feat(tsfmt): pass specified file name to typescript language service. support tsx files.

Author: vvakame

lib/formatter.ts

@@ -7,11 +7,11 @@ import utils = require("./utils");
 
 // Note: this uses ts.formatting which is part of the typescript 1.4 package but is not currently
 //       exposed in the public typescript.d.ts. The typings should be exposed in the next release.
-function format(text: string, options = utils.createDefaultFormatCodeOptions()) {
+function format(fileName: string, text: string, options = utils.createDefaultFormatCodeOptions()) {
     "use strict";
 
     // Parse the source text
-    var sourceFile = ts.createSourceFile("file.ts", text, ts.ScriptTarget.Latest, (<any>/* backward compat for typescript-1.4.1 */"0"));
+    var sourceFile = ts.createSourceFile(fileName, text, ts.ScriptTarget.Latest, (<any>/* backward compat for typescript-1.4.1 */"0"));
     fixupParentReferences(sourceFile);
 
     // Get the formatting edits on the input sources

lib/index.ts

@@ -101,7 +101,7 @@ export function processString(fileName: string, content: string, opts: Options):
     return Promise
         .all(optGenPromises)
         .then(() => {
-            var formattedCode = formatter(content, options);
+            var formattedCode = formatter(fileName, content, options);
             if ((<any>formattedCode).trimRight) {
                 formattedCode = (<any>formattedCode).trimRight();
                 formattedCode += "\n";