Method map

src/core/pyproxy.ts:1706–1712

* See :js:meth:`Array.map`. Creates a new array populated with the results of * calling a provided function on every element in the calling ``Sequence``. * @param callbackfn A function to execute for each element in the ``Sequence``. Its * return value is added as a single element in the ne

(
    callbackfn: (elt: any, index: number, array: any) => U,
    thisArg?: any,
  )

   * @param thisArg A value to use as ``this`` when executing ``callbackFn``.
   */
  map<U>(
    callbackfn: (elt: any, index: number, array: any) => U,
    thisArg?: any,
  ): U[] {
    // @ts-ignore
    return Array.prototype.map.call(this, callbackfn, thisArg);
  }
  /**
   * See :js:meth:`Array.filter`. Creates a shallow copy of a portion of a given
   * ``Sequence``, filtered down to just the elements from the given array that pass