test.ps1

#!/bin/pwsh

# helper to turn PSCustomObject into a list of key/value pairs
function Get-ObjectMembers {
    [CmdletBinding()]
    Param(
        [Parameter(Mandatory=$True, ValueFromPipeline=$True)]
        [PSCustomObject]$obj
    )
    $obj | Get-Member -MemberType NoteProperty | ForEach-Object {
        $key = $_.Name
        [PSCustomObject]@{Key = $key; Value = $obj."$key"}
    }
}

$json = (Get-Content -Path './package-lock.json') -join "`n"
$json | ConvertFrom-Json | Get-ObjectMembers | foreach {
    $_.Value | Get-ObjectMembers | foreach {
      write-host "key: " $_.key "value: " $_.value.resolved
    }
}