como usar o takeRightWhile no javascript es6

Removes elements from the end of an array until the passed function returns true. Returns the removed elements.

Loop through the array, using a Array.prototype.reduceRight() and accumulating elements while the function returns falsy value.

const takeRightWhile = (arr, func) =>
  arr.reduceRight((acc, el) => (func(el) ? acc : [el, ...acc]), []);

takeRightWhile([1, 2, 3, 4], n => n < 3); // [3, 4]

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