Inconsistent behavior according to the node version about flat HOT 2 CLOSED

Edit: This could be a flat, AWS, or Node issue, but the workaround I used was more related to flat. Someone feel free to redirect if this post is in the wrong place.

Similar issue:
Upgraded from Node v5.10.1 to v6.0.0 and flat doesn't seem to play well with AWS. Works as intended after downgrading to v5.11.0. General idea of code below. AWS API call is here.

var flattened = flat(someObject, { maxDepth: N });
var values = {};
var count = 0;
for (var field in flattened) {
  values[":v" + count] = flattened[field];
  count += 1;
}
var params = {
  // ... stuff for AWS
  ExpressionAttributeValues: values,
  // ... more stuff for AWS
}
logger.info(params); // no issues logging the object
aDynamoDBObject.update(params); // AWS error: ExpressionAttributeValues must not be empty

It seems like the reference to the flattened object's value is lost. Tried using the deepcopy library to no avail. Works as intended after replacing

flattened[field]

with

Object.assign({}, flattened[field])

But this doesn't work when flattened[field] is not an object.

from flat.

Closing this as the issue was reported for currently ancient versions of Node.js and it is no longer possible to reproduce this. As far as I can tell this behavior is consistent in modern version of Node.js.

from flat.