Method map

packages/@ember/array/index.ts:574–574

Maps all of the items in the enumeration to another value, returning a new array. This method corresponds to `map()` defined in JavaScript 1.6. The callback method you provide should have the following signature (all parameters are optional): ```javascript function(item, index,

(
    callback: (this: Target, item: T, index: number, arr: this) => U,
    target?: Target
  )

    @public
  */
  map<U, Target>(
    callback: (this: Target, item: T, index: number, arr: this) => U,
    target?: Target
  ): NativeArray<U>;