feat: add playwright

.gitignore

@@ -33,4 +33,10 @@ report.[0-9]_.[0-9]_.[0-9]_.[0-9]_.json
 # Finder (MacOS) folder config
 .DS_Store
 
-.astro
+.astro
+
+# Playwright
+/test-results/
+/playwright-report/
+/blob-report/
+/playwright/.cache/

package.json

@@ -9,21 +9,31 @@
     "build": "astro build",
     "preview": "astro preview",
     "astro": "astro",
-    "test": "vitest"
+    "test": "vitest",
+    "test:e2e": "playwright test"
   },
   "dependencies": {
     "@astrojs/react": "4.3.0",
     "@astrojs/svelte": "7.1.0",
     "@astrojs/vue": "^5.1.0",
+    "@gn8/alien-signals-react": "^0.1.1",
+    "@gn8/alien-signals-solid": "^0.1.1",
+    "@gn8/alien-signals-svelte": "^0.1.1",
+    "@gn8/alien-signals-vue": "^0.1.1",
     "@types/react": "19.1.10",
     "@types/react-dom": "19.1.7",
+    "alien-deepsignals": "^0.1.0",
+    "alien-signals": "^2.0.7",
     "astro": "5.13.2",
+    "install": "^0.13.0",
+    "npm": "^11.5.2",
     "react": "19.1.1",
     "react-dom": "19.1.1",
     "svelte": "5.38.2",
     "vue": "3.5.19"
   },
   "devDependencies": {
+    "@playwright/test": "^1.55.0",
     "@types/node": "24.3.0",
     "@types/react": "19.1.10",
     "@types/react-dom": "19.1.7",

playwright.config.ts

@@ -0,0 +1,79 @@
+import { defineConfig, devices } from "@playwright/test";
+
+/**
+ * Read environment variables from file.
+ * https://github.com/motdotla/dotenv
+ */
+// import dotenv from 'dotenv';
+// import path from 'path';
+// dotenv.config({ path: path.resolve(__dirname, '.env') });
+
+/**
+ * See https://playwright.dev/docs/test-configuration.
+ */
+export default defineConfig({
+  testDir: "./src/frontends/tests",
+  /* Run tests in files in parallel */
+  fullyParallel: true,
+  /* Fail the build on CI if you accidentally left test.only in the source code. */
+  forbidOnly: !!process.env.CI,
+  /* Retry on CI only */
+  retries: process.env.CI ? 2 : 0,
+  /* Opt out of parallel tests on CI. */
+  workers: process.env.CI ? 1 : undefined,
+  /* Reporter to use. See https://playwright.dev/docs/test-reporters */
+  reporter: "html",
+  /* Shared settings for all the projects below. See https://playwright.dev/docs/api/class-testoptions. */
+  use: {
+    /* Base URL to use in actions like `await page.goto('/')`. */
+    baseURL: "http://localhost:4321",
+
+    /* Collect trace when retrying the failed test. See https://playwright.dev/docs/trace-viewer */
+    trace: "on-first-retry",
+  },
+
+  /* Configure projects for major browsers */
+  projects: [
+    {
+      name: "chromium",
+      use: { ...devices["Desktop Chrome"] },
+    },
+
+    {
+      name: "firefox",
+      use: { ...devices["Desktop Firefox"] },
+    },
+
+    {
+      name: "webkit",
+      use: { ...devices["Desktop Safari"] },
+    },
+
+    /* Test against mobile viewports. */
+    // {
+    //   name: 'Mobile Chrome',
+    //   use: { ...devices['Pixel 5'] },
+    // },
+    // {
+    //   name: 'Mobile Safari',
+    //   use: { ...devices['iPhone 12'] },
+    // },
+
+    /* Test against branded browsers. */
+    // {
+    //   name: 'Microsoft Edge',
+    //   use: { ...devices['Desktop Edge'], channel: 'msedge' },
+    // },
+    // {
+    //   name: 'Google Chrome',
+    //   use: { ...devices['Desktop Chrome'], channel: 'chrome' },
+    // },
+  ],
+
+  /* Run your local dev server before starting the tests */
+  webServer: {
+    command: "npm run dev",
+    url: "http://localhost:4321",
+    reuseExistingServer: !process.env.CI,
+  },
+});

