blob: 4a283a4b6097f4b2c4e872b0cc775024ff517b77 [file] [log] [blame]
'use strict';
var $EvalError = require('es-errors/eval');
var DaysInYear = require('./DaysInYear');
var YearFromTime = require('./YearFromTime');
// https://262.ecma-international.org/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);
};