es module version

[daKmoR]

hey,

sinon chai is not available as an es module version

I would like to do something like this (natively in the browser)

import { sinonChai } from './node_modules/sinon-chai';
// could also be from './node_modules/sinon-chai/sinon-chai-esm.js';

chai.use(sinonChai);

same as it's offered for https://sinonjs.org/

would you be interested in offering an es module versions then I can prepare a PR.
(possibly using rollup or even turning it around and have an es module source and export a node/amd package => details could be discussed if this is a possible route)

[blikblum]

For the record: just published sinon-chai-es with #151