src/app/components/Highlight.astro

@@ -1,11 +1,4 @@
 ---
-interface Props {
-  react?: boolean;
-  svelte?: boolean;
-  vue?: boolean;
-  astro?: boolean;
-}
-
 const { react, svelte, vue, astro } = Astro.props;
 
 const frameworkName = Object.keys(Astro.props)[0];

src/app/components/SvelteRoot.svelte

@@ -1,7 +1,5 @@
 <script lang="ts">
   import HelloWorld from "src/frontends/svelte/HelloWorld.svelte";
-
-  //
 </script>
 
 <HelloWorld />

src/app/pages/index.astro

@@ -11,14 +11,14 @@ const title = "Multi-framework app";
 
 <Layout title={title}>
   <Highlight vue>
-    <VueRoot client:load />
+    <VueRoot client:only />
   </Highlight>
 
   <Highlight react>
-    <ReactRoot client:visible />
+    <ReactRoot client:only="react" />
   </Highlight>
 
   <Highlight svelte>
-    <SvelteRoot client:load />
+    <SvelteRoot client:only />
   </Highlight>
 </Layout>

src/frontends/react/HelloWorld.tsx

@@ -1,9 +1,26 @@
 import React from "react";
+import useShape from "../../ng-mock/js-land/frontendAdapters/react/useShape";
 
 export function HelloWorldReact() {
+  const state = useShape("Shape1", "");
+
+  window.reactState = state;
+  console.log("react render", state);
+
+  if (!state) return <>Loading state</>;
+
   return (
     <div>
       <p>Hello World from React!</p>
+      {state.name} lives at {state.address.street}
+      <p></p>
+      <button
+        onClick={() => {
+          state.name = `${state.name} ${state.name}`;
+        }}
+      >
+        Double name
+      </button>
     </div>
   );
 }

src/frontends/svelte/HelloWorld.svelte

@@ -1,7 +1,19 @@
 <script>
-  // Simple Svelte component
+  import useShape from "../../ng-mock/js-land/frontendAdapters/svelte/useShape";
+
+  const nestedObject = useShape("Shape1", null);
 </script>
 
 <div>
   <p>Hello World from Svelte!</p>
+
+  <pre>{JSON.stringify($nestedObject, null, 4)}</pre>
+  <button
+    on:click={() => {
+      window.svelteState = $nestedObject;
+      $nestedObject.name = $nestedObject.name.toUpperCase();
+    }}
+  >
+    upper-case name
+  </button>
 </div>

src/frontends/svelte/mount.ts

@@ -1,22 +0,0 @@
-// Simple Svelte-like component using vanilla JS
-export function mountSvelteComponent(element: HTMLElement) {
-  // Create the DOM structure that would be created by the Svelte component
-  element.innerHTML = `
-    <div style="
-      padding: 20px; 
-      border: 2px solid #000000ff; 
-      border-radius: 8px;
-      margin: 10px;
-      background-color: #fff5f5;
-    ">
-      <h2>Svelte Component</h2>
-      <p>Hello World from Svelte!</p>
-    </div>
-  `;
-
-  return {
-    $destroy: () => {
-      element.innerHTML = "";
-    },
-  };
-}

src/frontends/tests/reactiveCrossFramework.spec.ts

@@ -0,0 +1,10 @@
+import { test, expect } from "@playwright/test";
+
+test("components load", async ({ page }) => {
+  await page.goto("/");
+  await page.waitForSelector(".vue astro-island");
+
+  await expect(page.locator(".vue .title")).toHaveText("vue");
+  await expect(page.locator(".react .title")).toHaveText("react");
+  await expect(page.locator(".svelte .title")).toHaveText("svelte");
+});

src/frontends/vue/HelloWorld.vue

@@ -1,9 +1,29 @@
+<script setup lang="ts">
+  import type { WritableComputedRef } from 'vue';
+import useShape from '../../ng-mock/js-land/frontendAdapters/vue/useShape';
+
+  const shapeObj = useShape("Shape1", "null");
+  
+  window.vueState= shapeObj;
+
+  const setName = () => {
+    shapeObj.value.name = "Bobby"
+  }
+</script>
+
+
 <template>
   <div>
     <p>Hello World from Vue!</p>
-  </div>
+    <div v-if="shapeObj != null">
-</template>
+      <p>Type is <em>{{shapeObj.type}}</em> with street <em>{{shapeObj.address.street}}</em></p>
 
