Transform Ember.String.fmt with ES6 string interpolation

[abuiles]

[Serabe]

I'm thinking about using the following transformation:

const str = Ember.String.fmt("a @2 b @1 c @ d", a, b, c);

into

let _watson1;

{
  let _opts = [a, b, c];
  _watson1 = `a ${_opts[1]} b ${_opts[0]} c ${_opts[0]} d`;
}
const str = _watson1;

This transformation only needs to generate a unique reference: _watson1.

Any thoughts?

[kamal]

I'd prefer it to transform it in place, so

const str = Ember.String.fmt("a @2 b @1 c @ d", a, b, c);

into

const str = "a ${a} b ${b} c ${c} d";

[knownasilya]

Yes, that looks much better.

[Serabe]

@kamal your code would transform into:

const str = `a ${b} b ${a} c ${a} d`

And what happens if a, b or care function calls that we do not expect to be called twice?

[dgavey]

Just wondering if the ability to transform the .fmt string prototype has been included in watson yet?