Creating functions using the Function constructor can be avoided when all arguments are strings.

JS runtimes find it easier to optimize functions that are written in plain JavaScript syntax. Consider using arrow functions, or the function keyword instead.

Bad Practice

const add = new Function('a', 'b', 'return a + b')
const sub = Function('a', 'b', 'return a - b')

Recommended

const add = function (a, b) { return a + b }
const sub = function (a, b) { return a - b }