diff --git a/packages/babel-generator/package.json b/packages/babel-generator/package.json
index 418f105dc6..c55b973d6d 100644
--- a/packages/babel-generator/package.json
+++ b/packages/babel-generator/package.json
@@ -17,7 +17,8 @@
     "detect-indent": "^4.0.0",
     "jsesc": "^1.3.0",
     "lodash": "^4.2.0",
-    "source-map": "^0.5.0"
+    "source-map": "^0.5.0",
+    "trim-right": "^1.0.1"
   },
   "devDependencies": {
     "babel-helper-fixtures": "^6.22.0",
diff --git a/packages/babel-generator/src/buffer.js b/packages/babel-generator/src/buffer.js
index d1187be275..3c53ef666d 100644
--- a/packages/babel-generator/src/buffer.js
+++ b/packages/babel-generator/src/buffer.js
@@ -1,5 +1,5 @@
 import type SourceMap from "./source-map";
-import trimEnd from "lodash/trimEnd";
+import trimRight from "trim-right";
 
 const SPACES_RE = /^[ \t]+$/;
 
@@ -40,7 +40,9 @@ export default class Buffer {
 
     const map = this._map;
     const result = {
-      code: trimEnd(this._buf.join("")),
+      // Whatever trim is used here should not execute a regex against the
+      // source string since it may be arbitrarily large after all transformations
+      code: trimRight(this._buf.join("")),
       map: null,
       rawMappings: map && map.getRawMappings(),
     };