es-abstract/2020/DaysInYear.js

ECMAScript spec abstract operations.

'use strict';

var modulo = require('./modulo');

// https://262.ecma-international.org/5.1/#sec-15.9.1.3

module.exports = function DaysInYear(y) {
	if (modulo(y, 4) !== 0) {
		return 365;
	}
	if (modulo(y, 100) !== 0) {
		return 366;
	}
	if (modulo(y, 400) !== 0) {
		return 365;
	}
	return 366;
};