Analyzer for Type Reassignment in `foreach` Loop

Summary of the new feature
Consider the following script:

if ($true) {
    [String]$MyVar = "Blah"
}

[int[]]$MyInts = @(1,2,3)
foreach ($MyVar in $MyInts) {
    Write-Host "This is my type [$($MyVar.GetType())]"
}

A naïve C# reading of the above PowerShell would assume that the above would print out:

This is my type [int]
This is my type [int]
This is my type [int]

However this is PowerShell and due to Scoping Rules this actually returns:

This is my type [string]
This is my type [string]
This is my type [string]

Proposed technical implementation details (optional)

This has already burned me once in production.

As far as I can tell there is not an existing analyzer to determine this.

It is unclear if it is even feasible to do this reliably.

What is the latest version of PSScriptAnalyzer at the point of writing

PS > Get-Module | Where-Object {$_.Name -eq 'PSScriptAnalyzer' }

ModuleType Version    PreRelease Name                                ExportedCommands
---------- -------    ---------- ----                                ----------------
Script     1.19.1                PSScriptAnalyzer                    {Get-ScriptAnalyzerRule, Invoke-Formatter, Invoke…

ソースファイル、テスト、エントリポイントは指定されていません。まず既存のアナライザールールとリンクされている PowerShell のスコープ規則を確認し、その後、foreach ループ内での型の再代入を確実に検出できるかどうかを判断してください。サンプルの動作を網羅するテストを伴う、文書化されたアナライザー診断があれば完了です。