Ng-lazyload-image: Could you add loadStart event output?

I sound like a narrow use case but I could accept it :) I guess we need to add a tap function between these two lines:
https://github.com/tjoskar/ng-lazyload-image/blob/d45e55b481dfad5fd50317bbc57b216248e554df/src/lazyload-image.ts#L16-L17

And pass down a output property.

Also could you define the exportAs to parameter

Sure. I don't have the time right now but I will accept PRs :)

@tjoskar thanks, I can develop in a few weeks 👍

I'm thinking of changing the outout onLoad to onStateChange or simmular and pass all type of events there. Maybe with the signature:

interface StateChangeEvent {
  reason: 'setup' | 'observer-emit' | 'start-loading' | 'loading-failed' | 'loading-succeeded'
}
function onStateChange(event: StateChangeEvent) {

}

This is included in 7.1.0. See: https://github.com/tjoskar/ng-lazyload-image#onStateChange