fixing typescript build

src/index.ts

@@ -1,5 +1,8 @@
 import { parse } from './propTypesParser';
+import { StyleguidistComponent, StyleguidistProps } from './docgenConverter';
 
 export {
     parse,
+    StyleguidistComponent,
+    StyleguidistProps,
 }

src/propTypesParser.ts

@@ -1,10 +1,10 @@
 import { getDocumentation } from './parser';
-import { convertToDocgen } from './docgenConverter';
+import { convertToDocgen, StyleguidistComponent } from './docgenConverter';
 
 /**
  * Parser given file and return documentation in format compatibe with react-docgen.
  */
-export function parse(filePath: string) {
+export function parse(filePath: string): StyleguidistComponent {
     const doc = getDocumentation(filePath);
     return convertToDocgen(doc);		
 }