From 9232e8b4058e2cd6235bfd230cb7b1ca684af1d7 Mon Sep 17 00:00:00 2001
From: Logan Smyth <loganfsmyth@gmail.com>
Date: Mon, 3 Sep 2018 18:44:10 -0700
Subject: [PATCH] Validate the type of the 'version' option for
 transform-runtime.

---
 packages/babel-plugin-transform-runtime/src/index.js | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/packages/babel-plugin-transform-runtime/src/index.js b/packages/babel-plugin-transform-runtime/src/index.js
index 88fe373cc0..7fb69f49d5 100644
--- a/packages/babel-plugin-transform-runtime/src/index.js
+++ b/packages/babel-plugin-transform-runtime/src/index.js
@@ -72,6 +72,9 @@ export default declare((api, options, dirname) => {
         `but got ${JSON.stringify(corejsVersion)}.`,
     );
   }
+  if (typeof runtimeVersion !== "string") {
+    throw new Error(`The 'version' option must be a version string.`);
+  }
 
   function has(obj, key) {
     return Object.prototype.hasOwnProperty.call(obj, key);