Load extra polyfills when isIntersecting is undefined (#4469)

2017-08-01 02:40:20 +09:00 · 2017-08-01 02:40:20 +09:00 · b9ec3b7e7c
commit b9ec3b7e7c
parent 9b247c3d88
1 changed files with 2 additions and 0 deletions
--- a/app/javascript/mastodon/load_polyfills.js
+++ b/app/javascript/mastodon/load_polyfills.js
@ -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
  );