zhangnaisong
2023-08-05 24d66c8d82b628a06e93dbb1abfea2049b3d45ab
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'use strict';
 
var GetIntrinsic = require('get-intrinsic');
 
var $EvalError = GetIntrinsic('%EvalError%');
 
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);
};