Adding .map() directly to String prototype

[Ben Fletcher]

Consider adding the array .map() implementation directly to the String 
prototype.

Here is a possible polyfill:

String.prototype.map = function (fn) {
  return Array.prototype.map
.call(this, fn)
.join('');
}

This replaces the common pattern of splitting, mapping, joining strings for 
processing.
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Re: es-discuss Digest, Vol 135, Issue 48

[Ben Fletcher]

Does the `[...oldArr, ...elementsToPushArr]` pattern take care of that for
you? I've always assumed it's much less performant than your form would be,
but I (naively) suppose the implementation could be optimized like anything
else

On Wed, May 23, 2018 at 8:01 AM  wrote:

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>1. Array.prototype.append ? (Jordi Bunster)
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> Date: Wed, 23 May 2018 02:45:25 +
> Subject: Array.prototype.append ?
> Has anyone ever suggested Array.prototype.append as an
> Array.prototype.push which returns the array itself? It would be
> reduce-friendly, same as Set.prototype.add and Map.prototype.set.
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