functions/Get-InstalledExtensionDetails.ps1
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function Get-InstalledExtensionDetails { [CmdletBinding()] param ( [Parameter(Mandatory=$true)] [string] $Name, [Parameter()] [string] $Version, [Parameter()] [switch] $PreRelease ) # NOTE: For some reason using with 'Get-PSResource' does not behave as expected, # so we have to create a specific splat object rather then just using PSBoundParameters # after having removed the 'PreRelease' parameter that Get-PSResource does not use. $splat = @{ Name = $Name } if ($Version) { $splat.Add("Version", $Version) } # Setup a dynamic filter to handle whether we should see any installed pre-release versions if ($PreRelease -or $Version) { # Return all versions as we're either looking for a specific version (in which case # we should only have a single result), or we're interested in pre-release versions # so no filtering is required. $filter = { $true } } else { # Otherwise we're only intrested in non pre-release versions $filter = { $_.PreRelease -eq "" } } # Use Get-PsResource to query whether the module is already installed, unlike Get-Module it supports # filtering the version using a proper SemVer syntax. $existing = Get-PSResource @splat -ErrorAction Ignore | Where-Object $filter | Sort-Object Version -Descending | Select-Object -First 1 if ($existing) { # Derive the path to the module from the installed module metadata # NOTE: The available 'InstalledLocation' property is different depending on # whether the module has just been installed or was already installed. if ($existing.InstalledLocation.EndsWith("Modules")) { $modulePath = Join-Path -Resolve $existing.InstalledLocation $existing.Name $existing.Version } else { $modulePath = $existing.InstalledLocation } $existingVersion = $existing.Prerelease ? "$($existing.Version)-$($existing.Prerelease)" : $existing.Version return $modulePath,$existingVersion } else { return $null } } |