This demonstrates the difference in performance between 2-tier architectures, which simply return database objects through controllers from the repositories vs 3-tier architectures which run some sort of service layer mapping to obfuscate unnecessary db information from both the controller layer and, subsequently, the front-end. Such mapping logic will ideally use Object.assign, the spread operator, or perhaps an explicit constructor mapping.

ba

Produce a deep copy of a Javascript object where nested objects are not simply references to the originals.

Is there a performance benefit to replacing == with >?

measures the speed of ramda's map vs Array's native map vs lodash map vs Immutable map

Pour antho & babtou

save length of the array in the variable vs get it the loop

Comparison of raw Array creation before calling Array.prototype.fill and Array.from.