/**
 * Implementation of https://docs.aws.amazon.com/AmazonCloudWatch/latest/monitoring/Statistics-definitions.html
 */
import type { Statistic } from '../metric-types';
import { Stats } from '../stats';
export type ParsedStatistic = SimpleStatistic | UnparseableStatistic | ExtendedStatisticWithoutParameters | ExtendedStatisticWithThreshold | ExtendedStatisticWithRange;
export interface SimpleStatistic {
    type: 'simple';
    statistic: typeof Stats.AVERAGE | typeof Stats.MINIMUM | typeof Stats.MAXIMUM | typeof Stats.SAMPLE_COUNT | typeof Stats.SUM;
}
export interface UnparseableStatistic {
    type: 'unparseable';
    originalInput: string;
}
export interface ExtendedStatisticWithoutParameters {
    type: 'extended';
    statistic: 'IQM';
}
export interface ExtendedStatisticWithThreshold {
    type: 'single';
    statPrefix: 'p' | 'tm' | 'wm' | 'tc' | 'ts';
    value: number;
    originalInput: string;
}
export interface ExtendedStatisticWithRange {
    type: 'range';
    statPrefix: 'PR' | 'TM' | 'WM' | 'TC' | 'TS';
    originalInput: string;
    isPercent: boolean;
    lower?: number;
    upper?: number;
    asSingleStatStr?: string;
}
export declare function singleStatisticToString(parsed: ExtendedStatisticWithThreshold): string;
export declare function pairStatisticToString(parsed: ExtendedStatisticWithRange): string;
/**
 * Parse a statistic, returning the type of metric that was used
 */
export declare function parseStatistic(stat: string): ParsedStatistic;
export declare function normalizeStatistic(parsed: ReturnType<typeof parseStatistic>): string;
export declare function normalizeRawStringStatistic(stat: string): string;
export interface StatisticFields {
    readonly statistic?: Statistic;
    readonly extendedStatistic?: string;
}
export declare function parseStatisticToFields(statistic: string): StatisticFields;