Utils/Validate-DateTime.psm1
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function Validate-DateTime { [OutputType([System.Boolean])] param ( [Parameter(Mandatory, Position = 0, ValueFromPipeline = $true)] [AllowNull()] [Nullable[System.DateTime]] $DateTime ) begin { $UnixEpoch = [Datetime]::new(1970, 1, 1, 0, 0, 0, 0, [System.DateTimeKind]::Utc) } process { if ($null -eq $DateTime -or $DateTime -ge $UnixEpoch) { return $true } else { throw [System.ArgumentOutOfRangeException]::new('DateTime must be greater than or equal to the unix epoch.') return $false } } } Export-ModuleMember -Function 'Validate-DateTime' |