JSON Flatten / Unflatten

Flatten nested JSON to dot-notation keys and unflatten back.

Separator

JSON input

Flattened

{
  "user.name": "Alice",
  "user.address.city": "NYC",
  "user.address.zip": "10001",
  "user.tags.0": "admin",
  "user.tags.1": "user"
}

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