The js_cols dependency breaks modern setups

[bwswedberg]

Problem

This library is not functional out of the box when using a modern setup like vite v5 and typescript v5 which impacts @ngageoint/grid-js and @ngageoint/mgrs-js usage. It looks like the js_cols dependency is improperly bundled which blows up on "Uncaught ReferenceError: js_cols is not defined"

I'm unsure why exactly this works in commonjs vs es modules + vite. Regardless, js_cols does not have a very robust bundle (see https://github.com/thomasstjerne/js_cols/blob/master/dist/js_cols.min.js).

Ideal Solution

Shim or fix js_cols so that downstream users of libraries like @ngageoint/mgrs-js don't have to.

Steps to Reproduce

1. Generate vite project i.e. npm create vite@latest my-app -- --template vanilla-ts
2. Add the following to the index.html in the body tag

       <script type="module">
         import * as gridJs from '@ngageoint/grid-js';
         import * as mgrsJs from '@ngageoint/mgrs-js';
         console.log(mgrsJs.MGRS.from(gridJs.Point.degrees(0, 0)));
       </script>

Temp Workaround

See below for my temp temp solution. This defines the js_cols variable on global scope. It's later overridden when the library is imported.

        <script type="module">
          // This goes before the main bundle in the body
          window.js_cols = undefined;
        </script>

Environment

• vite v5
• node v20
• typescript v5