CODEWITHSUNDEEP
powershell
Daolin
Daolin

Reputation: 634

Function in .psm1 not getting exported

I have a myFunc.psm1 file like this:

$ApiVersion = "201846465"
Export-ModuleMember -variable ApiVersion

function Get-Something {
    [CmdletBinding()]
    param(
        [Parameter(Mandatory=$true)]
        [string]$Id]
    )
    process {
        # ...
}

When I import this to another setup.ps1 file, I saw this in execution:

VERBOSE: Loading module from path 'D:\myFunc.psm1'.
VERBOSE: Importing variable 'ApiVersion'.
VERBOSE: Hi from setup.ps1

When I remove 

$ApiVersion = "201846465"
Export-ModuleMember -variable ApiVersion

I can see:

VERBOSE: Exporting function 'Get-Something'.
VERBOSE: Importing function 'Get-Something'.
VERBOSE: Hi from setup.ps1

Why is this happening and how do I fix it?

Upvotes: 1

Views: 310

Answers (1)

mklement0
mklement0

Reputation: 437197

In the absence of a Export-ModuleMember call inside a *.psm1 file, all functions and aliases[1] are automatically exported - but not variables.

Once you use an Export-ModuleMember call, the automatic exporting is deactivated, and you must then explicitly name all elements to be exported - including functions and aliases.

Therefore:

Export-ModuleMember -Variable ApiVersion -Function Get-Something

Be sure to place the Export-ModuleMember call at the bottom of your file, to make sure that all elements you want to export have already been defined - otherwise, they're ignored.

[1] Curiously, in dynamic modules created with New-Module, it is functions only (not also aliases) that are automatically exported.

Upvotes: 1

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