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/**
* Helpers.
*/
var s = 1000;
var m = s * 60;
var h = m * 60;
var d = h * 24;
var y = d * 365.25;
/**
* Parse or format the given `val`.
*
* Options:
*
* - `long` verbose formatting [false]
*
* @api public
* @param {string|number} val
* @param {Object} options
* @return {string|number}
*/
module.exports = function(val, options) {
options = options || {};
if (typeof val === 'string') {
return parse(val);
}
// https://github.com/mochajs/mocha/pull/1035
return options['long'] ? longFormat(val) : shortFormat(val);
};
/**
* Parse the given `str` and return milliseconds.
*
* @api private
* @param {string} str
* @return {number}
*/
function parse(str) {
var match = (/^((?:\d+)?\.?\d+) *(ms|seconds?|s|minutes?|m|hours?|h|days?|d|years?|y)?$/i).exec(str);
if (!match) {
return;
}
var n = parseFloat(match[1]);
var type = (match[2] || 'ms').toLowerCase();
switch (type) {
case 'years':
case 'year':
case 'y':
return n * y;
case 'days':
case 'day':
case 'd':
return n * d;
case 'hours':
case 'hour':
case 'h':
return n * h;
case 'minutes':
case 'minute':
case 'm':
return n * m;
case 'seconds':
case 'second':
case 's':
return n * s;
case 'ms':
return n;
default:
// No default case
}
}
/**
* Short format for `ms`.
*
* @api private
* @param {number} ms
* @return {string}
*/
function shortFormat(ms) {
if (ms >= d) {
return Math.round(ms / d) + 'd';
}
if (ms >= h) {
return Math.round(ms / h) + 'h';
}
if (ms >= m) {
return Math.round(ms / m) + 'm';
}
if (ms >= s) {
return Math.round(ms / s) + 's';
}
return ms + 'ms';
}
/**
* Long format for `ms`.
*
* @api private
* @param {number} ms
* @return {string}
*/
function longFormat(ms) {
return plural(ms, d, 'day')
|| plural(ms, h, 'hour')
|| plural(ms, m, 'minute')
|| plural(ms, s, 'second')
|| ms + ' ms';
}
/**
* Pluralization helper.
*
* @api private
* @param {number} ms
* @param {number} n
* @param {string} name
*/
function plural(ms, n, name) {
if (ms < n) {
return;
}
if (ms < n * 1.5) {
return Math.floor(ms / n) + ' ' + name;
}
return Math.ceil(ms / n) + ' ' + name + 's';
}
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