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node_modules/es-abstract/2016/InLeapYear.js
| 21 lines
| 517 B
| application/javascript
| JavascriptLexer
|
r789 | '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); | ||||
}; | ||||