nunjucks-template-loader/filters/numberFormat.js

Webpack loader for Nunjucks

function numberFormat (number, decimals, dec_point, separator) {
    number = (number + '').replace(/[^0-9+\-Ee.]/g, '');

    let n = !isFinite(+number) ? 0 : +number,
        prec = !isFinite(+decimals) ? 0 : Math.abs(decimals),
        sep = (typeof separator === 'undefined') ? ',' : separator,
        dec = (typeof dec_point === 'undefined') ? '.' : dec_point,
        s = '',
        toFixedFix = function (n, prec) {
            let k = Math.pow(10, prec);
            return '' + (Math.round(n * k) / k)
                .toFixed(prec);
        };

    s = (prec ? toFixedFix(n, prec) : '' + Math.round(n))
        .split('.');

    if (s[0].length > 3) {
        s[0] = s[0].replace(/\B(?=(?:\d{3})+(?!\d))/g, sep);
    }

    if ((s[1] || '')
        .length < prec) {
        s[1] = s[1] || '';
        s[1] += new Array(prec - s[1].length + 1)
            .join('0');
    }

    return s.join(dec);
}

module.exports = numberFormat