Remove Super from Expression alias#14750
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nicolo-ribaudo merged 4 commits intobabel:mainfrom Jul 13, 2022
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JLHwung
commented
Jul 12, 2022
| it("should not throw error on duplicate class and function declaration", () => { | ||
| const ast = [ | ||
| t.classDeclaration(t.identifier("A"), t.super(), t.classBody([]), []), | ||
| t.classDeclaration(t.identifier("A"), null, t.classBody([]), []), |
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class A extends super {} is invalid.
JLHwung
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Jul 12, 2022
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| callee.object = t.assignmentExpression( | ||
| "=", | ||
| temp, | ||
| // object must not be Super when `temp` is an identifier | ||
| callee.object as t.Expression, |
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It is pretty annoying that we can't have TS narrowed down the object type in such pattern const foo = scope.maybeGenerateMemoised(object); if (foo) { // object must not be Super | TopicReference ... }. I tried conditional type like
maybeGenerateMemoised<T extends t.Node>(object: T): T extends t.Super ? null : t.IdentifierTS can infer maybeGenerateMemoised returns null when object is Super, but it can't infer T from the return results.
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liuxingbaoyu
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Jul 13, 2022
nicolo-ribaudo
approved these changes
Jul 13, 2022
Super from Expression alias
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