Fourth version of our transform, which keeps all other decorators

transform-value.v4.ts

// Constants:
// ...
const OTHER_DECORATORS_QUERY = `Decorator:has(Decorator > CallExpression[expression.name!="Value"])`;

export function transformer (source: SourceFile): TransformerFactory<Node> {
    // ...
}

export function valueDecoratorToGetterAndSetterFactory (nodes: Array<Node>): TransformerFactory<Node> {
    return function (context: TransformationContext): Transformer<Node> {
        // ...
        function visit (node: Node): Node | Array<Node> {
            if (nodes.includes(node)) {
                // Create the base structure of the new getter/setter:
                // ...

                // Re-attach any other decorators:
                getter.decorators = tsquery(node, OTHER_DECORATORS_QUERY);

                // Return the new AST nodes to replace the old one:
                // ...
            }
        }
    };
}