JS target: SyntaxError: Identifier '$2' has already been declared on Node 24

[tylerbutler]

First off, thanks for glint — it's a great library! 🎉

We're hitting a JS runtime error when using glint v1.2.1 (transitively via startest) with Gleam 1.14.0 and Node.js v24.14.0:

file:///…/build/dev/javascript/glint/glint.mjs:1932
  let $2 = $list.partition(
      ^

SyntaxError: Identifier '$2' has already been declared

The generated glint.mjs contains a duplicate let $2 binding, which Node 24 rejects. Erlang target works fine.

Environment:

• Gleam 1.14.0
• Node.js v24.14.0
• glint v1.2.1

Are there plans to release an update with Gleam 1.14 compatibility? Happy to help test if useful.

[TanklesXL]

Hi there, I'm not sure if this is an issue with glint itself, I suspect this might be a compiler code generation issue. I'll poke around a bit and get back to you!

cc @CrowdHailer since I know you also ran into this recently

[TanklesXL]

seems like this is a known issue: gleam-lang/gleam#5467