export declare const findClosestBy: (array: any[], closestTo: number, by: (candidate: any) => number) => any;
export declare function findClosestNumberIndex(numbers: number[], target: number): number;
export declare function percentageIncrease(a: number, b: number): number;
export declare const isPercentageOf: (num: number, total: number) => number;
export declare const toDp: (number: number, decimalPlaces: number) => string;
export declare const toCurrency: (number: number, currency: 'EUR' | 'GBP' | 'USD') => string;
export declare const toPercentage: (number: number, decimalPlaces?: number | undefined) => string;
export declare function formatCompactNumber(number: number): string;
export declare const numberPostfix: (number: number) => "th" | "st" | "nd" | "rd";
