Use is syntax (#4079)
				
					
				
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					 1 changed files with 3 additions and 1 deletions
				
			
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			@ -1,3 +1,5 @@
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export default function(x: any): boolean {
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import { ObjectID } from 'mongodb';
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export default function(x: any): x is ObjectID {
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	return x.hasOwnProperty('toHexString') || x.hasOwnProperty('_bsontype');
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}
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