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Allow trailing comma after rest parameter in TSDeclareFunction (#13101)

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* fix(ts): allow trailing comma after rest parameter in `TSDeclareFunction`

* Apply code review changes

Co-Authored-By: Nicolò Ribaudo <7000710+nicolo-ribaudo@users.noreply.github.com>
This commit is contained in:
Federico Ciardi
2021-04-06 18:36:17 +02:00
committed by GitHub
parent 6b57145d38
commit 42e630e8a2
3 changed files with 61 additions and 0 deletions
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12
packages/babel-parser/src/plugins/typescript/index.js
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@@ -2789,6 +2789,18 @@ export default (superClass: Class<Parser>): Class<Parser> =>
return super.parseMaybeDecoratorArguments(expr);
}
checkCommaAfterRest(close) {
if (
this.state.isDeclareContext &&
this.match(tt.comma) &&
this.lookaheadCharCode() === close
) {
this.next();
} else {
super.checkCommaAfterRest(close);
}
}
// === === === === === === === === === === === === === === === ===
// Note: All below methods are duplicates of something in flow.js.
// Not sure what the best way to combine these is.