80 lines
2.0 KiB
JavaScript
80 lines
2.0 KiB
JavaScript
/** @format */
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/* eslint-disable wpcalypso/import-docblock */
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/**
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* WooCommerce dependencies
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*/
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import { CURRENCY } from '@woocommerce/wc-admin-settings';
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const number_format = require( 'locutus/php/strings/number_format' );
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/**
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* Formats a number using site's current locale
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*
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* @see http://locutus.io/php/strings/number_format/
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* @param {Number|String} number number to format
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* @param {int|null} [precision=null] optional decimal precision
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* @returns {?String} A formatted string.
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*/
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export function numberFormat( number, precision = null ) {
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if ( 'number' !== typeof number ) {
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number = parseFloat( number );
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}
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if ( isNaN( number ) ) {
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return '';
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}
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const {
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decimalSeparator,
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thousandSeparator,
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} = CURRENCY;
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precision = parseInt( precision );
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if ( isNaN( precision ) ) {
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const [ , decimals ] = number.toString().split( '.' );
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precision = decimals ? decimals.length : 0;
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}
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return number_format( number, precision, decimalSeparator, thousandSeparator );
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}
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/**
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* Formats a number string based on type of `average` or `number`.
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*
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* @param {String} type of number to format, average or number
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* @param {int} value to format.
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* @returns {?String} A formatted string.
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*/
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export function formatValue( type, value ) {
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if ( ! Number.isFinite( value ) ) {
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return null;
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}
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switch ( type ) {
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case 'average':
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return Math.round( value );
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case 'number':
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return numberFormat( value );
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}
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}
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/**
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* Calculates the delta/percentage change between two numbers.
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*
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* @param {int} primaryValue the value to calculate change for.
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* @param {int} secondaryValue the baseline which to calculdate the change against.
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* @returns {?int} Percent change between the primaryValue from the secondaryValue.
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*/
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export function calculateDelta( primaryValue, secondaryValue ) {
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if ( ! Number.isFinite( primaryValue ) || ! Number.isFinite( secondaryValue ) ) {
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return null;
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}
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if ( secondaryValue === 0 ) {
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return 0;
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}
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return Math.round( ( primaryValue - secondaryValue ) / secondaryValue * 100 );
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}
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