From 416e9aba39b6faf3ab0443fdd5c7eec2c66f8037 Mon Sep 17 00:00:00 2001
From: Borales <bordun.alexandr@gmail.com>
Date: Sun, 22 Oct 2017 00:45:40 +0200
Subject: [PATCH] Providing File.has method for core/transformation package

---
 packages/babel-core/src/transformation/file/file.js | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/packages/babel-core/src/transformation/file/file.js b/packages/babel-core/src/transformation/file/file.js
index 79ef660161..2c026fd2c5 100644
--- a/packages/babel-core/src/transformation/file/file.js
+++ b/packages/babel-core/src/transformation/file/file.js
@@ -56,6 +56,10 @@ export default class File {
     return this._map.get(key);
   }
 
+  has(key: mixed): boolean {
+    return this._map.has(key);
+  }
+
   getModuleName(): ?string {
     const opts = this.opts;
     if (!opts.moduleIds) {