False positive on UseDeclaredVarsMoreThanAssignments with Foreach-Object -Begin #1129
Description
Steps to reproduce
Get-SomeKeyValuePairs |
Where-Object { some validation script }
Foreach-Object -Begin {
$failedValidation = [System.Collections.ArrayList]@()
} -Process {
$failedValidation.Add($_.Name)
} -End {
if (@($failedValidation).Count -gt 0) {
throw "The following required parameters were empty: $($failedValidation -join ', ')."
}
}(Note: There are much better ways to write this, one of which I am now using; this code was just my first shot at the problem.)
Expected behavior
No output from the analyzer.
Actual behavior
I receive a warning indicating "The variable 'failedValidation' is assigned but never used."
Environment data
> $PSVersionTable
Name Value
---- -----
PSVersion 5.1.15063.1563
PSEdition Desktop
PSCompatibleVersions {1.0, 2.0, 3.0, 4.0...}
BuildVersion 10.0.15063.1563
CLRVersion 4.0.30319.42000
WSManStackVersion 3.0
PSRemotingProtocolVersion 2.3
SerializationVersion 1.1.0.1
> (Get-Module -ListAvailable PSScriptAnalyzer).Version | ForEach-Object { $_.ToString() }
1.17.1