2.7.1

• Compatibility with Node 22 and later: stack trace patching and source maps now work correctly, and the new with { type: 'json' } import attributes syntax is supported alongside assert.
• Numeric literals now support a capital E in scientific notation, and method calls on numbers with underscores such as 1_000.toString() now compile correctly.
• Performance improvements to the flatten helper (no longer recursive), checkShebangLine and the number-matching regular expressions.
• Documentation fixes: code snippets now run correctly again, and a hover line-height shift was fixed.
• Continuous integration now tests Node 16 through 26.

New Contributors

• @cclauss made their first contribution in #5450
• @Connormiha made their first contribution in #5452
• @abhayagarwal-dev made their first contribution in #5503

Full Changelog: https://github.com/jashkenas/coffeescript/compare/2.7.0…2.7.1