feat(*): add sourceRoot support

Author: Stanislav Panferov

package.json

@@ -48,6 +48,6 @@
     "grunt-shell": "^1.1.2",
     "grunt-ts": "^3.0.0",
     "load-grunt-tasks": "^0.6.0",
-    "typescript": "^1.8.0-dev.20151119"
+    "typescript": "^1.8.0-dev.20151123"
   }
 }

src/index.ts

@@ -6,6 +6,7 @@ require('babel-polyfill');
 
 import * as Promise from 'bluebird';
 import * as _ from 'lodash';
+import * as path from 'path';
 
 import { ICompilerOptions } from './host';
 import { createResolver } from './deps';
@@ -154,7 +155,12 @@ async function compiler(webpack: IWebPack, text: string): Promise<void> {
         let resultSourceMap = transformation.map;
 
         if (resultSourceMap) {
-            resultSourceMap.sources = [ fileName ];
+            let sourcePath = path.relative(
+                instance.options.sourceRoot,
+                loaderUtils.getRemainingRequest(webpack)
+            );
+
+            resultSourceMap.sources = [ sourcePath ];
             resultSourceMap.file = fileName;
             resultSourceMap.sourcesContent = [ text ];
         }

src/instance.ts

@@ -152,7 +152,8 @@ export function ensureInstance(webpack: IWebPack, options: ICompilerOptions, ins
         doTypeCheck: true,
         sourceMap: true,
         verbose: false,
-        noLib: false
+        noLib: false,
+        sourceRoot: process.cwd()
     });
 
     options = _.omit(options, 'outDir') as any;