blob: 939c14c0c87ef6b1d8ebc09e936e6c4e86e793c5 [file] [log] [blame]
Leo Repp58b9f112021-11-22 11:57:47 +01001'use strict';
2
3var GetIntrinsic = require('get-intrinsic');
4
5var $TypeError = GetIntrinsic('%TypeError%');
6
7var weekdays = ['Sun', 'Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat'];
8var months = ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec'];
9
10var $isNaN = require('../helpers/isNaN');
11var padTimeComponent = require('../helpers/padTimeComponent');
12
13var Type = require('./Type');
14var WeekDay = require('./WeekDay');
15var MonthFromTime = require('./MonthFromTime');
16var YearFromTime = require('./YearFromTime');
17var DateFromTime = require('./DateFromTime');
18
19// https://262.ecma-international.org/9.0/#sec-datestring
20
21module.exports = function DateString(tv) {
22 if (Type(tv) !== 'Number' || $isNaN(tv)) {
23 throw new $TypeError('Assertion failed: `tv` must be a non-NaN Number');
24 }
25 var weekday = weekdays[WeekDay(tv)];
26 var month = months[MonthFromTime(tv)];
27 var day = padTimeComponent(DateFromTime(tv));
28 var year = padTimeComponent(YearFromTime(tv), 4);
29 return weekday + '\x20' + month + '\x20' + day + '\x20' + year;
30};