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fix: Remove Firefox warnings about deprecated event props #8736

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merged 2 commits into from
May 30, 2024
Merged

fix: Remove Firefox warnings about deprecated event props #8736

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f92eb23
fix: Remove Firefox warnings about deprecated event props
mister-ben May 17, 2024
6cfefb1
Merge branch 'main' into fix-ff-deprecated-props
mister-ben May 23, 2024
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12 changes: 8 additions & 4 deletions src/js/utils/events.js
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Original file line number Diff line number Diff line change
Expand Up @@ -112,15 +112,19 @@ export function fixEvent(event) {
// IE8 Doesn't like when you mess with native event properties
// Firefox returns false for event.hasOwnProperty('type') and other props
// which makes copying more difficult.
// TODO: Probably best to create a whitelist of event props

// TODO: Probably best to create an allowlist of event props
const deprecatedProps = [
'layerX', 'layerY', 'keyLocation', 'path',
'webkitMovementX', 'webkitMovementY', 'mozPressure', 'mozInputSource'
];

for (const key in old) {
// Safari 6.0.3 warns you if you try to copy deprecated layerX/Y
// Chrome warns you if you try to copy deprecated keyboardEvent.keyLocation
// and webkitMovementX/Y
// Lighthouse complains if Event.path is copied
if (key !== 'layerX' && key !== 'layerY' && key !== 'keyLocation' &&
key !== 'webkitMovementX' && key !== 'webkitMovementY' &&
key !== 'path') {
if (!deprecatedProps.includes(key)) {
// Chrome 32+ warns if you try to copy deprecated returnValue, but
// we still want to if preventDefault isn't supported (IE8).
if (!(key === 'returnValue' && old.preventDefault)) {
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