-<script setup lang="ts">
+      <button @click="setName">
-// Simple Vue component with composition API
+        Click to switch name
-</script>
+      </button>
+    </div>
+    <div v-else>
+      Loading state
+    </div>
+  </div>
+</template>

src/frontends/vue/mount.ts

@@ -1,8 +0,0 @@
-import { createApp } from "vue";
-import HelloworldVue from "./HelloWorld.vue";
-
-export function mountVueComponent(element: HTMLElement) {
-  const app = createApp(HelloworldVue);
-  app.mount(element);
-  return app;
-}

src/ng-mock/js-land/connector/applyDiff.ts

@@ -1,6 +1,9 @@
 import type { Diff } from "../types";
 
 /** Mock function to apply diffs. Just uses a copy of the diff as the new object. */
-export function applyDiff(currentState: object, diff: Diff): object {
+export function applyDiff(currentState: any, diff: Diff) {
-  return JSON.parse(JSON.stringify(diff));
+  const clone = JSON.parse(JSON.stringify(diff));
+  Object.keys(clone).forEach((k) => {
+    currentState[k] = clone[k];
+  });
 }

src/ng-mock/js-land/connector/createSignalObjectForShape.ts

@@ -0,0 +1,84 @@
+import updateShape from "src/ng-mock/wasm-land/updateShape";
+import type { Connection, Diff, Scope, Shape } from "../types";
+import requestShape from "src/ng-mock/wasm-land/requestShape";
+import { applyDiff } from "./applyDiff";
+import { batch, deepSignal, watch } from "alien-deepsignals";
+import { signal as createSignal, computed } from "alien-signals";
+
+type ReactiveShapeObject = object;
+
+type ShapeObjectSignal = ReturnType<
+  typeof createSignal<{
+    content: ReactiveShapeObject | null;
+  }>
+>;
+
+const openConnections: Partial<Record<Shape, ShapeObjectSignal>> = {};
+
+/**
+ * Create a signal for a shape object.
+ * The function returns a signal of a shape object in the form:
+ * `{content: <shapeObject>}`
+ **/
+export function createSignalObjectForShape(
+  shape: Shape,
+  scope?: Scope,
+  poolSignal = true
+) {
+  if (poolSignal && openConnections[shape]) return openConnections[shape];
+
+  // DeepSignal has a different API to alien-signals.
+  // Therefore, we need to create a "root signal" wrapper that is
+  // triggered on deepSignal changes.
+  const rootSignal = createSignal<{
+    content: ReactiveShapeObject | null;
+  }>({ content: null });
+
+  // State
+  let stopWatcher: any = null;
+  let suspendDeepWatcher = false;
+
+  const onUpdateFromDb = (diff: Diff, connectionId: Connection["id"]) => {
+    const rootSignalValue = rootSignal();
+    console.log("Update received", connectionId, diff);
+    // Set new value from applying the diffs to the old value.
+
+    suspendDeepWatcher = true;
+    // We need to replace the root signal for now, so this is redundant.
+    batch(() => {
+      if (!rootSignalValue) return; // This shouldn't happen but we make the compiler happy.
+      const { content: proxiedShapeObj } = rootSignalValue;
+      applyDiff(proxiedShapeObj, diff);
+
+      // We put the proxied object into a new object for the root signal to trigger.
+      rootSignal({ content: proxiedShapeObj });
+    });
+    suspendDeepWatcher = false;
+  };
+
+  // Do the actual db request.
+  requestShape(shape, scope, onUpdateFromDb).then(
+    ({ connectionId, shapeObject }) => {
+      // Create a deepSignal to put into the vanilla alien-signal.
+      const proxiedShapeObj = deepSignal(shapeObject);
+
+      // Notify DB on changes.
+      stopWatcher = watch(
+        proxiedShapeObj,
+        (newVal, oldVal, onCleanup) => {
+          // Don't update when applying changes from db diffs from the db.
+          if (!suspendDeepWatcher) updateShape(connectionId, newVal);
+        },
+        { deep: true }
+      );
+
+      // Update the root signal.
+      rootSignal({ content: proxiedShapeObj });
+    }
+  );
+
+  if (poolSignal) openConnections[shape] = rootSignal;
+
+  // TODO: Dispose deepSignal root signal disposal.
+  return rootSignal;
+}

