Inline shebang-regex (#4650)

packages/babel-core/package.json

@@ -42,7 +42,6 @@
     "path-exists": "^1.0.0",
     "path-is-absolute": "^1.0.0",
     "private": "^0.1.6",
-    "shebang-regex": "^1.0.0",
     "slash": "^1.0.0",
     "source-map": "^0.5.0"
   },

packages/babel-core/src/transformation/file/index.js

@@ -7,7 +7,6 @@ import convertSourceMap from "convert-source-map";
 import OptionManager from "./options/option-manager";
 import type Pipeline from "../pipeline";
 import PluginPass from "../plugin-pass";
-import shebangRegex from "shebang-regex";
 import { NodePath, Hub, Scope } from "babel-traverse";
 import sourceMap from "source-map";
 import generate from "babel-generator";
@@ -26,6 +25,8 @@ import resolve from "../../helpers/resolve";
 import blockHoistPlugin from "../internal-plugins/block-hoist";
 import shadowFunctionsPlugin from "../internal-plugins/shadow-functions";
 
+const shebangRegex = /^#!.*/;
+
 const INTERNAL_PLUGINS = [
   [blockHoistPlugin],
   [shadowFunctionsPlugin]