It appears Google will be integrating lazy loading into the browser.[0]
In my almost 20 years of development experience, I find my todo list extremely long. And a core principle that has served me well is that if a feature is coming to the browsers for free, it's cheaper and easier to wait for the feature instead of spending real time/money building a cheap copy of it, and then having to rip it out a year later for the native feature.
"Feature patience" seems a fitting description.
I have recently used IntersectionObserver to replace scroll event functionality (modifying sticky positioned headers) and it's great for that, but I don't want to use it for lazy loading, seems like way to much work.
[0] https://groups.google.com/a/chromium.org/forum/#!msg/blink-d...
