gleam-lang/gleam

Code action to generate new type

Closed

#5,389 opened on Feb 23, 2026

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 (6 comments) (0 reactions) (0 assignees)Rust (960 forks)batch import
help wanted

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Description

The language server already allows to create new functions when needed. It would be nice if it allowed to do the same thing with types too. For example:

type Wibble {
  Wibble(Wobble)
//       ^^^^^^ Doesn't exist, trigger code action
}

type Wibble {
  Wibble(Wobble)
}

+ type Wobble

Contributor guide

Research direction
Investigate how the existing code action for generating new functions is implemented in the language server, then extend it to handle types. Look at the handler registration and the logic for detecting undefined type names.
Tech stack
rust
Domain
developer experiencetooling
Issue type
Feature
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-3 hours
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
Active
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Clear
Prerequisites
RustGleam
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
70