Fix deferred export of array binding pattern #10798
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| export function isArrayBindingElement(node: Node): node is ArrayBindingElement { | ||
| const kind = node.kind; | ||
| return kind === SyntaxKind.BindingElement | ||
| || kind === SyntaxKind.OmittedExpression; |
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It's kind of weird that a binding element uses an omitted expression
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Looks good to me 👍 |
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We parse the missing element as an
OmittedExpressionbut cast it to aBindingElementeven though it does not have the same shape. The result was an issue where the module transformer did not account for this case and code like the following would result in an exception:This PR makes the expected types more explicit and fixes the incorrect case.
Fixes #10778