tr.metrics.MetricRegistry.register(leakDetectionMetric);function countLeakedBlinkObjects(dumps,pid){if(dumps===undefined||dumps.length<2){throw new Error('Expected at least two memory dumps.');}
const firstCounter=countBlinkObjects(dumps[0],pid);const lastCounter=countBlinkObjects(dumps[dumps.length-1],pid);const diffCounter=new Map();for(const[key,lastCount]of lastCounter){diffCounter.set(key,lastCount-firstCounter.get(key));}