Return subbaray from array of target indexes

subbaray.js

/*
Example:
    const arr = [1,2,3,4,5,7,8]
    arr.subarrayFromIndexes([0,77,3,5,15])
*/
Array.prototype.subarrayFromIndexes = function (indexes) {
    if (!Array.isArray(this))
        throw "indexes must be array"
    
    return indexes.reduce((acc, current) => {
        return this[current] ? [...acc, this[current] ] : acc
    }, [])
}