'mongoose $push, $each, results in duplicates
Syntax:
{
$push: { keywords: { $each: req.body.keywords }}
},
Data:
req.body.keywords
contents:
"keywords": ["windows","cybersecurity","passwords","chrome","security"]
Action:
findOneAndUpdate({}).clone();
Without the clone() at the end, just errors happen.
PROBLEM: Duplicate keywords.
Sources
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Source: Stack Overflow
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