FuelLabs/sway

Enforce type annotations for constants

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#5,758 opened on Mar 20, 2024

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ODHack12bugcompiler: frontendgood first issueteam:compiler

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Description

We should ensure all const declarations have explicitly named types and provide a helpful error message when they do not.

const OFFSET_TOKEN_ADDRESS = 32; // forbidden
const OFFSET_TOKEN_ADDRESS: u64 = 32; // allowed

Contributor guide

Research direction
Implement a compiler pass in the Sway parser or type checker that detects const declarations without explicit type annotations and emits a helpful error message.
Tech stack
rust
Domain
compilers
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.
Half day
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
Rust
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
70