esm and cjs co-existence

https://redfin.engineering/node-modules-at-war-why-commonjs-and-es-modules-cant-get-along-9617135eeca1

• so like electron needs it's stuff in commonjs
• most of my electron apps already use utils.js as a commonjs module
• svelte needs it's stuff in esm

1. the way i've solved it i put general (not requiring node modules) utils in a separate esm module (in subfolder) like this:

• the subfolder's package.json has this: {"type": "module"} so its an esm module
• all functions in (esm) lib.js are exported like this: export function shortenFilename(){...}

1. the utils.js imports all the lib's functions with standard named imports and require, and exports them using module.exports = { namedExports }
2. the main package.json has this added for it to work:

   {
   	...
   	"exports": {
       "require": "./utils.js",
       "import": "./esm/lib.js"
     }
   }

to see the whole lib and more detaills, check this: https://github.com/KraXen72/roseboxlib