What is the 'Neural Link'?

The Neural Link is a bi-directional bridge that connects AI agents (like Gemini or Claude) directly to the Neo.mjs runtime. It allows agents to 'see' the application's Scene Graph, inspect component state, verify event listeners, and even mutate the running application in real-time. This turns the application into a 'glass box' for AI, enabling autonomous debugging and feature development.

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

Traditional frameworks are general-purpose libraries (like a Toyota) that help you organize code, but they compile away into ephemeral DOM nodes. Neo.mjs is a precision-engineered runtime (like an F1 car), similar to Unreal Engine for games. It maintains a persistent 'Scene Graph' of objects in a separate worker thread. These objects retain their identity, state, and relationships, allowing for advanced capabilities like multi-window orchestration, runtime permutation, and deep AI introspection that are impossible with 'melted plastic' DOM-based frameworks.

What is 'Context Engineering'?

Context Engineering is the practice of curating the environment and information flow for AI agents to maximize their autonomy. In Neo.mjs, this is implemented via three Model Context Protocol (MCP) servers: a Knowledge Base for semantic code understanding, a Memory Core for learning from past sessions, and a GitHub Workflow server for project management. This ecosystem allows agents to work as fully integrated members of the development team.

What is 'Object Permanence' in the context of Neo.mjs?

In Neo.mjs, UI components are persistent JavaScript objects living in the App Worker, not just transient rendering results. This 'Object Permanence' means a component (like a Dashboard) maintains its state (scroll position, user input, internal logic) even if it is detached from the DOM or moved to a different browser window. This is the 'Lego Technic' approach versus the 'Duplo' approach of traditional frameworks.

What is an 'Agent Operating System'?

Neo.mjs v11 introduced the concept of an Agent OS, where the platform itself provides the tools and interfaces for AI agents to operate. It combines a standalone, type-safe AI SDK for autonomous 'Code Execution' with the Neural Link for runtime control. This enables agents to monitor, debug, and heal the application autonomously, effectively acting as an operating system for synthetic intelligence.

How does Neo.mjs handle multi-window applications?

Neo.mjs uses shared web workers to run a single application instance across multiple browser windows. All windows share the same application state and data in real-time. Components can even move between windows while retaining their JavaScript instances. This enables desktop-class experiences like multi-window IDEs, browser-based email clients, and multi-screen control rooms.

What makes Neo.mjs different from React, Angular, or Vue?

Neo.mjs is fundamentally different in its architecture: (1) It uses True Multithreading via web workers to prevent UI jank, (2) It is an AI-Native Application Engine with built-in bridges for AI collaboration, and (3) It treats components as persistent objects in a Scene Graph, enabling native multi-window support and runtime permutation.

Frontmatter

id	8113
title	Neo.container.Base: Add optional support to keep items in previous parent on add/insert
state	Closed
labels	enhancementai
assignees	tobiu
createdAt	Dec 15, 2025, 1:04 PM
updatedAt	Dec 15, 2025, 1:06 PM
githubUrl	https://github.com/neomjs/neo/issues/8113
author	tobiu
commentsCount	1
parentIssue	null
subIssues	[]
subIssuesCompleted	0
subIssuesTotal	0
blockedBy	[]
blocking	[]
closedAt	Dec 15, 2025, 1:06 PM

Neo.container.Base: Add optional support to keep items in previous parent on add/insert

Name: Neo.mjs Application Engine
Author: Neo.mjs

Closed v11.17.0 enhancementai

tobiu commented on Dec 15, 2025, 1:04 PM

Add a new optional parameter removeFromPreviousParent (defaulting to true) to add, insert, and createItem methods in Neo.container.Base.

Rationale: This feature enables advanced drag-and-drop scenarios, such as "drag-to-popup", where a component needs to be visually present in a new window (popup) while logically remaining attached to its original parent (drag proxy) to maintain event listeners during the drag operation.

Implementation Details:

Update add, insert, and createItem signatures.
In createItem:
- If removeFromPreviousParent is true (default), execute parent.remove(item, false).
- If removeFromPreviousParent is false, skip removal.
- When moving between windows (parent.windowId !== me.windowId), handle the mounted state:
  - If removeFromPreviousParent is true, set item.mounted = false.
  - If removeFromPreviousParent is false, set item._mounted = false (silent update) to ensure afterSetMounted triggers correctly in the new window without prematurely unmounting in the old one.

tobiu added the enhancement label on Dec 15, 2025, 1:04 PM

tobiu added the ai label on Dec 15, 2025, 1:04 PM

tobiu assigned to @tobiu on Dec 15, 2025, 1:05 PM

tobiu referenced in commit 9bd4d5d - "Neo.container.Base: Add optional support to keep items in previous parent on add/insert #8113" on Dec 15, 2025, 1:06 PM

tobiu Dec 15, 2025, 1:06 PM

Input from Neo Agent:

◆ I have verified the implementation of removeFromPreviousParent in src/container/Base.mjs. The logic correctly handles the optional parent removal and the silent vs. loud mounted state update as specified.

tobiu closed this issue on Dec 15, 2025, 1:06 PM