From f69c5496c60832615be413a775c22546fd244182 Mon Sep 17 00:00:00 2001
From: Christopher Chedeau <vjeuxx@gmail.com>
Date: Tue, 23 May 2017 13:14:13 -0700
Subject: [PATCH] Break if the first group has an end of line comment (#1681)

This was unstable
---
 src/printer.js                                |  1 +
 .../__snapshots__/jsfmt.spec.js.snap          | 21 +++++++++++++++++++
 tests/method-chain/comment.js                 | 11 ++++++++++
 3 files changed, 33 insertions(+)

diff --git a/src/printer.js b/src/printer.js
index 58bd2be6..6ba4e5d7 100644
--- a/src/printer.js
+++ b/src/printer.js
@@ -3347,6 +3347,7 @@ function printMemberChain(path, options, print) {
   const printedGroups = groups.map(printGroup);
   const oneLine = concat(printedGroups);
   const hasComment =
+    groups[0][groups[0].length - 1].node.comments ||
     (groups.length >= 2 && groups[1][0].node.comments) ||
     (groups.length >= 3 && groups[2][0].node.comments);
 
diff --git a/tests/method-chain/__snapshots__/jsfmt.spec.js.snap b/tests/method-chain/__snapshots__/jsfmt.spec.js.snap
index ab221072..0939ce35 100644
--- a/tests/method-chain/__snapshots__/jsfmt.spec.js.snap
+++ b/tests/method-chain/__snapshots__/jsfmt.spec.js.snap
@@ -230,6 +230,17 @@ Something
   // $FlowFixMe(>=0.41.0)
   .getInstance(this.props.dao)
   .getters()
+
+// Warm-up first
+measure()
+  .then(() => {
+    SomethingLong();
+  });
+
+measure() // Warm-up first
+  .then(() => {
+    SomethingLong();
+  });
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 function f() {
   return (
@@ -257,6 +268,16 @@ Something
   .getInstance(this.props.dao)
   .getters();
 
+// Warm-up first
+measure().then(() => {
+  SomethingLong();
+});
+
+measure() // Warm-up first
+  .then(() => {
+    SomethingLong();
+  });
+
 `;
 
 exports[`first_long.js 1`] = `
diff --git a/tests/method-chain/comment.js b/tests/method-chain/comment.js
index bb5c8a43..2c81c23c 100644
--- a/tests/method-chain/comment.js
+++ b/tests/method-chain/comment.js
@@ -22,3 +22,14 @@ Something
   // $FlowFixMe(>=0.41.0)
   .getInstance(this.props.dao)
   .getters()
+
+// Warm-up first
+measure()
+  .then(() => {
+    SomethingLong();
+  });
+
+measure() // Warm-up first
+  .then(() => {
+    SomethingLong();
+  });