fix: use options sourceDir, and fix null property access. Also use 1.9

proper tsconfig reading.

Fixes #619.

Author: hansl

lib/broccoli/angular2-app.js

@@ -27,7 +27,9 @@ class Angular2App extends BroccoliPlugin {
     options = options || {};
 
     this._options = options;
-    this._sourceDir = ngConfig.defaults.sourceDir || 'src';
+    this._sourceDir = options.sourceDir
+                   || (ngConfig.defaults && ngConfig.defaults.sourceDir)
+                   || 'src';
     this._inputNode = inputNode || this._buildInputTree();
     this._destDir = options.destDir || '';
 

lib/broccoli/broccoli-typescript.js

@@ -159,9 +159,7 @@ class BroccoliTypeScriptCompiler extends Plugin {
 
     this._tsConfigFiles = tsconfig.files.splice(0);
 
-    // the conversion is a bit awkward, see https://github.com/Microsoft/TypeScript/issues/5276
-    // in 1.8 use convertCompilerOptionsFromJson
-    this._tsOpts = ts.parseJsonConfigFileContent(tsconfig, null, null).options;
+    this._tsOpts = ts.convertCompilerOptionsFromJson(tsconfig, '', null).options;
     this._tsOpts.rootDir = '';
     this._tsOpts.outDir = '';