Can't invoke custom array prototype method

[symisz]

it throws an error when invoking a custom prototype method
i'm using JavaScript

this is the error

at [27, 0]
at [22, 46]
at Script.runInContext (node:vm:135:12)
at Script.runInNewContext (node:vm:140:17)
at Object.runInNewContext (node:vm:292:38)
at C (c:\Users\X.vscode\extensions\donjayamanne.typescript-notebook-2.0.6\out\extension\server\index.js:2:113345)
at t.execCode (c:\Users\X.vscode\extensions\donjayamanne.typescript-notebook-2.0.6\out\extension\server\index.js:2:114312)
at k. (c:\Users\X.vscode\extensions\donjayamanne.typescript-notebook-2.0.6\out\extension\server\index.js:2:142156)
at k.emit (node:events:514:28)
at k.emit (node:domain:489:12)

[DonJayamanne]

Thanks for filing this issue, and sorry you are running into this, plese can you share a sample code to replicate this issue.

[symisz]

Yea, definitely.

const animals = [
  { name: 'Fluffy', species: 'rabbit'},
  { name: 'Caro', species: 'dog'},
  { name: 'Ed', species: 'dog'},
  { name: 'Jim', species: 'fish'},
  { name: 'Coco', species: 'cat'},
  { name: 'Max', species: 'fish'}
]

const isDog = (animal) => {
  return animal.species === 'dog'
}

Array.prototype.reject = function(callback) {
  return this.filter(item => !callback(item));
};

var dogs = animals.filter(isDog)
var otherAnimals = animals.reject(isDog)

console.log(otherAnimals);