Handle const binding elements with initializers correctly
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@ -3117,7 +3117,8 @@ namespace ts {
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// pattern. Otherwise, it is the type any.
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function getTypeFromBindingElement(element: BindingElement, includePatternInType?: boolean, reportErrors?: boolean): Type {
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if (element.initializer) {
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return getBaseTypeOfLiteralType(checkExpressionCached(element.initializer));
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const exprType = checkExpressionCached(element.initializer);
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return getCombinedNodeFlags(element) & NodeFlags.Const ? exprType : getBaseTypeOfLiteralType(exprType);
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}
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if (isBindingPattern(element.name)) {
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return getTypeFromBindingPattern(<BindingPattern>element.name, includePatternInType, reportErrors);
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