Enable source-maps as per @chriseppstein’s PR #91

Author: stefanpenner

.gitignore

@@ -2,4 +2,5 @@ node_modules
 tmp
 *.js
 *.d.ts
+*.map
 !types/

tsconfig.json

@@ -1,13 +1,14 @@
 {
   "compilerOptions": {
+    "baseUrl": ".",
     "declaration": true,
-    "strict": true,
-    "moduleResolution": "node",
     "module": "commonjs",
-    "target": "es5",
+    "moduleResolution": "node",
     "paths": {
       "*": ["types/*"]
     },
-    "baseUrl": "."
+    "sourceMap": true,
+    "strict": true,
+    "target": "es5"
   }
 }