feat: add type re-export support to no-types-missing-file-annotation (gajus#228)

Author: pascalduez

src/rules/noTypesMissingFileAnnotation.js

@@ -20,6 +20,11 @@ export default (context) => {
   };
 
   return {
+    ExportNamedDeclaration (node) {
+      if (node.exportKind === 'type') {
+        reporter(node, 'exports');
+      }
+    },
     ImportDeclaration (node) {
       if (node.importKind === 'type') {
         reporter(node, 'imports');

tests/rules/assertions/noTypesMissingFileAnnotation.js

@@ -30,6 +30,12 @@ export default {
         message: 'Type imports require valid Flow declaration.'
       }]
     },
+    {
+      code: 'export type {A} from "a"',
+      errors: [{
+        message: 'Type exports require valid Flow declaration.'
+      }]
+    },
     {
       code: 'function t<T>(): T{}',
       errors: [{
@@ -52,6 +58,9 @@ export default {
     },
     {
       code: '/* @noflow */\nimport {type A} from "a"'
+    },
+    {
+      code: '/* @noflow */\nexport type {A} from "a"'
     }
   ]
 };