[fix] no-named-default: ignore Flow import type and typeof

CHANGELOG.md

@@ -23,6 +23,7 @@ This change log adheres to standards from [Keep a CHANGELOG](http://keepachangel
 - [`first`]: fix handling of `import = require` ([#1963], thanks [@MatthiasKunnen])
 - [`no-cycle`]/[`extensions`]: fix isExternalModule usage ([#1696], thanks [@paztis])
 - [`extensions`]/[`no-cycle`]/[`no-extraneous-dependencies`]: Correct module real path resolution ([#1696], thanks [@paztis])
+- [`no-named-default`]: ignore Flow import type and typeof ([], thanks [@christianvuerings])
 
 ### Changed
 - [Generic Import Callback] Make callback for all imports once in rules ([#1237], thanks [@ljqx])
@@ -1334,4 +1335,5 @@ for info on changes for earlier releases.
 [@guillaumewuip]: https://github.com/guillaumewuip
 [@tapayne88]: https://github.com/tapayne88
 [@panrafal]: https://github.com/panrafal
-[@ttmarek]: https://github.com/ttmarek
+[@ttmarek]: https://github.com/ttmarek
+[@christianvuerings]: https://github.com/christianvuerings

docs/rules/no-named-default.md

@@ -4,6 +4,10 @@ Reports use of a default export as a locally named import.
 
 Rationale: the syntax exists to import default exports expressively, let's use it.
 
+Note that type imports, as used by [Flow], are always ignored.
+
+[Flow]: https://flow.org/
+
 ## Rule Details
 
 Given:

src/rules/no-named-default.js

@@ -13,6 +13,10 @@ module.exports = {
     return {
       'ImportDeclaration': function (node) {
         node.specifiers.forEach(function (im) {
+          if (im.importKind === 'type' || im.importKind === 'typeof') {
+            return;
+          }
+
           if (im.type === 'ImportSpecifier' && im.imported.name === 'default') {
             context.report({
               node: im.local,

tests/src/rules/no-named-default.js

@@ -9,6 +9,16 @@ ruleTester.run('no-named-default', rule, {
     test({ code: 'import bar from "./bar";' }),
     test({ code: 'import bar, { foo } from "./bar";' }),
 
+    // Should ignore imported flow types
+    test({
+      code: 'import { type default as Foo } from "./bar";',
+      parser: require.resolve('babel-eslint'),
+    }),
+    test({
+      code: 'import { typeof default as Foo } from "./bar";',
+      parser: require.resolve('babel-eslint'),
+    }),
+
     ...SYNTAX_CASES,
   ],