Perf test of Spread vs Object.assign()

Check for valid input by doing string.trim() or /./.test(text)

Comparing performance of Set.has() vs Array.includes()

Comparing performance of: Spread operator (...) vs JSON.parse(JSON.stringify()) vs Custom function vs Lodash.cloneDeep() vs jQuery.extend(true)

Comparing performance of: spread ... vs vs JSON.parse(JSON.stringify()) vs Custom function vs Lodash.cloneDeep() vs jQuery.extend(true) vs structuredClone()

spread vs concat vs unshift