Load extra polyfills when isIntersecting is undefined (#4469)

rebase/4.0.0rc2
Yamagishi Kazutoshi 2017-08-01 02:40:20 +09:00 committed by Eugen Rochko
parent 9b247c3d88
commit b9ec3b7e7c
1 changed files with 2 additions and 0 deletions

View File

@ -24,6 +24,8 @@ function loadPolyfills() {
// This avoids shipping them all the polyfills.
const needsExtraPolyfills = !(
window.IntersectionObserver &&
window.IntersectionObserverEntry &&
'isIntersecting' in IntersectionObserverEntry.prototype &&
window.requestIdleCallback &&
'object-fit' in (new Image()).style
);