How do I import specific functions from a module explicitly?

Question

This is for readability and safety (clobbering duplication functions) and finding a workaround for no namespace support with PowerShell modules.

I want to be able to do something like this:

Import-Module MyHelpers.psm1 -Functions "FuncOne" -as MyHelpers.Func-One

MyHelpers.Func-One -blah sfsdfsdf

This make it obvious where FuncOne lives. for larger scripts I consider this pretty serious requirement.

It would probably be good enough if I could at least explicitly define which functions I'm importing (without being able to rename them). At least I would see where they are coming from. Is there any support for this? If not then I'll just have to name all functions inside of MyHelpers like MyHelpers.Func-One but then PowerShell will complain the verb is wrong; would that also break other things too?

Use the Function parameter to restrict the function (s) you want to import. Use the Prefix parameter to add a prefix string to the functions. See Import- module examples 5 and 6 — Theo
– Theo, Commented Mar 1, 2020 at 16:13

Theo · Accepted Answer · 2020-03-01 19:20:14Z

3

Here's my comment as answer:

You can use the Function parameter to restrict the function (s) you want to import.

Next, with the Prefix parameter you can add a prefix string to these imported functions.

See Import- module examples 5 and 6

answered Mar 1, 2020 at 19:20

Theo

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The-Stanislav Dec 19, 2024 at 3:15

example 5: Import-Module PSDiagnostics -Function Disable-PSTrace, Enable-PSTrace

briantist · Accepted Answer · 2024-11-30 14:18:18Z

1

Theo's answer is correct, just want to point out also that you can fully qualify commands that you call by prefixing them with the module name already, for example:

Microsoft.PowerShell.Core\Import-Module -Name ActiveDirectory

ActiveDirectory\Get-ADComputer $env:COMPUTERNAME

or to your example:

Import-Module MyHelpers.psm1 -Function "FuncOne" -as MyHelpers.Func-One

MyHelpers\Func-One -blah sfsdfsdf

edited Nov 30, 2024 at 14:18

answered Mar 1, 2020 at 20:34

briantist

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