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Preview of Mutation Events Polyfill

Mutation Events Polyfill by Norvyll

Polyfills deprecated Mutation Events (DOMNodeInserted, DOMSubtreeModified, etc.) using MutationObserver, ensuring compatibility for sites that rely on these events after their removal in Chrome 127+ and future Firefox versions.

Available on Firefox for Android™
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About this extension
Automatically injects a MutationObserver-based polyfill on every page to restore support for deprecated Mutation Events. Useful for sites and legacy scripts relying on DOMNodeInserted, DOMNodeRemoved, DOMSubtreeModified, and related events.
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  • Access your data for all websites

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Version
1.0.8
Size
9.99 KB
Last updated
18 days ago (May 27, 2026)
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