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							14 lines
						
					
					
						
							457 B
						
					
					
				| var toIntegerOrInfinity = require('../internals/to-integer-or-infinity'); | |
| var toLength = require('../internals/to-length'); | |
| 
 | |
| var $RangeError = RangeError; | |
| 
 | |
| // `ToIndex` abstract operation | |
| // https://tc39.es/ecma262/#sec-toindex | |
| module.exports = function (it) { | |
|   if (it === undefined) return 0; | |
|   var number = toIntegerOrInfinity(it); | |
|   var length = toLength(number); | |
|   if (number !== length) throw $RangeError('Wrong length or index'); | |
|   return length; | |
| };
 | |
| 
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