Integrate Dart Formatter running it using NodeJs (preliminary)

Integrate Dart Formatter running it using NodeJs (preliminary)

BUG=

[jacobr, 2016-01-26 17:18:10]

Sent out for quick review to make sure this is reasonable before I convert more
tests.

https://codereview.appspot.com/285990043/diff/10001/lib/formatter.ts
File lib/formatter.ts (right):

https://codereview.appspot.com/285990043/diff/10001/lib/formatter.ts#newcode25
lib/formatter.ts:25: var code = fs.readFileSync("./lib/dart_formatter.js",
'utf-8');
Got any tips on how I can link lib/dart_formatter.js so that it is bundled in
the output?

I can also just convert dart_formatter.js to a base64 string and include it
inline here if there isn't an obvious way to package this. For our purposes
dart_formatter.js is just a binary.
I would expect I should just be able to write
fs.readFileSync('dart_formatter.js') or
fs.readFileSync(process.cwd() + './dart_formatter.js')

[jacobr, 2016-01-26 17:19:41]

https://codereview.appspot.com/285990043/diff/10001/lib/main.ts
File lib/main.ts (right):

https://codereview.appspot.com/285990043/diff/10001/lib/main.ts#newcode333
lib/main.ts:333: // return this.result + this.generateSourceMapComment();
Let me know if it is reasonable and I'll remove all the source map code as it is
broken by running Dart Formatter and it restricts how we can generate code.
E.g. I'd like to emit imports incrementally as required by code being generated
which requires multiple simultaneous code emitter points.

[martinprobst, 2016-01-26 18:34:14]

https://codereview.appspot.com/285990043/diff/10001/lib/formatter.ts
File lib/formatter.ts (right):

https://codereview.appspot.com/285990043/diff/10001/lib/formatter.ts#newcode25
lib/formatter.ts:25: var code = fs.readFileSync("./lib/dart_formatter.js",
'utf-8');
> Got any tips on how I can link lib/dart_formatter.js so that it is bundled in
> the output?

Do you have an npm package for the dart formatter published? If so, you'd just
"require('dart_formatter');" (or whatever your package is called). Then you'd
just have it in "package.json" as a dependency and be good.

https://codereview.appspot.com/285990043/diff/10001/lib/main.ts
File lib/main.ts (right):

https://codereview.appspot.com/285990043/diff/10001/lib/main.ts#newcode333
lib/main.ts:333: // return this.result + this.generateSourceMapComment();
That's ok, just drop the source map part here (ok to keep in the code around, it
might be handy later on).