fix: handle named export specifiers

fixes #368

Author: unstubbable

Diff for: src/typings.ts

@@ -442,6 +442,9 @@ function getComponentExportType(ast: AstQuery, componentName: string): dom.Decla
         // VariableDeclaration
         / VariableDeclarator
         /:id Identifier[@name == '${componentName}']
+      ||
+        // ExportSpecifier
+        /:exported Identifier[@name == '${componentName}']
     ]
   `);
   if (res.length > 0) {

Diff for: tests/named-export-specifiers.d.ts

@@ -0,0 +1,9 @@
+declare module 'component' {
+  export interface ComponentProps {
+    optionalAny?: any;
+  }
+
+  export function Component(props: ComponentProps): JSX.Element;
+
+  export function Component2(): JSX.Element;
+}

Diff for: tests/named-export-specifiers.jsx

@@ -0,0 +1,10 @@
+import * as React from 'react';
+
+const Component = ({optionalAny}) => <div />;
+Component.propTypes = {
+	optionalAny: React.PropTypes.any,
+};
+
+const Component2 = () => <div />;
+
+export { Component, Component2 };

Diff for: tests/parsing-test.ts

@@ -87,6 +87,9 @@ test('Parsing should create definition from file with references in propTypes',
 test('Parsing should create definition from file with unnamed default export', t => {
   compare(t, 'path', 'unnamed-default-export.jsx', 'unnamed-default-export.d.ts');
 });
+test('Parsing should create definition from file with named export specifiers', t => {
+  compare(t, 'component', 'named-export-specifiers.jsx', 'named-export-specifiers.d.ts');
+});
 test('Parsing should create preact definition', t => {
   compare(t, 'path', 'preact-definition.jsx', 'preact-definition.d.ts', {}, 'preact');
 });