Method includes

packages/@ember/array/index.ts:1124–1124

Used to determine if the array contains the passed object. Returns `true` if found, `false` otherwise. The optional `startAt` argument can be used to pass a starting index to search from, effectively slicing the searchable portion of the array. If it's negative it will add the array

(object: T, startAt?: number)

    @public
  */
  includes(object: T, startAt?: number): boolean;
  /**
    Sorts the array by the keys specified in the argument.