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- // @ts-check
- export const DECIMAL_UNITS = Object.freeze({
- ONE: 1,
- TEN: 10,
- HUNDRED: Math.pow(10, 2),
- THOUSAND: Math.pow(10, 3),
- MILLION: Math.pow(10, 6),
- BILLION: Math.pow(10, 9),
- TRILLION: Math.pow(10, 12),
- });
- const TEN_THOUSAND = DECIMAL_UNITS.THOUSAND * 10;
- const TEN_MILLIONS = DECIMAL_UNITS.MILLION * 10;
- /**
- * @typedef {[number, number, number]} ShortNumber
- * Array of: shorten number, unit of shorten number and maximum fraction digits
- */
- /**
- * @param {number} sourceNumber Number to convert to short number
- * @returns {ShortNumber} Calculated short number
- * @example
- * shortNumber(5936);
- * // => [5.936, 1000, 1]
- */
- export function toShortNumber(sourceNumber) {
- if (sourceNumber < DECIMAL_UNITS.THOUSAND) {
- return [sourceNumber, DECIMAL_UNITS.ONE, 0];
- } else if (sourceNumber < DECIMAL_UNITS.MILLION) {
- return [
- sourceNumber / DECIMAL_UNITS.THOUSAND,
- DECIMAL_UNITS.THOUSAND,
- sourceNumber < TEN_THOUSAND ? 1 : 0,
- ];
- } else if (sourceNumber < DECIMAL_UNITS.BILLION) {
- return [
- sourceNumber / DECIMAL_UNITS.MILLION,
- DECIMAL_UNITS.MILLION,
- sourceNumber < TEN_MILLIONS ? 1 : 0,
- ];
- } else if (sourceNumber < DECIMAL_UNITS.TRILLION) {
- return [
- sourceNumber / DECIMAL_UNITS.BILLION,
- DECIMAL_UNITS.BILLION,
- 0,
- ];
- }
- return [sourceNumber, DECIMAL_UNITS.ONE, 0];
- }
- /**
- * @param {number} sourceNumber Original number that is shortened
- * @param {number} division The scale in which short number is displayed
- * @returns {number} Number that can be used for plurals when short form used
- * @example
- * pluralReady(1793, DECIMAL_UNITS.THOUSAND)
- * // => 1790
- */
- export function pluralReady(sourceNumber, division) {
- // eslint-disable-next-line eqeqeq
- if (division == null || division < DECIMAL_UNITS.HUNDRED) {
- return sourceNumber;
- }
- let closestScale = division / DECIMAL_UNITS.TEN;
- return Math.trunc(sourceNumber / closestScale) * closestScale;
- }
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