[Bug]: Updating @babel/core from 7.17.8 to 7.17.9 caused code to be transpiled incorrectly..

[jasonk]

💻

• Would you like to work on a fix?

How are you using Babel?

@babel/cli

Input code

I tried to reproduce this in the REPL, but 7.17.10 isn't an option there and that's the only version where I've seen this happen.

Configuration file name

babel.config.js

Configuration

No response

Current and expected behavior

I have this simple method that produces a get function that will be used to build an accessor. It' simple enough that up through 7.17.8 it came out of the transpiler with only whitespace changes:

makeGetter() {
  const wrapper = this;
  return function get() { return wrapper.getInfo( this ); };
}

After updating @babel/core from 7.17.8 to 7.17.10 it's getting transpiled to this:

  makeGetter() {
    return function get() {
      return this.getInfo(this);
    };
  }

Environment

@babel/core - 7.17.10
node v16.14.0

Possible solution

No response

Additional context

No response

[babel-bot]

Hey @jasonk! We really appreciate you taking the time to report an issue. The collaborators on this project attempt to help as many people as possible, but we're a limited number of volunteers, so it's possible this won't be addressed swiftly.

If you need any help, or just have general Babel or JavaScript questions, we have a vibrant Slack community that typically always has someone willing to help. You can sign-up here for an invite.

[jasonk]

After some additional testing I've determined this actually started with @babel/core 7.17.9 although it still occurs in 7.17.10 as well.

[JLHwung]

It seems to me duplicate of babel/minify#1028. Did you use babel-minify plugins?