question: readme bundle size reduction clarification?

[MovingGifts]

Hello in the readme it mentions both ways to reduce the bundle size:

Or, import only a subset of the library:

import isEmail from 'validator/lib/isEmail';

Tree-shakeable ES imports

import isEmail from 'validator/es/lib/isEmail';

How do these differ? Does one of them make a smaller bundle size than the other?

[sebastian-fredriksson-bernholtz]

I'm confused about this as well...