There is a module that has an "initialize" function that sets a variable that gets used in other scripts/functions in the module to validate that the initialize function was run. Something like

Start-InitializeThing
Connect to the API
    
$Script:SNOWinit = $true

Then in another script/function it will check:

if ($Script:SNOWinit -eq $true) { Do the thing!}

Is there a way to grab that $Script:SNOWinit in the same PowerShell window, but not the same module?

I want to run the same check but for a different function that is not in the module.

Can I do this, can I "dig" into like the modules runspace and check that variable. I don't have the means to edit the functions in the module so I cant change what type of variable is set once the initialize script has run.

CodePudding user response：

Assuming that the module of interest is named foo and that it has already been imported (loaded):

. (Get-Module foo) { $SNOWinit }

If you want to import the module on demand:

. (Import-Module -PassThru foo) { $SNOWinit }

• The above returns the value of the $SNOWinit variable defined in the root scope of module foo.

  • See this blog post for background information.

• Note that it is generally not advisable to use this technique, because it violates the intended encapsulation that modules provide. In the case at hand, $SNOWinit, as a non-public module variable, should be considered an implementation detail, which is why you shouldn't rely on its presence in production code.

CodePudding user response：

From the bible, WPiA. More mysterious uses for the call operator.

# get a variable in module scope
$m = get-module counter
& $m Get-Variable count
& $m Set-Variable count 33