mirror of
https://github.com/musix-org/musix-oss
synced 2024-12-23 16:13:18 +00:00
22 lines
517 B
JavaScript
22 lines
517 B
JavaScript
'use strict';
|
|
|
|
var GetIntrinsic = require('../GetIntrinsic');
|
|
|
|
var $EvalError = GetIntrinsic('%EvalError%');
|
|
|
|
var DaysInYear = require('./DaysInYear');
|
|
var YearFromTime = require('./YearFromTime');
|
|
|
|
// https://ecma-international.org/ecma-262/5.1/#sec-15.9.1.3
|
|
|
|
module.exports = function InLeapYear(t) {
|
|
var days = DaysInYear(YearFromTime(t));
|
|
if (days === 365) {
|
|
return 0;
|
|
}
|
|
if (days === 366) {
|
|
return 1;
|
|
}
|
|
throw new $EvalError('Assertion failed: there are not 365 or 366 days in a year, got: ' + days);
|
|
};
|