strider
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Brilliant continuous deployment platform
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JavaScript
/*
* Javascript Humane Dates
* Copyright (c) 2008 Dean Landolt (deanlandolt.com)
* Re-write by Zach Leatherman (zachleat.com)
*
* Adopted from the John Resig's pretty.js
* at http://ejohn.org/blog/javascript-pretty-date
* and henrah's proposed modification
* at http://ejohn.org/blog/javascript-pretty-date/#comment-297458
*
* Licensed under the MIT license.
*/
exports.humaneDate = function humaneDate(date, compareTo) {
if (!date) {
return;
}
const lang = {
ago: 'Ago',
from: '',
now: 'Just Now',
minute: 'Minute',
minutes: 'Minutes',
hour: 'Hour',
hours: 'Hours',
day: 'Day',
days: 'Days',
week: 'Week',
weeks: 'Weeks',
month: 'Month',
months: 'Months',
year: 'Year',
years: 'Years',
};
const formats = [
[60, lang.now],
[3600, lang.minute, lang.minutes, 60],
[86400, lang.hour, lang.hours, 3600],
[604800, lang.day, lang.days, 86400],
[2628000, lang.week, lang.weeks, 604800],
[31536000, lang.month, lang.months, 2628000],
[Infinity, lang.year, lang.years, 31536000],
];
const isString = typeof date == 'string';
date = isString
? new Date(date.replace(/-/g, '/').replace(/[TZ]/g, ' '))
: date;
compareTo = compareTo || new Date();
let seconds = (compareTo -
date +
(compareTo.getTimezoneOffset() -
// if we received a GMT time from a string, doesn't include time zone bias
// if we got a date object, the time zone is built in, we need to remove it.
(isString ? 0 : date.getTimezoneOffset())) *
60000) /
1000;
let token;
if (seconds < 0) {
seconds = Math.abs(seconds);
token = lang.from ? ` ${lang.from}` : '';
}
else {
token = lang.ago ? ` ${lang.ago}` : '';
}
/*
* 0 seconds && < 60 seconds Now
* 60 seconds 1 Minute
* > 60 seconds && < 60 minutes X Minutes
* 60 minutes 1 Hour
* > 60 minutes && < 24 hours X Hours
* 24 hours 1 Day
* > 24 hours && < 7 days X Days
* 7 days 1 Week
* > 7 days && < ~ 1 Month X Weeks
* ~ 1 Month 1 Month
* > ~ 1 Month && < 1 Year X Months
* 1 Year 1 Year
* > 1 Year X Years
*
* Single units are +10%. 1 Year shows first at 1 Year + 10%
*/
function normalize(val, single) {
const margin = 0.1;
if (val >= single && val <= single * (1 + margin)) {
return single;
}
return val;
}
for (let i = 0, format = formats[0]; formats[i]; format = formats[++i]) {
if (seconds < format[0]) {
if (i === 0) {
// Now
return format[1];
}
const val = Math.ceil(normalize(seconds, format[3]) / format[3]);
return `${val} ${val != 1 ? format[2] : format[1]}${i > 0 ? token : ''}`;
}
}
};
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