It's easy to forget actually calling a prototype method which leads to possibly hard-to-debug errors.

Since e.g. many array methods accept a callback or only an optional parameter, this could be handled with an allowlist per global object, e.g. Array.prototype.map wouldnt need to be checked for.

Fail

function foo(myString) {
  return string.slice(3).toLowerCase
}

function foo(myArr) {
  return myArr.map(val => val ** 2).reverse
}

Pass

function foo(myString) {
  return string.slice(3).toLowerCase()
}

function foo(myArr) {
  return myArr.map(val => val ** 2).reverse()
}