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Add fallback to window.onresize

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Ewa Gasperowicz
2018-09-17 11:30:06 +02:00
parent 2a47f67214
commit bcd88f6356
1 changed files with 6 additions and 2 deletions
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8
src/components/Output/custom-els/TwoUp/index.ts
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@@ -38,8 +38,12 @@ export default class TwoUp extends HTMLElement {
.observe(this, { childList: true });
// Watch for element size changes.
new ResizeObserver(() => this._resetPosition())
.observe(this);
if (window.hasOwnProperty('ResizeObserver')) {
new ResizeObserver(() => this._resetPosition())
.observe(this);
} else {
window.addEventListener('resize', () => this._resetPosition());
}
// Watch for pointers on the handle.
const pointerTracker: PointerTracker = new PointerTracker(this._handle, {