Help with Excel (Online) script that creates a table of contents, but only for visible sheets

Hello.

I want to use the Excel online script found here: https://video2.skills-academy.com/en-us/office/dev/scripts/resources/samples/table-of-contents

However I'd like for it to only work for visible sheets within the workbook.

I've tried to do this myself, but am not having much luck.

function main(workbook: ExcelScript.Workbook) {

// Insert a new worksheet at the beginning of the workbook.

let tocSheet = workbook.addWorksheet();

tocSheet.setPosition(0);

tocSheet.setName("Table of Contents");

// Give the worksheet a title in the sheet.

tocSheet.getRange("A1").setValue("Table of Contents");

tocSheet.getRange("A1").getFormat().getFont().setBold(true);

// Create the table of contents headers.

let tocRange = tocSheet.getRange("A2:B2")

tocRange.setValues([["#", "Name"]]);

// Get the range for the table of contents entries.

let worksheets = workbook.getWorksheets();

tocRange = tocRange.getResizedRange(worksheets.length, 0);

// Loop through all worksheets in the workbook, except the first one.

for (let i = 1; i < worksheets.length; i++) {

// Create a row for each worksheet with its index and linked name.

tocRange.getCell(i, 0).setValue(i);

tocRange.getCell(i, 1).setHyperlink({

textToDisplay: worksheets[i].getName(),

documentReference: `'${worksheets[i].getName()}'!A1`

});

};

// Activate the table of contents worksheet.

tocSheet.activate();

}