-
Notifications
You must be signed in to change notification settings - Fork 159
/
utils.js
51 lines (44 loc) · 1.16 KB
/
utils.js
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
/*!
* Cluster - utils
* Copyright (c) 2011 LearnBoost <dev@learnboost.com>
* MIT Licensed
*/
/**
* Format byte-size.
*
* @param {Number} bytes
* @return {String}
* @api private
*/
exports.formatBytes = function(bytes) {
var kb = 1024
, mb = 1024 * kb
, gb = 1024 * mb;
if (bytes < kb) return bytes + 'b';
if (bytes < mb) return (bytes / kb).toFixed(2) + 'kb';
if (bytes < gb) return (bytes / mb).toFixed(2) + 'mb';
return (bytes / gb).toFixed(2) + 'gb';
};
/**
* Format date difference between `a` and `b`.
*
* @param {Date} a
* @param {Date} b
* @return {String}
* @api private
*/
exports.formatDateRange = function(a, b) {
var diff = a > b ? a - b : b - a
, second = 1000
, minute = second * 60
, hour = minute * 60
, day = hour * 24;
function unit(name, n) {
return n + ' ' + name + (1 == n ? '' : 's');
}
if (diff < second) return unit('millisecond', diff);
if (diff < minute) return unit('second', (diff / second).toFixed(0));
if (diff < hour) return unit('minute', (diff / minute).toFixed(0));
if (diff < day) return unit('hour', (diff / hour).toFixed(0));
return unit('day', (diff / day).toFixed(1));
};