;
    }>;
    xScaleKey: string;
    xScaleDataType: DataType;
    yKeys: string[];
}
export declare const flattenData: ({ data, xScaleKey, xScaleDataType, yKeys, }: flattenDataArgs) => {
    [keyId: string]: string | number | Date | null;
}[];
export {};
