src/plugins/easycurrency/formatters/DefaultFormatter.js

import * as currencies from 'js-money/lib/currency.js';
import Formatter from './Formatter';


/**
 * A default formatting implementation.
 * Formats most currencies as $00.00, except JPY which is 00 $
 */
export default class DefaultFormatter extends Formatter {
    /**
     * Format a currency.
     * @param {type}	amount - Amount in cents.
     * @param {type}	currency - Currency code to convert to.
     * @return {String}
     */
    format(amount, currency) {
        var currencyInfo = currencies[currency];

        if (currencyInfo.code == 'JPY') {
            return this._suffixSymbolNoDecimal(amount, currencyInfo, true);
        }

        return this._formatPrefixedSymbolTwoDecimal(amount, currencyInfo, false);
    }


    /**
     * Format as 00 $
     * @param {Number}	amount
     * @param {Object}	currencyInfo
     * @param {Boolean}	space
     * @return {String}
     */
    _suffixSymbolNoDecimal(amount, currencyInfo, space) {
        // Amount is always in cents, even for JPY
        return (amount / 100) + (space ? ' ' : '') + currencyInfo.symbol_native;
    }

    /**
     * Format as $00.00
     * @param {Number}	amount
     * @param {Object}	currencyInfo
     * @param {Boolean}	space
     * @return {String}
     */
    _formatPrefixedSymbolTwoDecimal(amount, currencyInfo, space) {
        return currencyInfo.symbol_native + (space ? ' ' : '') + (amount / 100).toFixed(2);
    }
}