✅ test: Can convert basic arrays

src/utility.spec.ts

@@ -0,0 +1,35 @@
+import * as Y from "yjs";
+import { arrayToYArray, } from "./utility";
+
+describe("arrayToYArray", () =>
+{
+  let ydoc: Y.Doc = new Y.Doc();
+  let ymap: Y.Map<any> = new Y.Map();
+
+  beforeEach(() =>
+  {
+    ydoc = new Y.Doc();
+    ymap = ydoc.getMap(`tmp`);
+  });
+
+  afterEach(() =>
+  {
+    ydoc.destroy();
+  });
+
+  it.each([
+    [
+      []
+    ],
+    [
+      [ 1 ]
+    ],
+    [
+      [ 1, 2, 3, 4 ]
+    ]
+  ])("Creates a YArray from %s.", (array: number[]) =>
+  {
+    ymap.set("array", arrayToYArray(array));
+    expect(ymap.get("array").toJSON()).toEqual(array);
+  });
+});

src/utility.ts

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+import * as Y from "yjs";
+
+export const arrayToYArray = (array: any[]): Y.Array<any> =>
+{
+  const yarray = new Y.Array();
+
+  array.forEach((value) =>
+    yarray.push([ value ]));
+
+  return yarray;
+};