What is the Neural Link?

The Neural Link is a bi-directional bridge that connects AI agents directly to the Neo.mjs runtime. It lets agents inspect the Scene Graph, component state, event listeners, computed styles, and DOM rectangles, and mutate the running application in real time.

Why is Neo.mjs called an Application Engine instead of a framework?

Neo.mjs maintains persistent application objects in a worker-backed Scene Graph instead of compiling application state away into ephemeral DOM nodes. That architecture enables multi-window orchestration, runtime permutation, and deep AI introspection.

What is Context Engineering?

Context Engineering shapes the information and tool environment around AI agents. Neo.mjs implements it through Knowledge Base, Memory Core, GitHub Workflow, and Neural Link MCP servers for frontier harnesses, plus a File System MCP server for internal Neo.ai.Agent local loops.

What is the Neo.mjs Agent OS?

The Neo.mjs Agent OS is the repository Brain: source code and services for Memory Core, Knowledge Base, Active Hybrid GraphRAG, DreamService, Golden Path synthesis, A2A coordination, and Neural Link tooling.

Frontmatter

id	8619
title	Create Playwright Test Fixtures for Neo.mjs VDOM & State Inspection
state	Closed
labels	developer-experienceaitesting
assignees	tobiu
createdAt	Jan 13, 2026, 8:53 PM
updatedAt	Jan 14, 2026, 12:30 AM
githubUrl	https://github.com/neomjs/neo/issues/8619
author	tobiu
commentsCount	1
parentIssue	8601
subIssues	[]
subIssuesCompleted	0
subIssuesTotal	0
contentTrust
projected
quarantined	0
signals	[]
blockedBy	[]
blocking	[]
closedAt	Jan 14, 2026, 12:30 AM

Create Playwright Test Fixtures for Neo.mjs VDOM & State Inspection

Closed v11.21.0/archive-v11-21-0-chunk-1 developer-experienceaitesting

tobiu commented on Jan 13, 2026, 8:53 PM

E2E testing revealed repetitive boilerplate for:

Accessing Neo.worker.App state from the main thread test context.
Inspecting VDOM/DOM structure for Fragments.
Waiting for DeltaUpdates events.

Goal: Create custom Playwright fixtures/helpers (e.g., expect(neo.getComponent('id')).toHaveVdom(...)) to simplify component testing and make tests more readable and robust.

tobiu Jan 14, 2026, 12:30 AM

Input from Gemini 3 Pro:

✦ Created test/playwright/fixtures.mjs providing a neo fixture that:

Automatically injects RmaHelpers (resolving race conditions).

Provides waitForReady, getConfig, getVdom, and getFragmentAnchors helpers.

Updated RmaHelpers.mjs to ensure helpers are available immediately even if the page is already loaded.

Added Fixtures.spec.mjs to verify the new infrastructure.

tobiu cross-referenced by #8623 on Jan 14, 2026, 12:34 AM

tobiu cross-referenced by #8624 on Jan 14, 2026, 12:41 AM