CoffeeScript 2.7.1 released!

NewsBot · 25 October 2026 19:21

CoffeeScript 2.7.1 has been released.

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: Comparing main...2.7.0 · jashkenas/coffeescript · GitHub…2.7.1

Link: Release 2.7.1 · jashkenas/coffeescript · GitHub