Create Hashtable from JSON
<p>I want to get a JSON representation of a Hashtable such as this:</p>

<pre><code>@{Path="C:\temp"; Filter="*.js"}
</code></pre>

<p><code>ConvertTo-Json</code> results in:</p>

<pre><code>{
    "Path":  "C:\\temp",
    "Filter":  "*.js"
}
</code></pre>

<p>However, if you convert that JSON string back with <code>ConvertFrom-Json</code> you don't get a HashTable but a PSCustomObject.</p>

<p>So how can one reliably serialize the above Hashmap?</p>