Remove all stored npm packages from Azure Artifacts

removeoldnpmpackages.ps1

<# Azure DevOps REST API #>
$url1 = 'https://feeds.dev.azure.com/{organization}/_apis/packaging/Feeds/{feed_id}/packages?protocolType=npm&includeAllVersions=true&api-version=7.1-preview.1'

$Token = '{Personal_Access_Token}'

if ($Token -eq "") {
    Write-Host 'PAT not set'
    exit 1
}
$AzureAuthHeader1 = [Convert]::ToBase64String([Text.Encoding]::ASCII.GetBytes(("{0}:{1}" -f "", $Token)))

$headers1 = New-Object "System.Collections.Generic.Dictionary[[String],[String]]"
$headers1.Add("Authorization", ("Basic {0}" -f $AzureAuthHeader1))
$headers1.Add("Content-Type", "application/json")

$response1 = Invoke-RestMethod -Uri $url1 -Method GET -Headers $headers1

$packages = $response1.value

<# Loops through returned npm package versions and deletes them #>
Foreach ($i in $packages)
{
    $packageName = $i.name
    Write-Host $i.name -BackgroundColor cyan
    $allversions = $i.versions
    Foreach ($v in $allversions) {
        $packageVersion = $v.version
        $url2 = 'https://pkgs.dev.azure.com/{organization}/_apis/packaging/feeds/{feed_id}/npm/{0}/versions/{1}?api-version=7.1-preview.1' -f $packageName, $packageVersion
        $AzureAuthHeader2 = [Convert]::ToBase64String([Text.Encoding]::ASCII.GetBytes(("{0}:{1}" -f "", $Token)))

        $headers2 = New-Object "System.Collections.Generic.Dictionary[[String],[String]]"
        $headers2.Add("Authorization", ("Basic {0}" -f $AzureAuthHeader2))
        $headers2.Add("Content-Type", "application/json")

        $response2 = Invoke-RestMethod -Uri $url2 -Method DELETE -Headers $headers2
        Write-Host 'deleted' + $response2.value
    }
}

If there are a large number of npm packages, this script will have to be run multiple times given there is a limit on the number of npm package versions retrieved at one time.