 c177363a19
			
		
	
	c177363a19
	
	
	
		
			
			🤖 Generated with [Claude Code](https://claude.ai/code) Co-Authored-By: Claude <noreply@anthropic.com>
		
			
				
	
	
		
			20 lines
		
	
	
		
			462 B
		
	
	
	
		
			JavaScript
		
	
	
	
	
	
			
		
		
	
	
			20 lines
		
	
	
		
			462 B
		
	
	
	
		
			JavaScript
		
	
	
	
	
	
| 'use strict';
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| 
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| var $EvalError = require('es-errors/eval');
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| 
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| var DaysInYear = require('./DaysInYear');
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| var YearFromTime = require('./YearFromTime');
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| 
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| // https://262.ecma-international.org/5.1/#sec-15.9.1.3
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| 
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| module.exports = function InLeapYear(t) {
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| 	var days = DaysInYear(YearFromTime(t));
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| 	if (days === 365) {
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| 		return 0;
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| 	}
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| 	if (days === 366) {
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| 		return 1;
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| 	}
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| 	throw new $EvalError('Assertion failed: there are not 365 or 366 days in a year, got: ' + days);
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| };
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