Get All Packages from the PowerShell Gallery

GetAllPSGalleryPackages.ps1

using namespace System.Management.Automation
using namespace System.Collections.Generic

[List[Job2]]$jobs = @()

[List[Object]]$Result = @()

$baseUri = 'https://www.powershellgallery.com/api/v2/Packages?$skip='
$maxPackages = 309000
for ($i = 0; $i -lt $maxPackages; $i += 100) {
	$job = Start-ThreadJob {
		Invoke-RestMethod -Uri ($args[0] + $args[1])
	} -ArgumentList $baseUri, $i
	[void]$jobs.Add($job)

	if ($jobs.Count -gt 30) {
		$jobs | Wait-Job -Any | Out-Null
	}

	foreach ($completedJob in ($jobs | Where-Object State -Match 'Completed|Failed')) {
		$completedJob | Receive-Job -Wait -AutoRemoveJob | ForEach-Object {
			[void]$Result.Add($_)
		}
		Write-Verbose "Job: $i Result: $($Result.Count)"
		[void]$jobs.Remove($completedJob)
	}
}

Write-Verbose 'Waiting for final Job Completion for 10 seconds'
$jobs | Wait-Job -Timeout 30 | Out-Null
foreach ($completedJob in ($jobs | Where-Object State -Match 'Completed|Failed')) {
	$completedJob | Receive-Job -Wait -AutoRemoveJob | ForEach-Object {
		[void]$Result.Add($_)
	}
	Write-Verbose "Final Job: $i Final Result: $($Result.Count)"
	[void]$jobs.Remove($completedJob)
}

Tip: [void] Isn't required for the add functions: List.Add/AddRange

List.Remove is one that returns a value.
I didn't see an overload that both: returns nothing and accepts type Object

It's probably a holdover from using Arraylist, hashset, or another type temporarily. It doesn't hurt anything to have it there regardless (other than a little confusion :))