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Update is-objectid.ts (#4277)

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* Update is-objectid.ts

* Update is-objectid.ts
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Acid Chicken (硫酸鶏) 2019-02-15 23:42:44 +09:00 committed by syuilo
parent 0064dbb010
commit 2776934728
1 changed files with 1 additions and 1 deletions
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src/misc/is-objectid.ts
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@ -1,5 +1,5 @@
import { ObjectID } from 'mongodb';
export default function(x: any): x is ObjectID {
return x.hasOwnProperty('toHexString') || x.hasOwnProperty('_bsontype');
return x && typeof x === 'object' && (x.hasOwnProperty('toHexString') || x.hasOwnProperty('_bsontype'));
}