Create a folder if it doesnt already exist.

I was able to figure this out, but maybe there is a cleaner way to go about it. First the script navigates to the Bounced Files folder of the open session. Then an applescript checks the folder to see if the dated folder exists, if not, creates it, then it goes back to Pro Tools and executes the rest of my stem export process.

//Navigate to Open Session Bounced Files folder
function navigateToInDialog(path) {
    //Get a reference to the focused window in the frontmost app:
    var win = sf.ui.frontmostApp.focusedWindow;

    //Open the Go to... sheet
    sf.keyboard.type({ text: '/' });

    //Wait for the sheet to appear
    var sheet = win.sheets.first.elementWaitFor({ timeout: 500 }, 'Could not find "Go to" sheet in the Save/Open dialog').element;

    //Set the value of the combo box
    sheet.comboBoxes.first.value.value = path;

    //Press OK
    sheet.buttons.whoseTitle.is('Go').first.elementClick({}, 'Could not click "Go"');

    //Wait for sheet to close
    win.sheets.first.elementWaitFor({ waitForNoElement: true, timeout: 500 }, '"Go to" sheet didn\'t close in time');
}

var folderPath = sf.ui.proTools.mainWindow.sessionPath.split('/').slice(0, -1).join('/') + '/Bounced Files';

if (sf.ui.frontmostApp.focusedWindow.title.value.match(/open|import/i)) {
    navigateToInDialog(folderPath);
} else {
    sf.system.exec({ commandLine: 'open "' + folderPath + '"' });
    sf.ui.finder.appActivateMainWindow();
    sf.ui.finder.windows.first.elementRaise();
}
//Check if the Dated Folder exists, if not, create it
sf.system.execAppleScript({
    script: `
-- Get the current date in YYYY-MM-DD format
set currentDate to do shell script "date +'%Y-%m-%d'"

-- Get the path of the frontmost Finder window
tell application "Finder"
    set finderWindow to front window
    set targetFolderPath to POSIX path of (target of finderWindow as alias)
end tell

-- Combine the target folder path with the current date to get the full path
set fullFolderPath to targetFolderPath & "/" & currentDate

-- Check if the folder exists
tell application "System Events"
    if not (exists folder fullFolderPath) then
        -- Folder doesn't exist, create it
        do shell script "mkdir -p " & quoted form of fullFolderPath
            else
        -- Folder already exists
    end if
end tell

`
});

//Go Back To Pro Tools
sf.ui.proTools.appActivateMainWindow();


//Select Next Clip, Copy Name, Select Stems//
sf.ui.proTools.clipSelectNextFullClip();

sf.keyboard.press({
    keys: "cmd+shift+r",
});

sf.keyboard.press({
    keys: "cmd+c",
});

sf.keyboard.press({
    keys: "return",
});

sf.wait({
    intervalMs: 500,
});

sf.keyboard.press({
    keys: "shift+semicolon",
    repetitions: 4,
});
//Export selected Clips//
sf.keyboard.press({
    keys: "cmd+shift+k",
});

//Navigate to Current Session Bounced Files by Date//
sf.ui.proTools.windows.whoseTitle.is("Export Selected").first.buttons.whoseTitle.is("Choose...").first.elementClick();

function navigateToInDialog(path) {
    //Get a reference to the focused window in the frontmost app:
    var win = sf.ui.frontmostApp.focusedWindow;

    //Open the Go to... sheet
    sf.keyboard.type({ text: '/' });

    //Wait for the sheet to appear
    var sheet = win.sheets.first.elementWaitFor({ timeout: 500 }, 'Could not find "Go to" sheet in the Save/Open dialog').element;

    //It's a combo box on older OS'es, from 12.something it's a text field
    if (sheet.comboBoxes.first.exists) {
        sheet.comboBoxes.first.value.value = path;

        //Press OK
        sheet.buttons.whoseTitle.is('Go').first.elementClick({}, 'Could not click "Go"');
    }
    else {
        //Newer OS.
        //TextField with AXConfirm
        var textField = sheet.textFields.first;
        if (!textField.exists) throw `Can't find text field`;
        textField.value.value = path;

        sheet.elementRaise();

        textField.mouseClickElement({
            relativePosition: { x: 5, y: 5 },
        });

        sf.keyboard.press({ keys: 'return' });
    }

    //Wait for sheet to close
    win.sheets.first.elementWaitFor({ waitForNoElement: true, timeout: 2500 }, '"Go to" sheet didn\'t close in time');
}

// Get the base folder path
var baseFolderPath = sf.ui.proTools.mainWindow.sessionPath.split('/').slice(0, -1).join('/');

// Get the current date in the format "YYYY-MM-DD"
var currentDate = new Date().toISOString().split('T')[0];

// Combine the base path with the current date and '/Bounces'
var folderPath = baseFolderPath + '/Bounced Files/' + currentDate;

// Call the function with the updated folder path
navigateToInDialog(folderPath);

//Create New Folder//
sf.keyboard.press({
    keys: "cmd+shift+n",
});

sf.wait({
    intervalMs: 150,
});
//Paste Folder name//
sf.keyboard.press({
    keys: "cmd+v",
});

sf.keyboard.press({
    keys: "return",
});

sf.wait({
    intervalMs: 50,
});

sf.keyboard.press({
    keys: "return",
});

sf.ui.proTools.waitForNoModals();

sf.keyboard.press({
    keys: "return",
    repetitions: 3,
    fast: false,
});