Check if SharePoint list exists using PowerShell

Check-ListExists.ps1

function Check-ListExists()
{
    param(
        [Parameter(Mandatory=$true)][string]$url,
        [Parameter(Mandatory=$true)][System.Net.NetworkCredential]$credentials,
        [Parameter(Mandatory=$true)][string]$listName
    )

    begin{
        try
        {
            #get Client Object
            $context = New-Object Microsoft.SharePoint.Client.ClientContext($url)
            $context.Credentials = $credentials
            $web = $context.Web 
            $lists = $web.Lists
            $context.Load($web) 
            $context.Load($lists)   
            $context.ExecuteQuery()
        }
        catch
        {
            Write-Host ("Error while getting context. Error -->> " + $_.Exception.Message) -ForegroundColor Red
        }
    }
    process{
        try
        {
            $list = $web.Lists | where{$_.Title -eq $listName}
            if($list)
            {
                #Execute if list exists
                Write-Host "List " $listName " exists" -ForegroundColor Green
                return $true
            }
            else
            {
                #Execute if list does not exists
                Write-Host "List " $listName " does not exists" -ForegroundColor Green
                return $false
            }
        }
        catch
        {
            Write-Host ("Error while checking for list. Error -->> " + $_.Exception.Message) -ForegroundColor Red
        }
    }
    end{
     $context.Dispose()
    }
}