What is the purpose of DestroyableTransform? about through2 HOT 4 CLOSED

1. Not all streams implement .destroy and they also don't have to, but if they do, it's useful because you can just tell the stream "destroy yourself, i don't want to hear from you ever again"
2. The through2 syntax takes in account asynchronous operations, which makes it more generic. If all you do is sync though, for your purpose that module makes sense.

Also keep in mind that this is also valid with through2:

fs.createReadStream('ex.txt')
  .pipe(thru(function (chunk, enc, callback) {
    for (var i = 0; i < chunk.length; i++)
      if (chunk[i] == 97)
        chunk[i] = 122 // swap 'a' for 'z'
    callback(null, chunk)
   }))
  .pipe(fs.createWriteStream('out.txt'))

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@juliangruber Thanks!

(1) I see, but could you name some / any use cases of having your stream destroy itself? I don't want to add this feature until I can fully understand this point.

(2) My through version also takes async operations into account via promises. If you return a promise it will handle it accordingly.

from through2.

1. if you don't need it, don't add it, simple as that. see also #25 for motivation in this repo
2. if that works for you, that's great

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@juliangruber Thanks! 😄

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