var filter = SpreadsheetApp.getActiveSpreadsheet().getSheetByName("sheetName").getFilter();
var criteriaValues = filter.getColumnFilterCriteria(columnPosition).getCriteriaValues();
Logger.log("criteria Values length " + criteriaValues.length);
Logger.log(criteriaValues);
var visibleValues = filter.getColumnFilterCriteria(columnPosition).getVisibleValues();
Logger.log("visible Values length " + visibleValues.length);
Logger.log(visibleValues);
var hiddenValues = filter.getColumnFilterCriteria(columnPosition).getHiddenValues();
Logger.log("hidden Values length " + hiddenValues.length);
Logger.log(hiddenValues);
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