Multiple tables in single sheet using sheetJS

Question

I am successfully using the example from sheetJS's website, like so:

/* create new workbook */
var workbook = XLSX.utils.book_new();

/* convert table 'table1' to worksheet named "Sheet1" */
var ws1 = XLSX.utils.table_to_sheet(document.getElementById('table1'));
XLSX.utils.book_append_sheet(workbook, ws1, "Sheet1");

/* convert table 'table2' to worksheet named "Sheet2" */
var ws2 = XLSX.utils.table_to_sheet(document.getElementById('table2'));
XLSX.utils.book_append_sheet(workbook, ws2, "Sheet2");

/* workbook now has 2 worksheets */

Is it possible to append multiple html tables to a single sheet? They have the same structure. I imagine it could be something, like so:

/* convert 'table1', 'table2', 'table3' to single sheet named "Sheet1" */
var ws1 = XLSX.utils.table_to_sheet(document.getElementById('table1'));
var ws2 = XLSX.utils.table_to_sheet(document.getElementById('table2'));
var ws3 = XLSX.utils.table_to_sheet(document.getElementById('table3'));
XLSX.utils.book_append_sheet(workbook, {ws1, ws2, ws3}, "Sheet1");