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Fix exception rethrow #6933

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@DZakh DZakh commented Aug 4, 2024

Fixes #6929

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There are a few places to fix, but this is how I see the solution for the issue.

throw new Error(exn.RE_EXN_ID, {
cause: exn
});
throw exn;
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It should throw raw_exn instead

Comment on lines 94 to 97
catch (raw_exn){
let exn = Caml_js_exceptions.internalToOCamlException(raw_exn);
if (exn.RE_EXN_ID === A) {
if (exn._1 === 3) {
return;
}
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I see it worth renaming to:

Suggested change
catch (raw_exn){
let exn = Caml_js_exceptions.internalToOCamlException(raw_exn);
if (exn.RE_EXN_ID === A) {
if (exn._1 === 3) {
return;
}
catch (exn) {
let exnCause = Caml_js_exceptions.internalExnToCause(exn);
if (exnCause.RE_EXN_ID === A) {
if (exnCause._1 === 3) {
return;
}
throw exn

_1: 3
};
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This should be generated as new Error("A", { cause: {...} }) instead

@DZakh DZakh force-pushed the fix-exn-rethrow branch from 95c428f to b331607 Compare August 4, 2024 17:28
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Successfully merging this pull request may close these issues.

v12-alpha: The raise call started recreating exn, which breaks try/catch
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