Expose a function to load specific images before they appear

It would be useful to be able to preload certain images in advance when certain events are triggered (say, a menu is opened). Currently, though, the load function is not exported from the module. It would be useful to reuse it instead of having to write it by yourself.

The only issue I see is that the load function is configurable. Although I suppose, we could assign it to the lozad object.

Example:

import lozad from 'lozad'

const observer = lozad()
observer.observe()
document.addEventListener('menu:open', () => {
  observer.load('img.language-icon')
})

Though observer.load doesn’t sound right.

[ApoorvSaxena]

thanks for getting this done all the way @thiamsantos

[thiamsantos]

I just opened a pull request adding this feature