Did anybody else have their brain do a weird backflip seeing `Array.isArray[0]`??

  Object.getOwnPropertyDescriptors(Array.isArray)
  /* 
  {
    '0': {
      value: 'https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/isArray',
      writable: true,
      enumerable: true,
      configurable: true
    },
    length: { value: 1, writable: false, enumerable: false, configurable: true },
    name: {
      value: 'isArray',
      writable: false,
      enumerable: false,
      configurable: true
    }
  }
  */

How did you get that result? I only see length and name.

Well, it was a kind of a joke intended for the folks whose brain saw the comment the same way I did. I got the result by applying the footnote to the object, as half-suggested by syntax of the parent:

  Array.isArray[0] = urlString