From 55b02449cf33623e68d434db8261d0db3069fcb3 Mon Sep 17 00:00:00 2001
From: Simon Lydell <simon.lydell@gmail.com>
Date: Mon, 3 Apr 2017 13:08:52 +0200
Subject: [PATCH] Fix printing of exact object flow type annotations

Fixes #1089.
---
 src/printer.js                                      | 4 ++--
 tests/exact_object/__snapshots__/jsfmt.spec.js.snap | 8 ++++++++
 tests/exact_object/jsfmt.spec.js                    | 1 +
 tests/exact_object/test.js                          | 1 +
 4 files changed, 12 insertions(+), 2 deletions(-)
 create mode 100644 tests/exact_object/__snapshots__/jsfmt.spec.js.snap
 create mode 100644 tests/exact_object/jsfmt.spec.js
 create mode 100644 tests/exact_object/test.js

diff --git a/src/printer.js b/src/printer.js
index 2c7fb157ecf7..1dec2400b4bd 100644
--- a/src/printer.js
+++ b/src/printer.js
@@ -704,10 +704,10 @@ function genericPrintNoParens(path, options, print) {
       if (props.length === 0) {
         return group(
           concat([
-            "{",
+            leftBrace,
             comments.printDanglingComments(path, options),
             softline,
-            "}"
+            rightBrace
           ])
         );
       } else {
diff --git a/tests/exact_object/__snapshots__/jsfmt.spec.js.snap b/tests/exact_object/__snapshots__/jsfmt.spec.js.snap
new file mode 100644
index 000000000000..f2ac21e440e2
--- /dev/null
+++ b/tests/exact_object/__snapshots__/jsfmt.spec.js.snap
@@ -0,0 +1,8 @@
+// Jest Snapshot v1, https://goo.gl/fbAQLP
+
+exports[`test.js 1`] = `
+"type Props = {||};
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+type Props = {||};
+"
+`;
diff --git a/tests/exact_object/jsfmt.spec.js b/tests/exact_object/jsfmt.spec.js
new file mode 100644
index 000000000000..989047bccc52
--- /dev/null
+++ b/tests/exact_object/jsfmt.spec.js
@@ -0,0 +1 @@
+run_spec(__dirname);
diff --git a/tests/exact_object/test.js b/tests/exact_object/test.js
new file mode 100644
index 000000000000..046279e56bf2
--- /dev/null
+++ b/tests/exact_object/test.js
@@ -0,0 +1 @@
+type Props = {||};