rescript-lang / rescript-lang/rescript

Array.length > 0 outputs [].length !== 0

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Dominant language
OCaml
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Merged PRs (30d)
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Description

Contributor guide

Open the contributing guide

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 with the linked ReScript playground reproduction and inspect the generated JavaScript for the Array.length > 0 expression. Trace the compiler path responsible for this output, then verify that the expression produces a boolean comparison rather than an array-length property comparison.

Written by the indexing model from the issue text.

Assessment

Tech stack
javascript, ocaml
Domain
compilers
Issue type
Bug
Difficulty
3/5
Estimated time
1-2 days
Activity status
Quiet
Clarity
Mostly clear
Newbie friendliness
48/100

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