(wip sketch) Test: Auto add Attributes to Type Def for - System.Json.Text

Auto Attributes Type Def Test - System.Json.Text.ps1

#Requires -Version 7

using namespace System.Collections.Generic
using namespace System.Text
using namespace System.Text.Json
using namespace System.Text.Json.Serialization
$assembly = Add-type -AssemblyName System.Text.Json -PassThru -ea 'stop'

function AutoJson {
    <#
    .SYNOPSIS
        Try one of the automatic methods
    .notes
        [System.Text.Json.JsonSerializer] has a ton of overloads
    .LINK
        https://docs.microsoft.com/en-us/dotnet/api/system.text.json.jsonserializer?view=net-8.0#methods
    #>
    param(
        [Alias('InObj', 'In')]
        [object] $Object,

        # Without a type, it falls back to GetType()
        [Alias('Tinfo', 'T')]
        [type] $TypeInfo
    )
    if(-not $TypeInfo ) { $TypeInfo = $Object.GetType() }
    [Text.Json.JsonSerializer]::Serialize( <# value: #> $Object, <# tinfo #> $TypeInfo )
}

class SomePS {
   [string] $ProcessName
   [int] $Id

   [Serialization.JsonIgnoreAttribute()]
   [Diagnostics.ProcessModuleCollection] $Modules

   SomePS ( $src ) {
       $this.ProcessName = $src.ProcessName
       $this.Id = $Src.Id
       $this.Modules = $Src.Modules
   }
}
$hasModules = get-process | ? Modules | select -First 1

# [a] works
$hasModules -as [SomePS[]]
<#  Out:
    ProcessName             Id Modules
    -----------             -- -------
    ApplicationFrameHost 19636 {System.Diagnostics.ProcessModule (ApplicationFrameHost.exe), System.Diagnost ....
#>

$hasModules -as [SomePS[]] | %{ AutoJson -InObj $_ -TypeInfo ([SomePS]) }
<#  Out:
    {"ProcessName":"ApplicationFrameHost","Id":19636}
#>

# cool, typedata is constrained to derived types
$hasModules -as [SomePS[]] | %{ AutoJson -InObj $_ -TypeInfo ([System.Diagnostics.Process]) }
<#  Out:
    Exception calling "Serialize" with "2" argument(s): "The specified
        type [System.Diagnostics.Process] must derive from the specific value's type [SomePS]."
#>