src/ng-mock/js-land/connector/ngSignals.ts

@@ -1,31 +0,0 @@
-import handleShapeUpdate from "src/ng-mock/wasm-land/handleShapeUpdate";
-import type { Connection, Diff, Scope, Shape } from "../types";
-import handleShapeRequest from "src/ng-mock/wasm-land/handleShapeRequest";
-import { applyDiff } from "./applyDiff";
-
-export async function createSignalObjectForShape(shape: Shape, scope?: Scope) {
-  const ret: {
-    state?: any;
-    connectionId?: Connection["id"];
-    update: (diff: Diff) => Promise<void>;
-  } = {
-    async update(diff) {
-      if (!ret.connectionId)
-        throw new Error("Connection not established yet for shape" + shape);
-      await handleShapeUpdate(ret.connectionId, diff);
-    },
-  };
-
-  const onDbUpdate = (diff: Diff) => {
-    ret.state = applyDiff(ret.state || {}, diff);
-  };
-
-  await handleShapeRequest(shape, onDbUpdate).then(
-    ({ connectionId, shapeObject }) => {
-      ret.state = shapeObject;
-      ret.connectionId = connectionId;
-    }
-  );
-
-  return ret;
-}

src/ng-mock/js-land/frontendAdapters/react/useShape.ts

@@ -0,0 +1,22 @@
+import { useSignal } from "@gn8/alien-signals-react";
+import { useMemo, useRef } from "react";
+import { createSignalObjectForShape } from "src/ng-mock/js-land/connector/createSignalObjectForShape";
+import type { Scope, Shape } from "src/ng-mock/js-land/types";
+
+// TODO: The universe-signal library causes two renders on change instead of one.
+// Find a fix
+
+const useShape = (shape: Shape, scope: Scope) => {
+  const signalOfShape = useMemo(() => {
+    console.log("react memo called...");
+    return createSignalObjectForShape(shape, scope);
+  }, [shape, scope]);
+
+  const [{ content: shapeObject }, setShapeObject] = useSignal(signalOfShape);
+
+  // We don't need the setter.
+  // The object is recursively proxied and changes are recorded there.
+  return shapeObject;
+};
+
+export default useShape;

src/ng-mock/js-land/frontendAdapters/svelte/useShape.ts

@@ -0,0 +1,16 @@
+import { derived } from "svelte/store";
+import { useSignal } from "@gn8/alien-signals-svelte";
+import { createSignalObjectForShape } from "src/ng-mock/js-land/connector/createSignalObjectForShape";
+import type { Scope, Shape } from "src/ng-mock/js-land/types";
+
+const useShape = (shape: Shape, scope: Scope) => {
+  const signalOfShape = createSignalObjectForShape(shape, scope);
+
+  const writeableStoreForShape = useSignal(signalOfShape);
+
+  // Get the content "deepSignal"
+  const content = derived(writeableStoreForShape, (value) => value.content);
+  return content;
+};
+
+export default useShape;

