PowerShell cmdlet is changing the type of the returned object -

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this behavior mystifying!

consider following powershell script:

[reflection.assembly]::loadfrom("newtonsoft.json.dll") | out-null  function convertfrom-jsonnet {     [cmdletbinding()]     param(         [parameter(mandatory=$true)]         [string] $json     )      $o = [newtonsoft.json.linq.jobject]::parse($json)     write-host $o.gettype().name      return $o }  clear-host  $json = '{"test":"prop"}' $o1 = convertfrom-jsonnet '{"test":"prop"}' $o2 = [newtonsoft.json.linq.jobject]::parse($json)  write-host $o1.gettype().name write-host $o2.gettype().name

you'd expect output be:

jobject jobject jobject

but it's not! it's:

jobject jproperty jobject

how possible? how type of object within function jobject, after it's passed out of function, it's jproperty?

sigh

yay powershell's inflexibility!

apparently, powershell "unroll" collections destined pipeline. in case, jobject implements icollection<keyvaluepair<string, jtoken>>. jobject's collection contains single jproperty, being "unrolled" pipeline. found this answer, shows rolling collection outer collection cause intended value placed in pipeline.

wouldn't nice if powershell had mechanism adding pipeline untouched? :)


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