fix error "Cannot read property 'find' of undefined" with typescript files

CHANGELOG.md

@@ -7,6 +7,10 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
 
 ## [unreleased]
 
+## [2.0.10] - 2019-05-31
+
+- [#1690](https://github.com/teambit/bit/issues/1690) fix error "Cannot read property 'find' of undefined" with typescript files
+
 ## [2.0.9] - 2019-05-31
 
 - [#1665](https://github.com/teambit/bit/issues/1665) fix resolve-modules prefix with tilda

package.json

@@ -1,6 +1,6 @@
 {
   "name": "bit-javascript",
-  "version": "2.0.9",
+  "version": "2.0.10",
   "scripts": {
     "flow": "flow; test $? -eq 0 -o $? -eq 2",
     "lint": "eslint src && flow check || true",

src/dependency-builder/detectives/detective-typescript/index.js

@@ -32,6 +32,7 @@ module.exports = function (src, options = {}) {
   };
   const addExportedToImportSpecifier = (name) => {
     Object.keys(dependencies).forEach((dependency) => {
+      if (!dependencies[dependency].importSpecifiers) return;
       const specifier = dependencies[dependency].importSpecifiers.find(i => i.name === name);
       if (specifier) specifier.exported = true;
     });

src/dependency-builder/detectives/detective-typescript/index.spec.js

@@ -113,4 +113,10 @@ describe('detective-typescript', () => {
       detective("import foo from 'foo'; var baz = <baz>bar;");
     });
   });
+
+  it('does not throw with empty import and export', () => {
+    assert.doesNotThrow(() => {
+      detective("import './layout.scss'; export default something;");
+    });
+  });
 });