perf(core): convert for..in to Object.keys().forEach for better perf
#1370
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- as mentioned in this [Stack Overflow](https://stackoverflow.com/a/43446317/1212166), `Object.keys().forEach` are quicker than `for..in` because the latter also loops through prototype chain.
Codecov ReportAll modified and coverable lines are covered by tests ✅
Additional details and impacted files@@ Coverage Diff @@
## master #1370 +/- ##
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+ Coverage 99.7% 99.8% +0.1%
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Files 199 199
Lines 21565 21566 +1
Branches 7199 7200 +1
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+ Hits 21499 21503 +4
+ Misses 59 57 -2
+ Partials 7 6 -1 ☔ View full report in Codecov by Sentry. |
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Object.keys().forEachare quicker thanfor..inbecause the latter also loops through prototype chain.