rescript-lang / rescript-lang/rescript
Invalid function call in generated output
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- Dominant language
- OCaml
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Description
// External binding to global "test"
@val external _test: (string, (unit => unit) => unit) => unit = "test"
// Wrapper function shadows the external's target name
let test = (name, callback) => {
_test(name, _done => callback())
}
// BUG: This should call global test(), but calls local wrapper instead
let broken = () => {
_test("async", done => done())
}
Generates:
// Generated by ReScript, PLEASE EDIT WITH CARE
function test(name, callback) {
globalThis.test(name, _done => callback());
}
function broken() {
test("async", done => done());
}
export {
test,
broken,
}
/* No side effect */
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Reproduce issue 8153 using the embedded ReScript source and inspect the compiler’s generated JavaScript around test and broken. Compare the emitted call with the external binding’s global target; done means broken() preserves the intended globalThis.test() call rather than resolving to the local wrapper.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- javascript, ocaml
- Domain
- compilers
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Quiet
- Clarity
- Mostly clear
- Newbie friendliness
- 48/100