Remove alias in script

Question

I can remove an alias like so:

Remove-Item Alias:wget

Then trying the alias gives the expected result:

PS > wget
wget : The term 'wget' is not recognized as the name of a cmdlet, function,
script file, or operable program.

However, if I put the same into a script,

PS > cat wget.ps1
Remove-Item Alias:wget
wget

it gives unexpected result

cmdlet Invoke-WebRequest at command pipeline position 1
Supply values for the following parameters:
Uri:

Answer 1

The following seems to work

If (Test-Path Alias:wget) {Remove-Item Alias:wget}
If (Test-Path Alias:wget) {Remove-Item Alias:wget}
wget

The first line removes the Script level alias, and the second removes the Global level alias. Note that both need to be tested, because if the Global doesn't exist the Script isn't created.

Also this misbehaves in that it modifies the parent without being dot sourced.

Alternatively you can just dot source your original and that would work

. .\wget.ps1