avoid object-spread in perf-critical code, use Object.assign-instead
#164892
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Random find from profiling. Looks like object spread is much slower than
Object.assign1 . Usingassigninstead of spread in theregisterConfigurationSchemasfunction reduces its total selftime (sum of all invocation) from ~120ms to ~30ms 🐎before
after
1On Safari both are equal but on chrome the difference is significant: https://www.measurethat.net/Benchmarks/Show/2978/0/lodash-merge-vs-objectassign-vs-spread