From d944ebf6db8c3e91c4502c187ff58b081e4f8ded Mon Sep 17 00:00:00 2001
From: Christopher Chedeau <vjeuxx@gmail.com>
Date: Sun, 22 Jan 2017 12:33:21 -0800
Subject: [PATCH] Ignore EmptyStatement inside of switch case (#391)

Fixes #378
---
 src/printer.js                                | 2 +-
 tests/switch/__snapshots__/jsfmt.spec.js.snap | 9 +++++++++
 tests/switch/empty_switch.js                  | 1 +
 3 files changed, 11 insertions(+), 1 deletion(-)
 create mode 100644 tests/switch/empty_switch.js

diff --git a/src/printer.js b/src/printer.js
index f06decfa..6bbf18a7 100644
--- a/src/printer.js
+++ b/src/printer.js
@@ -977,7 +977,7 @@ function genericPrintNoParens(path, options, print) {
       if (n.test) parts.push("case ", path.call(print, "test"), ":");
       else parts.push("default:");
 
-      if (n.consequent.length > 0) {
+      if (n.consequent.find(node => node.type !== "EmptyStatement")) {
         const cons = path.call(
           function(consequentPath) {
             return printStatementSequence(consequentPath, options, print);
diff --git a/tests/switch/__snapshots__/jsfmt.spec.js.snap b/tests/switch/__snapshots__/jsfmt.spec.js.snap
index 60b9dc0f..0005e88a 100644
--- a/tests/switch/__snapshots__/jsfmt.spec.js.snap
+++ b/tests/switch/__snapshots__/jsfmt.spec.js.snap
@@ -1,3 +1,12 @@
+exports[`test empty_switch.js 1`] = `
+"switch (1) { default:; }
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+switch (1) {
+  default:
+}
+"
+`;
+
 exports[`test more_switch.js 1`] = `
 "/* @flow */
 
diff --git a/tests/switch/empty_switch.js b/tests/switch/empty_switch.js
new file mode 100644
index 00000000..b91bfe9d
--- /dev/null
+++ b/tests/switch/empty_switch.js
@@ -0,0 +1 @@
+switch (1) { default:; }