From f6bbc2ed2ec8f50ed923ba4bc4bfd1bc261ad1e8 Mon Sep 17 00:00:00 2001
From: Brian Ng <bng412@gmail.com>
Date: Sun, 5 Mar 2017 21:08:42 -0600
Subject: [PATCH] Fix bug with importing empty type (#904)

---
 src/printer.js                                          | 2 ++
 tests/flow/import_type/__snapshots__/jsfmt.spec.js.snap | 2 ++
 tests/flow/import_type/import_type_specifier.js         | 1 +
 3 files changed, 5 insertions(+)

diff --git a/src/printer.js b/src/printer.js
index cae46331d..02b707ef2 100644
--- a/src/printer.js
+++ b/src/printer.js
@@ -529,6 +529,8 @@ function genericPrintNoParens(path, options, print) {
         }
 
         fromParts.push(grouped.length === 0 ? line : " ", "from ");
+      } else if (n.importKind && n.importKind === "type") {
+        parts.push("{} from ");
       }
 
       fromParts.push(path.call(print, "source"), ";");
diff --git a/tests/flow/import_type/__snapshots__/jsfmt.spec.js.snap b/tests/flow/import_type/__snapshots__/jsfmt.spec.js.snap
index 554d22ae4..657b49352 100644
--- a/tests/flow/import_type/__snapshots__/jsfmt.spec.js.snap
+++ b/tests/flow/import_type/__snapshots__/jsfmt.spec.js.snap
@@ -353,12 +353,14 @@ exports[`import_type_specifier.js 1`] = `
  */
 
 import { Foo, type Baz } from \\"../module\\";
+import type {} from 'foo';
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 /**
  * @flow
  */
 
 import { Foo, type Baz } from \\"../module\\";
+import type {} from \\"foo\\";
 "
 `;
 
diff --git a/tests/flow/import_type/import_type_specifier.js b/tests/flow/import_type/import_type_specifier.js
index 4e5d1bfae..7075a3e01 100644
--- a/tests/flow/import_type/import_type_specifier.js
+++ b/tests/flow/import_type/import_type_specifier.js
@@ -3,3 +3,4 @@
  */
 
 import { Foo, type Baz } from "../module";
+import type {} from 'foo';