From 997181390d61ebe6221709400d9e699f403c7f6b Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Nicol=C3=B2=20Ribaudo?= <nicolo.ribaudo@gmail.com>
Date: Wed, 20 Jul 2022 13:14:36 +0200
Subject: [PATCH] Fix regression

---
 packages/babel-parser/src/tokenizer/index.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/packages/babel-parser/src/tokenizer/index.js b/packages/babel-parser/src/tokenizer/index.js
index 39d22075a6fe..46d74479b281 100644
--- a/packages/babel-parser/src/tokenizer/index.js
+++ b/packages/babel-parser/src/tokenizer/index.js
@@ -1120,7 +1120,7 @@ export default class Tokenizer extends CommentsParser {
     radix: number,
     len?: number,
     forceLen?: boolean,
-    allowNumSeparator?: boolean | "bail",
+    allowNumSeparator: boolean | "bail" = true,
   ): number | null {
     const { n, pos } = readInt(
       this.input,