List hidden Google Sheets by name and id with Google Apps Script

list_hidden_google_sheets.gs

/**
 * @OnlyCurrentDoc
 */

/**
 * Get a list of hidden or visible sheets.
 * [The video tutorial]{@link https://youtu.be/jsTvi_F_Xk8}
 * @author Scott (Yagi) <yagisanatode@gmail.com>
 * @license Attribution-NonCommercial 4.0 International (CC BY-NC 4.0)
 */


function getHiddenSheets() {
  
  // Variables.
  const ss = SpreadsheetApp.getActiveSpreadsheet();
  const sheets = ss.getSheets();

  // Hidden Sheet list
  const hiddenSheets_byName = sheets.reduce((acc, sheet) => {
    return (sheet.isSheetHidden())? acc.concat(sheet.getSheetName()) : acc  
  },[]);

  console.log(hiddenSheets_byName)

  const hiddenSheets_byId = sheets.reduce((acc, sheet) => {
    return (sheet.isSheetHidden())? acc.concat(sheet.getSheetId()) : acc  
  },[]);

  console.log(hiddenSheets_byId)

  const hiddenSheets_byNameAndId = sheets.reduce((acc, sheet) => {
    return (sheet.isSheetHidden())? acc.concat([[sheet.getName(), sheet.getSheetId()]]) : acc  
  },[]);

  console.log(hiddenSheets_byNameAndId)

};

function getVisibleSheets() {
  
  // Variables.
  const ss = SpreadsheetApp.getActiveSpreadsheet();
  const sheets = ss.getSheets();

  // Visible sheet list. 
  const visibleSheets_byName = sheets.reduce((acc, sheet) => {
    return (!sheet.isSheetHidden())? acc.concat(sheet.getSheetName()) : acc  
  },[]);

  console.log(visibleSheets_byName)

  const visibleSheets_byId = sheets.reduce((acc, sheet) => {
    return (!sheet.isSheetHidden())? acc.concat(sheet.getSheetId()) : acc  
  },[]);

  console.log(visibleSheets_byId)

  const visibleSheets_byNameAndId = sheets.reduce((acc, sheet) => {
    return (!sheet.isSheetHidden())? acc.concat([[sheet.getName(), sheet.getSheetId()]]) : acc  
  },[]);

  console.log(visibleSheets_byNameAndId)

};