eslint/no-new-func Style
What it does
The rule disallow new operators with the Function object.
Why is this bad?
Using new Function or Function can lead to code that is difficult to understand and maintain. It can introduce security risks similar to those associated with eval because it generates a new function from a string of code, which can be a vector for injection attacks. Additionally, it impacts performance negatively as these functions are not optimized by the JavaScript engine.
Examples
Examples of incorrect code for this rule:
js
var x = new Function("a", "b", "return a + b");
var x = Function("a", "b", "return a + b");
var x = Function.call(null, "a", "b", "return a + b");
var x = Function.apply(null, ["a", "b", "return a + b"]);
var x = Function.bind(null, "a", "b", "return a + b")();
var f = Function.bind(null, "a", "b", "return a + b");Examples of correct code for this rule:
js
let x = function (a, b) {
return a + b;
};