Method chaining mutator

[nicojs]

It would be nice if we can mutate method chaining. For example:

this.someArray()
    .sort()
    .map(x => someFunction(x))
    .filter(someFilter);

Putting the .sort() method in comments did not fail a test.

So I am longing for a mutator that strips out array functions that do not alter the items (like map) but only affect the sequence (like sort and filter).

Originally reported by @riezebosch in #92

[simondel]

We're closing this issue right now. If we wanted to do this, we would have done it already.