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• Would you like to work on a fix?

How are you using Babel?

Programmatic API (babel.transform, babel.parse)

Input code

After moving everything over to the WeakMap system, I forgot to remove the declaration, so the latest release of Babel includes an undefined index property: https://github.com/babel/babel/blob/main/packages/babel-parser/src/util/location.js#L13

Apologies! Should I just do a commit removing it?

Configuration file name

No response

Configuration

No response

Current and expected behavior

Expected: Shouldn't have an index property
Current: Has an index property.

Environment

• Babel: 7.16.10

Possible solution

No response

Additional context

No response