fix: handle unnamed default export

Closes #350

Author: KnisterPeter

Diff for: src/typings.ts

@@ -318,7 +318,7 @@ function getComponentNamesByStaticPropTypeAttribute(ast: AstQuery): string[] {
     ]
   `);
   if (res.length > 0) {
-    return res.map(match => match.id.name);
+    return res.map(match => match.id ? match.id.name : '');
   }
   return [];
 }
@@ -337,7 +337,7 @@ function getComponentNamesByJsxInBody(ast: AstQuery): string[] {
     ]
   `);
   if (res.length > 0) {
-    return res.map(match => match.id.name);
+    return res.map(match => match.id ? match.id.name : '');
   }
   return [];
 }
@@ -358,6 +358,19 @@ function getPropTypesFromAssignment(ast: AstQuery, componentName: string): any|u
 }
 
 function getPropTypesFromStaticAttribute(ast: AstQuery, componentName: string): any|undefined {
+  if (componentName === '') {
+    const res = ast.query(`
+      //ClassDeclaration
+      /:body *
+      //ClassProperty[
+        /:key Identifier[@name == 'propTypes']
+      ]
+      /:value*
+    `);
+    if (res.length > 0 && !res[0].id) {
+      return res[0];
+    }
+  }
   const res = ast.query(`
     //ClassDeclaration[
       /:id Identifier[@name == '${componentName}']
@@ -375,6 +388,19 @@ function getPropTypesFromStaticAttribute(ast: AstQuery, componentName: string):
 }
 
 function getComponentExportType(ast: AstQuery, componentName: string): dom.DeclarationFlags|undefined {
+  if (componentName === '') {
+    // case: unnamed default export
+    const res = ast.query(`
+      // ExportDefaultDeclaration[
+          // ClassDeclaration
+        ||
+          // FunctionDeclaration
+      ]
+    `);
+    if (res.length > 0 && !res[0].id) {
+      return dom.DeclarationFlags.ExportDefault;
+    }
+  }
   let res = ast.query(`
       // ExportDefaultDeclaration[
           // ClassDeclaration
@@ -424,6 +450,14 @@ function getComponentExportType(ast: AstQuery, componentName: string): dom.Decla
 
 function isClassComponent(ast: AstQuery, componentName: string,
     reactComponentName: string|undefined): boolean {
+  if (componentName === '') {
+    const res = ast.query(`
+        // ClassDeclaration
+    `);
+    if (res.length > 0 && !res[0].id) {
+      return true;
+    }
+  }
   const res = ast.query(`
       // ClassDeclaration
       /:id Identifier[@name == '${componentName}']

Diff for: tests/parsing-test.ts

@@ -82,3 +82,6 @@ test('Parsing should create definition from file without propTypes', t => {
 test('Parsing should create definition from file with references in propTypes', t => {
   compare(t, 'component', 'references-in-proptypes.jsx', 'references-in-proptypes.d.ts');
 });
+test('Parsing should create definition from file with unnamed default export', t => {
+  compare(t, 'path', 'unnamed-default-export.jsx', 'unnamed-default-export.d.ts');
+});

Diff for: tests/unnamed-default-export.d.ts

@@ -0,0 +1,10 @@
+declare module 'path' {
+  import * as React from 'react';
+
+  export interface Props {
+        onClick?: (...args: any[]) => any;
+  }
+
+  export default class extends React.Component<Props, any> {
+  }
+}

Diff for: tests/unnamed-default-export.jsx

@@ -0,0 +1,14 @@
+import {Component, PropTypes} from 'react';
+
+export default class extends Component {
+
+    static propTypes = {
+        onClick: PropTypes.func
+    };
+
+    render() {
+        return (
+            <div></div>
+        );
+    }
+}