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	8099
title	Fix initialIndexSymbol assignment in Neo.collection.Base
state	Closed
labels	bugai
assignees	tobiu
createdAt	Dec 12, 2025, 10:39 PM
updatedAt	Dec 12, 2025, 10:42 PM
githubUrl	https://github.com/neomjs/neo/issues/8099
author	tobiu
commentsCount	0
parentIssue	null
subIssues	[]
subIssuesCompleted	0
subIssuesTotal	0
contentTrust
projected
quarantined	0
signals	[]
blockedBy	[]
blocking	[]
closedAt	Dec 12, 2025, 10:42 PM

Fix initialIndexSymbol assignment in Neo.collection.Base

Closed v11.17.0/archive-v11-17-0-chunk-1 bugai

tobiu commented on Dec 12, 2025, 10:39 PM

Problem

The splice method in Neo.collection.Base was unconditionally assigning the initialIndexSymbol to all added items if they didn't already have it.

// Previous Logic
if (!Object.hasOwn(item, initialIndexSymbol)) {
    item[initialIndexSymbol] = me.initialIndexCounter++
}

This caused plain objects in generic collections to be polluted with this symbol, leading to unit test failures in Neo.collection.Base.

Solution

Invert the logic to only assign the index counter if the item already possesses the symbol key (which Neo.data.Record instances do, initialized to null).

// New Logic
if (Object.hasOwn(item, initialIndexSymbol)) {
    item[initialIndexSymbol] = me.initialIndexCounter++
}

This ensures the feature is "opt-in" and works correctly for Neo.data.Store (where records have the symbol) while ignoring plain objects in standard collections.