eslint/no-new-wrappers Pedantic ​
What it does ​
Disallow new operators with the String, Number, and Boolean objects
Why is this bad? ​
The first problem is that primitive wrapper objects are, in fact, objects. That means typeof will return "object" instead of "string", "number", or "boolean". The second problem comes with boolean objects. Every object is truthy, that means an instance of Boolean always resolves to true even when its actual value is false.
https://eslint.org/docs/latest/rules/no-new-wrappers
Example ​
Examples of incorrect code for this rule:
js
var stringObject = new String("Hello world");
var numberObject = new Number(33);
var booleanObject = new Boolean(false);Examples of correct code for this rule:
js
var stringObject = "Hello world";
var stringObject2 = String(value);
var numberObject = Number(value);
var booleanObject = Boolean(value);