import { Variable } from '@mtna/pojo-consumer-ts';
import { VariableSummary } from '@mtna/variable-service-core-ts';
import { DatumOutputType, TabulationClassification, TabulationDatum } from '@rds/rds-base-ts';
export declare type DatumValueType = 'STRING' | 'NUMBER' | 'CODE';
/**
 * Determines whether the specified Datum is unique inside the given Datum array.
 * @param datum Datum to check for uniqueness
 * @param allDatum Datum array to search
 * @returns whether the datum is unique in the given array of datum
 */
export declare function isDatumUnique(datum: TabulationDatum, allDatum: TabulationDatum[]): boolean;
/**
 * Get the value from the datum. If the value is an object the optional `prop` can be specified.
 * @param d Datum to get the value
 * @param prop optional object property to return
 * @returns value of a datum
 */
export declare function getDatumValue<OT extends DatumOutputType = DatumOutputType>(d: TabulationDatum<OT> | null | undefined, variables: Array<Variable | VariableSummary | null>, classifications: {
    [id: string]: TabulationClassification;
}, ...props: string[]): DatumOutputType | null;
/**
 * Determines if the 'value' & 'variable' between 2 datum are the same.
 * @param d1 Datum
 * @param d2 Datum
 * @returns whether the datum are equal
 */
export declare function isMatchingDatum(d1: TabulationDatum, d2: TabulationDatum): boolean;