Webserver Requirments for js module

The webserver needs to serve .mjs files, for apache you can add and .htaccess file

Apache

<IfModule mod_mime.c>
  AddType text/javascript js mjs
</IfModule>

Lighttpd server

mimetype.assign   += ( ".mjs" => "text/javascript" )
mimetype.assign   += ( ".map" => "text/css" )

Read and parse Excel files into array rows

How to use Get_excel

 import { Get_excel } from "node_modules/get_excel/src/index.js";
 document.querySelector("#input").addEventListener("change", function(){
 var e = new Get_excel();
 let arr = await e.get_array(file);
 }, false);