gleam-lang/gleam

Re-export types and values from other modules

Open

#614 opened on May 28, 2020

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 (27 comments) (13 reactions) (0 assignees)Rust (960 forks)batch import
discussionhelp wanted

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Description

It would be nice to be able to re-export a type or function from another module.

Here's an idea for a syntax:

// one.gleam
pub type MyType {
  MyConstructor
}

pub fn my_function() -> Nil {
  Nil
}

// two.gleam

import two.{pub MyType, pub MyConstructor, pub my_function}

Questions

Should it be permitted to export only a subset of a type's constructors? This would mean it would not possible for users to pattern match on all records as only some have been exported. The above syntax would allow that.

Contributor guide

Research direction
Study Gleam's module resolution and AST representation to add re export syntax.
Tech stack
rust
Domain
developer experience
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.
1-2 days
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.
50