From 4597db5efb625664731f057525a2d657f9cf7264 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Hu=C3=A1ng=20J=C3=B9nli=C3=A0ng?= <i@jhuang.me>
Date: Thu, 5 Sep 2019 12:46:27 -0400
Subject: [PATCH] polish error message

---
 packages/babel-core/src/config/full.js | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/packages/babel-core/src/config/full.js b/packages/babel-core/src/config/full.js
index 5ba198d91d17..d38aec4ba698 100644
--- a/packages/babel-core/src/config/full.js
+++ b/packages/babel-core/src/config/full.js
@@ -289,10 +289,9 @@ const validateIfOptionNeedsFilename = (
       : "/* your preset */";
     throw new Error(
       [
-        `Preset ${formattedPresetName} requires a filename be set.`,
-        `For example, if you are calling Babel directly`,
+        `Preset ${formattedPresetName} requires a filename to be set when babel is called directly,`,
         `\`\`\``,
-        `babel.transform(code, { filename: 'file.js', presets: [${formattedPresetName}] });`,
+        `babel.transform(code, { filename: 'file.ts', presets: [${formattedPresetName}] });`,
         `\`\`\``,
         `See https://babeljs.io/docs/en/options#filename for more information.`,
       ].join("\n"),