y21 / y21/dash

Confusing error for `super()` in baseclass

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Dominant language
Rust
Stars
54
Forks
2
PR merge metrics
No merged PRs in 30d

Description

new (class { constructor() { super(); } })()
TypeError: super() must be called exactly once in a subclass constructor
  at <anonymous>
  at <anonymous>

This error is confusing/wrong. It is called exactly once, this just isn't a subclass

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First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by running the provided JavaScript reproducer in this Rust implementation and tracing the handling of super() in a base-class constructor. Identify where the reported TypeError text is selected; done means the error accurately explains that super() was used outside a subclass constructor.

Written by the indexing model from the issue text.

Assessment

Tech stack
javascript, rust
Domain
compilers
Issue type
Bug
Difficulty
3/5
Estimated time
1-2 days
Activity status
Quiet
Clarity
Mostly clear
Newbie friendliness
55/100

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