From f56670065727c9451d1aad9150afbca41163d417 Mon Sep 17 00:00:00 2001
From: Logan Smyth <loganfsmyth@gmail.com>
Date: Mon, 25 Apr 2016 22:20:31 -0700
Subject: [PATCH] Avoid processing indentation for every pushed string.

---
 packages/babel-generator/src/buffer.js                | 8 +-------
 packages/babel-generator/src/generators/statements.js | 6 ++++--
 2 files changed, 5 insertions(+), 9 deletions(-)

diff --git a/packages/babel-generator/src/buffer.js b/packages/babel-generator/src/buffer.js
index 7c0c52efd1..bbbf423a8c 100644
--- a/packages/babel-generator/src/buffer.js
+++ b/packages/babel-generator/src/buffer.js
@@ -273,14 +273,8 @@ export default class Buffer {
 
   push(str: string, noIndent?: boolean) {
     if (!this.format.compact && this._indent && !noIndent && str !== "\n") {
-      // we have an indent level and we aren't pushing a newline
-      let indent = this.getIndent();
-
-      // replace all newlines with newlines with the indentation
-      str = str.replace(/\n/g, `\n${indent}`);
-
       // we've got a newline before us so prepend on the indentation
-      if (this.endsWith("\n")) this.push(indent, true /* noIndent */);
+      if (this.endsWith("\n")) this.push(this.getIndent(), true /* noIndent */);
     }
 
     // see startTerminatorless() instance method
diff --git a/packages/babel-generator/src/generators/statements.js b/packages/babel-generator/src/generators/statements.js
index caea594d93..7bcc5a57da 100644
--- a/packages/babel-generator/src/generators/statements.js
+++ b/packages/babel-generator/src/generators/statements.js
@@ -206,12 +206,14 @@ export function DebuggerStatement() {
 
 function variableDeclarationIdent() {
   // "let " or "var " indentation.
-  this.push(",\n    ");
+  this.push(",\n");
+  this.push("    ");
 }
 
 function constDeclarationIdent() {
   // "const " indentation.
-  this.push(",\n      ");
+  this.push(",\n");
+  this.push("      ");
 }
 
 export function VariableDeclaration(node: Object, parent: Object) {