src/ng-mock/js-land/frontendAdapters/vue/useShape.ts

@@ -0,0 +1,14 @@
+import { useSignal } from "@gn8/alien-signals-vue";
+import { createSignalObjectForShape } from "src/ng-mock/js-land/connector/createSignalObjectForShape";
+import type { Scope, Shape } from "src/ng-mock/js-land/types";
+import { computed } from "vue";
+const useShape = (shape: Shape, scope: Scope) => {
+  const signalOfShape = createSignalObjectForShape(shape, scope);
+
+  const refOfShape = useSignal(signalOfShape);
+
+  // TODO: Maybe `refOfShape.value.content` works too?
+  return computed(() => refOfShape.value.content);
+};
+
+export default useShape;

src/ng-mock/tests/updatesWithWasm.test.ts

@@ -1,23 +1,30 @@
 import { expect, test } from "vitest";
-import { createSignalObjectForShape } from "../js-land/connector/ngSignals";
+import { createSignalObjectForShape } from "../js-land/connector/createSignalObjectForShape";
 
+const wait = (ms: number) => new Promise((resolve) => setTimeout(resolve, ms));
+
+// TODO: Redo
 test("shape object notification comes back to others", async () => {
-  const object1 = await createSignalObjectForShape("Shape1");
+  const object1 = createSignalObjectForShape("Shape1");
-  const object2 = await createSignalObjectForShape("Shape1");
+  const object2 = createSignalObjectForShape("Shape1");
+
+  const object3 = createSignalObjectForShape("Shape2");
+  const object4 = createSignalObjectForShape("Shape2");
 
-  const object3 = await createSignalObjectForShape("Shape2");
+  wait(50);
-  const object4 = await createSignalObjectForShape("Shape2");
 
   // Update object 1 and expect object 2 to update as well.
-  await object1.update({ name: "Updated name from object1" });
+  object1()!.name = "Updated name from object1";
 
-  expect(object2.state?.name).toBe("Updated name from object1");
+  wait(30);
+  expect(object2()!.name).toBe("Updated name from object1");
 
   // Expect object of different shape not to have changed.
-  expect(object3.state?.name).toBe("Niko's cat");
+  expect(object3().name).toBe("Niko's cat");
 
   // Update object 4 and expect object 3 with same shape to have updated.
-  await object4.update({ name: "Updated name from object4" });
+  object4()!.name = "Updated name from object4";
 
-  expect(object3.state?.name).toBe("Updated name from object4");
+  wait(30);
+  expect(object3()!.name).toBe("Updated name from object4");
 });

src/ng-mock/wasm-land/requestShape.ts

@@ -1,6 +1,5 @@
-import { randomUUID } from "crypto";
 import * as shapeManager from "./shapeManager";
-import type { WasmConnection, Diff } from "./types";
+import type { WasmConnection, Diff, Scope } from "./types";
 import type { Shape } from "../js-land/types";
 
 const mockShapeObject1 = {
@@ -20,19 +19,23 @@ const mockShapeObject2 = {
   numberOfHomes: 3,
   address: {
     street: "Niko's street",
-    compartment: 2,
+    houseNumber: "15",
+    floor: 0,
   },
 };
 
-export default async function handleShapeRequest(
+let connectionIdCounter = 1;
+
+export default async function requestShape(
   shape: Shape,
+  scope: Scope | undefined,
   callback: (diff: Diff, connectionId: WasmConnection["id"]) => void
 ): Promise<{
   connectionId: string;
   shapeObject: object;
 }> {
   const connection: WasmConnection = {
-    id: randomUUID(),
+    id: String(connectionIdCounter++),
     shape,
     // Create a deep copy to prevent accidental by-reference changes.
     state: JSON.parse(

src/ng-mock/wasm-land/updateShape.ts

@@ -1,13 +1,15 @@
 import * as shapeManager from "./shapeManager";
 import type { WasmConnection, Diff } from "./types";
 
-export default async function handleShapeUpdate(
+export default async function updateShape(
   connectionId: WasmConnection["id"],
   diff: Diff
 ) {
   const connection = shapeManager.connections.get(connectionId);
   if (!connection) throw new Error("No Connection found.");
 
+  console.log("BACKEND: Received update request from ", connectionId);
+
   const newState = shapeManager.applyDiff(connection.state, diff);
   connection.state = newState;