@amcharts/amcharts5/.internal/core/util/Counter.js

amCharts 5

/**
 * @ignore
 */
export class CounterRef {
    constructor(f) {
        this._refs = 0;
        this._disposed = false;
        this._dispose = f;
    }
    incrementRef() {
        ++this._refs;
    }
    decrementRef() {
        --this._refs;
        if (this._refs <= 0) {
            if (!this._disposed) {
                this._disposed = true;
                this._dispose();
            }
        }
    }
}
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