VBScript wait for application open

can you do something like a while loop that executes until the file is completely loaded? For instance whatever document properties are missing when the rest of your script starts executing.. perhaps each of the properties causing your errors.

idk VBS but in JS:

In this example we want to verify that there is an active document, that we can access the layers in the document and that we can access the swatches. if any of those fail, then the loop continues.

function test()

{

    var docReady = false;

    var MAX_TRIES = 1000;

    var curTries = 0;

    while(!docReady && curTries < MAX_TRIES)

    {

        try

        {

            curTries++;

            $.writeln("trying number " + curTries);

            var docRef = app.activeDocument;

            var layers = docRef.layers;

            var swatches = docRef.swatches;

            docReady = true;

        }

        catch(e)

        {

            $.writeln("doc not ready");

        }

    }

    $.writeln("finished.");

}

test();

just a thought. i don't know whether AI will continue to open the file during the while loop execution or if the loop will pause illustrator until it's done.