How to move all sheets from one Google spreadsheet to another?

Question

Google Sheets

There are 2 table files, each with 10 sheets, how quickly from one table file, transfer all 10 sheets to another?

Answer 1

1) Use IMPORTRANGE (table_key; range)
2) Right-click on the sheet label: Copy to... > Existing table
3) Write a script: iterates over all sheets, copies the sheet to a new table.

const id="тут_id_таблицы-приёмника";
  let destination = SpreadsheetApp.openById(id)
  let ss = SpreadsheetApp.getActiveSpreadsheet();
  let sheets = ss.getSheets();
  for (var sheet in sheets){
    sheets[sheet].copyTo(destination)
  };

Answer 2

And how to transfer only one sheet from a table with 10 sheets to another table that will contain only one sheet?