Object turns into an array after unflattening about flat HOT 4 OPEN

Just ran in to this myself. I'm using unflatten to turn S3 keys in to a tree (by using '/' as a delimiter) and my S3 bucket has keys like 03/09/2014/filename.zip which turns in to { 3: { 9: { 2014: 'filename.zip' } } }

I fixed this by checking opts.object in the getKey function and not casting to Number if it's set:

function getkey(key) {
    var parsedKey = Number(key)

    return (
      opts.object ||
      isNaN(parsedKey) ||
      key.indexOf('.') !== -1
    ) ? key
      : parsedKey
  }

I realize that yes, you can pass {object:true} to unflatten, and it will not automatically assume it's an array, but then you get the opposite behavior. i.e. "Arrays turn into objects".

Does this actually happen though? It looks like unflatten handles this by returning non-Objects immediately:

if (Object.prototype.toString.call(target) !== '[object Object]') {
    return target
}

I'll write some tests to make sure and submit a PR :)

from flat.

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from flat.

Any thoughts on resolving this? Same issue as described in the original issue being experienced over here.

from flat.

We're moving off this library because of this issue.
One possible fix: use a different delimiter for arrays.

flatten({ test: ['a', 'b', 'c'] });

could yield

{ 'test[0]': 'a', 'test[1]': 'b', 'test[2]': 'c' }

from flat.