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more rigorous implements-clause check

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Arthur Ozga 2017-03-01 11:23:49 -08:00
parent 207b7b0449
commit d878f80f90
1 changed files with 2 additions and 1 deletions
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3
src/compiler/utilities.ts
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@ -3126,8 +3126,9 @@ namespace ts {
return tryGetClassExtendingExpressionWithTypeArguments(node) !== undefined;
}
export function isExpressionWithTypeArgumentsInClassImplementsClause(node: Node): boolean {
export function isExpressionWithTypeArgumentsInClassImplementsClause(node: Node): node is ExpressionWithTypeArguments {
return node.kind === SyntaxKind.ExpressionWithTypeArguments
&& isEntityNameExpression((node as ExpressionWithTypeArguments).expression)
&& node.parent
&& (<HeritageClause>node.parent).token === SyntaxKind.ImplementsKeyword
&& node.parent.parent