Function containsNarrowableReference

internal/binder/binder.go:2620–2631

(expr *ast.Node)

}

func containsNarrowableReference(expr *ast.Node) bool {
	if isNarrowableReference(expr) {
		return true
	}
	if expr.Flags&ast.NodeFlagsOptionalChain != 0 {
		switch expr.Kind {
		case ast.KindPropertyAccessExpression, ast.KindElementAccessExpression, ast.KindCallExpression, ast.KindNonNullExpression:
			return containsNarrowableReference(expr.Expression())
		}
	}
	return false
}

func isNarrowableReference(node *ast.Node) bool {
	switch node.Kind {