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NodeJS : (mongoose/promises) How do you check if document was created using findOneAndUpdate with upsert
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I promised to share a hidden feature with you, and here it is.
This is a YouTube's feature which works on Desktop.
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Your YouTube progress indicator will turn into a shimmering rainbow.

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NodeJS : (mongoose/promises) How do you check if document was created using findOneAndUpdate with upsert
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findOneAndUpdate : check using you How do document was if created with NodeJS (mongoose/promises) upsert