node_modules/istanbul-lib-coverage/lib/percent.js

/*
 Copyright 2012-2015, Yahoo Inc.
 Copyrights licensed under the New BSD License. See the accompanying LICENSE file for terms.
 */
'use strict';

module.exports = function percent(covered, total) {
    let tmp;
    if (total > 0) {
        tmp = (1000 * 100 * covered) / total + 5;
        return Math.floor(tmp / 10) / 100;
    } else {
        return 100.0;
    }
};