💻

• Would you like to work on a fix?

How are you using Babel?

Other (Next.js, Gatsby, vue-cli, ...)

Input code

1_1

Configuration file name

No response

Configuration

No response

Current and expected behavior

Currently throws error:

/repl.jsx: A numeric separator is only allowed between two digits. (1:1)

> 1 | 1_1
    |  ^

Expected output:

"use strict";

11;

Environment

Babel REPL version 7.17.8

Possible solution

No response

Additional context

Works in 7.17.6, broken in 7.17.7

I'm guessing #14338 broke it