---
id: 2617
title: 'collection.Base: keyPropertyIndex config'
state: CLOSED
labels:
  - enhancement
assignees:
  - tobiu
createdAt: '2021-07-17T14:16:23Z'
updatedAt: '2021-07-17T14:16:51Z'
githubUrl: 'https://github.com/neomjs/neo/issues/2617'
author: tobiu
commentsCount: 0
parentIssue: null
subIssues: []
subIssuesCompleted: 0
subIssuesTotal: 0
blockedBy: []
blocking: []
closedAt: '2021-07-17T14:16:51Z'
---
# collection.Base: keyPropertyIndex config

Use a negative index for items which get added without having an id (keyProperty).

the index will decrease by 1 for each new item.

## Timeline

- 2021-07-17T14:16:23Z @tobiu added the `enhancement` label
- 2021-07-17T14:16:23Z @tobiu assigned to @tobiu
- 2021-07-17T14:16:40Z @tobiu referenced in commit `d3a3671` - "collection.Base: keyPropertyIndex config #2617"
- 2021-07-17T14:16:51Z @tobiu closed this issue

