Use native es6 map, filter to reduce the size of the bundle

[stereobooster]

Use browserslist field to identify targeted browsers and automatic polyfill (not sure if there is a feature for that in TypeScript, but this is supported by Babel)

https://github.com/you-dont-need/You-Dont-Need-Lodash-Underscore

[jeffijoe]

TS does not support toggling specified ES6 features, it's either ES6 or not ES6.

I'd like to use Rollup to ship multiple builds (commonjs, modules and umd) but at the moment I don't have the time to do it.

Do you have any suggestions how to tackle this? A PR is welcome. :)

[stereobooster]

Do you have any suggestions how to tackle this?

I have no actionable plan yet. I'll give it a try when I have time.

There is engines field in package.json, so I know your expectation about node.js version. Do you have any expectations about browser support?

[jeffijoe]

Haven't given browser support much thought since it spits out ES5 haha 😄

What's the standard?

[stereobooster]

It depends. You can, for example, choose the same browsers as React support or any other big library.

[jeffijoe]

Yeah, probably gonna pick the same set of browsers as MobX if we do this.

[jeffijoe]

Come to think of it, AFAIK Lodash implements the most efficient versions of these functions, so I think that's another reason to keep them around.

Closing for now. If there are others who think we should favor a smaller bundle, please let me know and I'll reconsider.