Dynamically Generate Where-Object from [PSCustomObject] Values

Get-WhereObject.ps1

Function Get-Example {

    [CmdletBinding()]
    param(
        [parameter()]
        [System.String] $FirstName,
        
        [parameter()]
        [System.String]$LastName
    )

    process {
        return [PSCustomObject]@{
            FirstName = $FirstName
            LastName = $LastName
        }
    }
}

Function Get-WhereObjectScriptBlock() {
    [CmdletBinding()]
    Param(
        [Parameter()]
        [System.String] $Operater = '-eq',

        [Parameter()]
        [System.String] $Joiner = '-AND',

        [Parameter(Mandatory)]
        [PSCustomObject] $InputObject
    )

    Process {
        $WhereList = New-Object System.Collections.ArrayList
        $Object | Get-Member -MemberType NoteProperty | Foreach-Object {
            [void]$WhereList.Add("`$_.$($_.Name) $Operater '$($Object.($_.Name))'")
        }
        If ($WhereList.Count -gt 0) {
            [scriptblock]::Create($WhereList -join " $Joiner ")
        }
    }
}

$Object = Get-Example -FirstName 'Stefan' -LastName 'Stranger'

$Where = Get-WhereObjectScriptBlock -InputObject $Object

If ($Null -ne $Where) {
    $Object | Where-Object $Where
} Else {
    $Object
}