TypeError: ImageCharts(...).chco is not a function in node v16

Hi,

I just installed the library to start using your tool.
I use NextJS (latest version) and after a first test, here is what I get when I try to generate a URL.

It is noted that it can be used on the Node side, it also seems strange to me that if a dependency is missing, it is not installed?

Example :

const pie = ImageCharts().cht('lc').chd('t:50,20,30,43,2,3,456,7').chxl('1:|01/04|02/04|03/04|04/04|04/04|04/04|04/04|04/04').chtt('New Visitors').chm('B,76A4FB,0,0,0')

pie.toURL()

An idea ?

Firstly wanted to give thanks for providing such a useful service, but I'm currently running into this issue when trying to use the module with TypeScript. When trying to build my app I get this error node_modules/image-charts/types.d.ts' is not a module..

I have imported the module like so: import ImageCharts from 'image-charts'
Not sure how to get this work, but I may have to modify tsconfig.json as well? Either way it's not clearly documented so I'm kind of stuck with using const ImageCharts = require('image-charts') in the meantime which kind of renders all the type definitions to be useless at the moment. I'll tag @geopic here since he was the one who originally implemented the types.d.ts declaration file.

If you want I can write a TypeScript type declaration file for this package so that TS developers can utilise the type-checking feature of the language as they use this package. Let me know if you are interested.

use .chlps('backgroundColor,FFF')
show .chlps is not a function