[core] NodeReference type for references to nodes

[bharatkashyap]

• I have followed (at least) the PR section of the contributing guide.

• Add a new NodeReference type to track references to nodes

• In preparation for Allow duplicating apps #658

[render]

Your Render PR Server URL is https://toolpad-pr-720.onrender.com.

Follow its progress at https://dashboard.render.com/web/srv-cbk1c5441ls1l3otuuc0.

[Janpot]

Looking good. Would it make sense to abstract all .$$ref access behind

// ./appDom.js
export function ref(nodeId: NodeId): NodeReference;
export function deref(ref: NodeReference): NodeId;

[bharatkashyap]

Looking good. Would it make sense to abstract all .$$ref access behind

// ./appDom.js
export function ref(nodeId: NodeId): NodeReference;
export function deref(ref: NodeReference): NodeId;

Would this look something like:

//ToolpadApp.tsx

- navigateToPage(page.$$ref);
+ navigateToPage(appDom.deref(page));

[Janpot]

Would this look something like

Exactly, hiding away the implementation details

[Janpot]

👍 nice