[Home](./index.md) > [rc-js-util](./rc-js-util.md) > [ReferenceCounter](./rc-js-util.referencecounter.md) ## ReferenceCounter class Weak reference counter. **Signature:** ```typescript export declare class ReferenceCounter ``` ## Constructors

Constructor	Modifiers	Description
[(constructor)(onZeroReference)](./rc-js-util.referencecounter._constructor_.md)		Constructs a new instance of the `ReferenceCounter` class

## Methods

Method	Modifiers	Description
[add(key)](./rc-js-util.referencecounter.add.md)
[remove(key)](./rc-js-util.referencecounter.remove.md)