pagereveal event
Chrome Platform Status
https://chromestatus.com/feature/5205586941837312
https://chromestatus.com/features#firstrender
https://chromestatus.com/features#pagereveal
whatwg/html
https://github.com/whatwg/html/pull/9818
https://github.com/whatwg/html/pull/9791
https://github.com/whatwg/html/issues/9315
https://github.com/search?type=commits&q=repo%3Achromium%2Fchromium+pagereveal
https://github.com/search?type=commits&q=repo%3Achromium%2Fchromium+readytorender
mdn
https://github.com/mdn/mdn/issues?q=pagereveal
https://github.com/mdn/content/issues?q=pagereveal
caniuse