Vizzuality/landgriffon

import { format } from 'd3-format';

// for numbers bigger than 1
export const NUMBER_FORMAT = format('.2~s');

// for numbers smaller than 1
export const SMALL_NUMBER_FORMAT = format('.2~g');

export function formatNumber(number: number): string {
  if (Math.abs(number) < 1) {
    if (Math.abs(number) < 0.001 && Math.abs(number) > 0) {
      return '< 0.001';
    }
    return SMALL_NUMBER_FORMAT(number);
  }
  return NUMBER_FORMAT(number);
}

export const PRECISE_NUMBER_FORMAT = format(',.3~r');

export const BIG_NUMBER_FORMAT = format('s');

export const formatPercentage = (value: number, options: Intl.NumberFormatOptions = {}) => {
  return Intl.NumberFormat(undefined, { style: 'percent', ...options }).format(value);
};