We have a lightweight tracker which can send events. Our current stack is Grunt/Browserify and Snowplow. I have the chance to rewrite the whole tracker, but I’m a bit lost what tech stack to use. The requirements include to be as small as possible and to be able to support old browsers like IE8. I would like to use ES6 / TypeScript, but I’m afraid e.g. Webpack will blow up my bundle size which is not acceptable. Do you have any suggestions for setting up such an environment?