docs.sheetjs.com/tests/engines/jurassic.sh

#!/bin/bash
# https://docs.sheetjs.com/docs/demos/engines/jurassic

cd /tmp
rm -rf SheetJSJurassic
mkdir SheetJSJurassic
cd SheetJSJurassic

dotnet new console
dotnet run

dotnet add package Jurassic --version 3.2.9

curl -LO https://cdn.sheetjs.com/xlsx-latest/package/dist/shim.min.js
curl -LO https://cdn.sheetjs.com/xlsx-latest/package/dist/xlsx.mini.min.js
curl -LO https://docs.sheetjs.com/pres.xlsx

cat >Program.cs <<EOF
/* sheetjs (C) 2013-present  SheetJS -- https://sheetjs.com */
/* vim: set ts=2: */
var engine = new Jurassic.ScriptEngine();

/* Initialize Jurassic */
engine.Evaluate("var global = (function(){ return this; }).call(null);");

/* Load SheetJS Scripts */
engine.ExecuteFile("shim.min.js");
engine.ExecuteFile("xlsx.mini.min.js");
Console.WriteLine("SheetJS version {0}", engine.Evaluate("XLSX.version"));

/* Read and Parse File */
byte[] filedata = File.ReadAllBytes(args[0]);
string b64 = System.Convert.ToBase64String(filedata);
engine.SetGlobalValue("buf", b64);
engine.Evaluate("var wb = XLSX.read(buf, {type:'base64'});");

/* Print CSV of first worksheet*/
engine.Evaluate("var ws = wb.Sheets[wb.SheetNames[0]];");
object csv = engine.Evaluate("XLSX.utils.sheet_to_csv(ws)");
Console.Write(csv);

/* Generate XLSB file and save to SheetJSJurassic.ods */
string ods = engine.Evaluate("XLSX.write(wb, {bookType: 'ods', type: 'base64'})") as string;
File.WriteAllBytes("SheetJSJurassic.ods", System.Convert.FromBase64String(ods));
EOF

dotnet run pres.xlsx