chore(doc-gen): make the module of the export's original declaration available

docs/typescript-package/mocks/readTypeScriptModules/privateModule.ts

@@ -0,0 +1 @@
+export var x = 10;

docs/typescript-package/mocks/readTypeScriptModules/publicModule.ts

@@ -0,0 +1 @@
+export { x as y} from './privateModule';

docs/typescript-package/processors/readTypeScriptModules.js

@@ -223,6 +223,11 @@ module.exports = function readTypeScriptModules(tsParser, modules, getFileInfo,
     if (exportSymbol.flags & ts.SymbolFlags.TypeAlias) {
       exportDoc.typeDefinition = typeDefinition;
     }
+
+    // Compute the original module name from the relative file path
+    exportDoc.originalModule = exportDoc.fileInfo.relativePath
+        .replace(new RegExp('\.' + exportDoc.fileInfo.extension + '$'), '');
+
     return exportDoc;
   }
 

docs/typescript-package/processors/readTypeScriptModules.spec.js

@@ -14,6 +14,18 @@ describe('readTypeScriptModules', function() {
   });
 
 
+  describe('exportDocs', function() {
+    it('should provide the original module if the export is re-exported', function() {
+      processor.sourceFiles = [ 'publicModule.ts' ];
+      var docs = [];
+      processor.$process(docs);
+
+      var exportedDoc = docs[1];
+      expect(exportedDoc.originalModule).toEqual('privateModule');
+    });
+  });
+
+
   describe('ignoreExportsMatching', function() {
     it('should ignore exports that match items in the `ignoreExportsMatching` property', function() {
       processor.sourceFiles = [ 'ignoreExportsMatching.ts'];