Comparing whether checking is (typeof variable === "undefined") is faster than (variable === undefined)

const shuffleColor = (array) => { const length = array === null ? 0 : array.length; return length ? array[Math.floor(Math.random() * length)] : undefined; };

Testing the difference between native loops and find() with setting multiple variables

Testing the difference between native loops and find() with setting multiple variables

Measure the fastest way to merge objects, without mutation.

Measure the fastest way to merge objects, without mutation.

Measure the fastest way to merge objects, without mutation.

Measure the fastest way to merge objects, without mutation.

Measure the fastest way to merge objects, without mutation.