PSScriptAnalyzer Does Not Recognize Variable Use in ForEach-Object or .net ForEach

[JAK1047]

Prerequisites

• I have written a descriptive issue title.
• I have searched all issues to ensure it has not already been reported.
• I have read the troubleshooting guide.
• I am sure this issue is with the extension itself and does not reproduce in a standalone PowerShell instance.
• I have verified that I am using the latest version of Visual Studio Code and the PowerShell extension.
• If this is a security issue, I have read the security issue reporting guidance.

Summary

I'm not entirely sure if this lies more with PSScriptAnalyzer itself or with a combination of it and the extension. A common thing I will do is set a boolean in a ForEach\ForEach-Object loop that I use for validation later in the script. If I set the value in either a ForEach-Object loop or a .net ForEach loop then the analyzer will inform me the variable is never used. If I set it in a ForEach loop it works fine.

PowerShell Version

Name                           Value
----                           -----
PSVersion                      7.2.2
PSEdition                      Core
GitCommitId                    7.2.2
OS                             Microsoft Windows 10.0.17763
Platform                       Win32NT
PSCompatibleVersions           {1.0, 2.0, 3.0, 4.0…}
PSRemotingProtocolVersion      2.3
SerializationVersion           1.1.0.1
WSManStackVersion              3.0

Visual Studio Code Version

1.66.0
e18005f0f1b33c29e81d732535d8c0e47cafb0b5
x64

Extension Version

[email protected]

Steps to Reproduce

[bool]$Foo = $false

(1..3) | ForEach-Object {
    $Foo = $true
}

ForEach ($Object in (1..3)) {
    $Foo = $true
}

(1..3).ForEach({
    $Foo = $true
})

If ($Foo) {
    'Do thing'
}

Visuals

Logs

No response

[SeeminglyScience]

Thanks for the report! This issue is tracked in PowerShell/PSScriptAnalyzer#1641