From 59fe72ee7da73fbe2be1d18fa428a76fdf2f3411 Mon Sep 17 00:00:00 2001
From: Logan Smyth <loganfsmyth@gmail.com>
Date: Sat, 16 Jul 2016 23:12:20 -0700
Subject: [PATCH] Avoid recalculating the current line.

---
 packages/babel-generator/src/printer.js | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/packages/babel-generator/src/printer.js b/packages/babel-generator/src/printer.js
index 0ab1998be4..40a2880603 100644
--- a/packages/babel-generator/src/printer.js
+++ b/packages/babel-generator/src/printer.js
@@ -243,7 +243,9 @@ export default class Printer {
     // catch up to this nodes newline if we're behind
     const pos = loc ? loc[prop] : null;
     if (pos && pos.line !== null) {
-      while (this._buf.getCurrentLine() < pos.line) {
+      const count = pos.line - this._buf.getCurrentLine();
+
+      for (let i = 0; i < count; i++) {
         this._newline();
       }
     }