feat(json-crdt-extensions): 🎸 setup ModelWithExt static class

src/json-crdt-extensions/ModelWithExt.ts

@@ -0,0 +1,35 @@
+import * as clock from '../json-crdt-patch/clock';
+import {NodeBuilder} from "../json-crdt-patch";
+import {Extensions} from "../json-crdt/extensions/Extensions";
+import {Model} from "../json-crdt/model";
+import {SchemaToJsonNode} from "../json-crdt/schema/types";
+import {CntExt} from './cnt';
+import {MvalExt} from "./mval";
+import {PeritextExt} from "./peritext";
+
+const extensions = new Extensions();
+
+extensions.register(CntExt);
+extensions.register(MvalExt);
+extensions.register(PeritextExt);
+
+export class ModelWithExt {
+  public static readonly create = <S extends NodeBuilder>(
+    schema?: S,
+    sidOrClock: clock.ClockVector | number = Model.sid(),
+  ): Model<SchemaToJsonNode<S>> => {
+    const model = Model.create(schema, sidOrClock);
+    model.ext = extensions;
+    return model;
+  };
+
+  public static readonly load = <S extends NodeBuilder>(
+    data: Uint8Array,
+    sid?: number,
+    schema?: S,
+  ): Model<SchemaToJsonNode<S>> => {
+    const model = Model.load(data, sid, schema);
+    model.ext = extensions;
+    return model;
+  };
+}

src/json-crdt-extensions/peritext/__tests__/extension.spec.ts

@@ -0,0 +1,11 @@
+import {PeritextExt} from "..";
+import {ModelWithExt} from "../../ModelWithExt";
+
+test('..', () => {
+  const model = ModelWithExt.create();
+  model.api.root({
+    text: PeritextExt.new('Hello, world\n'),
+  });
+
+  console.log('' + model);
+});

src/json-crdt/model/Model.ts

@@ -224,6 +224,7 @@ export class Model<N extends JsonNode = JsonNode<any>> implements Printable {
    * custom data types on top of the JSON CRDT protocol.
    *
    * @ignore
+   * @todo Allow this to be `undefined`.
    */
   public ext: Extensions = new Extensions();