'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); | |
}; |