[Home](./index.md) > [rc-js-util](./rc-js-util.md) > [IOnFreeListener](./rc-js-util.ionfreelistener.md) ## IOnFreeListener interface A listener for [IManagedResourceNode](./rc-js-util.imanagedresourcenode.md). **Signature:** ```typescript export interface IOnFreeListener ``` ## Methods

Method	Description
[onFree()](./rc-js-util.ionfreelistener.onfree.md)	Should be called once the resource has been freed.