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                                            abhinavgoel91

Getting warning during circuit breaker usage "Warning: Possible perf_hooks memory leak detected."

Reading about [NodeJS Performance Timeline](https://medium.com/the-node-js-collection/timing-is-everything-6d43fc9fd416), and searching for "perf_hooks" in the code I get this - ```plaintext ➜ grep -rn "perf_hooks" . ./node_modules/prom-client/lib/metrics/gc.js:4:let perf_hooks; ./node_modules/prom-client/lib/metrics/gc.js:8: perf_hooks = require('perf_hooks'); ./node_modules/prom-client/lib/metrics/gc.js:17:kinds[perf_hooks.constants.NODE_PERFORMANCE_GC_MAJOR] =...

Getting warning during circuit breaker usage "Warning: Possible perf_hooks memory leak detected."

After reading this issue - https://github.com/siimon/prom-client/issues/429 & this issue - https://github.com/bfmatei/apollo-prometheus-exporter/issues/17 It's seems like something related to Node 8.