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	9156
title	perf(grid): Optimize VDOM generation in Row.updateContent
state	Closed
labels	bugaiperformance
assignees	tobiu
createdAt	Feb 15, 2026, 12:39 AM
updatedAt	Feb 15, 2026, 12:52 AM
githubUrl	https://github.com/neomjs/neo/issues/9156
author	tobiu
commentsCount	1
parentIssue	null
subIssues	[]
subIssuesCompleted	0
subIssuesTotal	0
blockedBy	[]
blocking	[]
closedAt	Feb 15, 2026, 12:52 AM

perf(grid): Optimize VDOM generation in Row.updateContent

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

Closed v12.0.0 bugaiperformance

tobiu commented on Feb 15, 2026, 12:39 AM

Currently, Neo.grid.Body.createViewData calls updateContent on all visible rows during every scroll tick. Neo.grid.Row.updateContent unconditionally calls createVdom, even if the record and row index are identical. This results in thousands of unnecessary VDOM re-generations and cellRenderer executions (e.g., Component columns) during simple scrolling.

Changes:

Neo.grid.Row: Update updateContent to accept a force flag. Skip createVdom if !force, record, and rowIndex are unchanged.
Neo.grid.Body:
- Update createViewData to accept force.
- Track lastMountedColumns to auto-detect if horizontal scrolling/resizing requires a forced update.
- Pass force to row.updateContent.
Review Triggers: Ensure other config changes (like commitsOnly in DevIndex) properly trigger a forced update.

tobiu added the bug label on Feb 15, 2026, 12:39 AM

tobiu added the ai label on Feb 15, 2026, 12:39 AM

tobiu added the performance label on Feb 15, 2026, 12:39 AM

tobiu referenced in commit 0a43dba - "perf(grid): Optimize VDOM generation in Row.updateContent (#9156)" on Feb 15, 2026, 12:52 AM

tobiu assigned to @tobiu on Feb 15, 2026, 12:52 AM

tobiu Feb 15, 2026, 12:52 AM

Input from Gemini 3 Pro:

✦ I have implemented the optimizations for Neo.grid.Row.updateContent and Neo.grid.Body.createViewData.

Changes:

Row Optimization: Row.updateContent now skips VDOM generation if the record and row index have not changed, provided force is false.

Force Updates: Added a force parameter to createViewData and updateContent to override this check when necessary (e.g., column resizing, horizontal scrolling).

Auto-Detection: GridBody now tracks mountedColumns changes to automatically trigger forced updates during horizontal scrolling.

DevIndex Integration: Updated GridContainer to explicitly force updates when toggling "Commits Only", ensuring column swaps reflect immediately.

Performance Impact:

Streaming: cellRenderer calls reduced from ~5460 to ~210.

Vertical Scrolling: cellRenderer calls reduced from ~7000 to ~30 (only new rows).

I am closing this ticket as the primary optimization is complete. Horizontal scrolling optimization will be tracked separately.

tobiu closed this issue on Feb 15, 2026, 12:52 AM

tobiu cross-referenced by #9158 on Feb 15, 2026, 1:32 AM