[] Dependencies: Are there any new dependencies? Have you updated the dependency versions in the documentation?
got instant ERESOLVE could not resolve errors when trying to install the packages of this project, but i only added 1 package:
import { debounce } from 'lodash-es'
Testing: Have you written and run sufficient tests to validate the changes?
[] Code review: Have you performed a self-review of your code, addressing any coding standard issues and ensuring adherence to the project's coding standards?
Prefix: To clearly categorize this pull request, prefix the pull request title using one of the following:
perf: Performance improvement
Changelog Entry
Description
Improved paste and typing performance in the main chat view by debouncing and deferring the draft autosave to sessionStorage.
Prevents main-thread blocking when saving large draft text on every keystroke.
Added
New dependency: lodash-es for the debounce helper.
saveDraft helper in Chat.svelte that debounces input changes and uses requestIdleCallback for non-blocking writes.
Changed
Chat.svelte
Replaced direct, synchronous sessionStorage.setItem(JSON.stringify(input)) on every MessageInput change with saveDraft(input).
Debounce delay set to 300 ms.
Skip saving drafts longer than 5 000 characters.
Reduced synchronous workload on input events to keep the UI responsive.
Deprecated
None.
Removed
Direct calls to sessionStorage.setItem(...) in the onChange handler of <MessageInput>.
Fixed
Eliminates massive lag when pasting or typing very large text into the chat input.
Security
None.
Breaking Changes
None.
Additional Information
This change does not alter any user-facing functionality; it only optimizes internal autosave behavior.
Related issue: N/A
Screenshots or Videos
N/A
Contributor License Agreement
By submitting this pull request, I confirm that I have read and fully agree to the Contributor License Agreement (CLA), and I am providing my contributions under its terms.
🔄 This issue represents a GitHub Pull Request. It cannot be merged through Gitea due to API limitations.
## 📋 Pull Request Information
**Original PR:** https://github.com/open-webui/open-webui/pull/15906
**Author:** [@jvz-devx](https://github.com/jvz-devx)
**Created:** 7/21/2025
**Status:** ❌ Closed
**Base:** `dev` ← **Head:** `main`
---
### 📝 Commits (3)
- [`5fbfe2b`](https://github.com/open-webui/open-webui/commit/5fbfe2bdcadf5f157926f6551891e4dc0802b9f3) Merge pull request #15879 from open-webui/dev
- [`8da07f6`](https://github.com/open-webui/open-webui/commit/8da07f673e3b47ea50503f8790de30568be8b6cb) Debounce and defer draft autosave in Chat.svelte
- [`93bfc6a`](https://github.com/open-webui/open-webui/commit/93bfc6ab11b29bbbd0c64a86237592df2701ec76) Refactor draft autosave logic in Chat.svelte to use a constant for maximum input length
### 📊 Changes
**1 file changed** (+15 additions, -4 deletions)
<details>
<summary>View changed files</summary>
📝 `src/lib/components/chat/Chat.svelte` (+15 -4)
</details>
### 📄 Description
# Pull Request Checklis# Pull Request Checklist
### Note to first-time contributors: Please open a discussion post in [[Discussions](https://github.com/open-webui/open-webui/discussions)](https://github.com/open-webui/open-webui/discussions) and describe your changes before submitting a pull request.
**Before submitting, make sure you've checked the following:**
* [x] **Target branch:** Please verify that the pull request targets the `dev` branch.
* [x] **Description:** Provide a concise description of the changes made in this pull request.
* [x] **Changelog:** Ensure a changelog entry following the format of [[Keep a Changelog](https://keepachangelog.com/)](https://keepachangelog.com/) is added at the bottom of the PR description.
* [ ] **Documentation:** Have you updated relevant documentation [[Open WebUI Docs](https://github.com/open-webui/docs)](https://github.com/open-webui/docs), or other documentation sources?
* [] **Dependencies:** Are there any new dependencies? Have you updated the dependency versions in the documentation?
got instant ERESOLVE could not resolve errors when trying to install the packages of this project, but i only added 1 package:
import { debounce } from 'lodash-es'
* [ ] **Testing:** Have you written and run sufficient tests to validate the changes?
* [] **Code review:** Have you performed a self-review of your code, addressing any coding standard issues and ensuring adherence to the project's coding standards?
* [x] **Prefix:** To clearly categorize this pull request, prefix the pull request title using one of the following:
* **perf**: Performance improvement
# Changelog Entry
### Description
* Improved paste and typing performance in the main chat view by debouncing and deferring the draft autosave to `sessionStorage`.
* Prevents main-thread blocking when saving large draft text on every keystroke.
### Added
* New dependency: `lodash-es` for the `debounce` helper.
* `saveDraft` helper in **Chat.svelte** that debounces input changes and uses `requestIdleCallback` for non-blocking writes.
### Changed
* **Chat.svelte**
* Replaced direct, synchronous `sessionStorage.setItem(JSON.stringify(input))` on every `MessageInput` change with `saveDraft(input)`.
* Debounce delay set to 300 ms.
* Skip saving drafts longer than 5 000 characters.
* Reduced synchronous workload on input events to keep the UI responsive.
### Deprecated
* None.
### Removed
* Direct calls to `sessionStorage.setItem(...)` in the `onChange` handler of `<MessageInput>`.
### Fixed
* Eliminates massive lag when pasting or typing very large text into the chat input.
### Security
* None.
### Breaking Changes
* None.
---
### Additional Information
* This change does not alter any user-facing functionality; it only optimizes internal autosave behavior.
* Related issue: N/A
### Screenshots or Videos
* N/A
### Contributor License Agreement
By submitting this pull request, I confirm that I have read and fully agree to the [Contributor License Agreement (CLA)](/CONTRIBUTOR_LICENSE_AGREEMENT), and I am providing my contributions under its terms.
---
<sub>🔄 This issue represents a GitHub Pull Request. It cannot be merged through Gitea due to API limitations.</sub>
Blocking a user prevents them from interacting with repositories, such as opening or commenting on pull requests or issues. Learn more about blocking a user.
📋 Pull Request Information
Original PR: https://github.com/open-webui/open-webui/pull/15906
Author: @jvz-devx
Created: 7/21/2025
Status: ❌ Closed
Base:
dev← Head:main📝 Commits (3)
5fbfe2bMerge pull request #15879 from open-webui/dev8da07f6Debounce and defer draft autosave in Chat.svelte93bfc6aRefactor draft autosave logic in Chat.svelte to use a constant for maximum input length📊 Changes
1 file changed (+15 additions, -4 deletions)
View changed files
📝
src/lib/components/chat/Chat.svelte(+15 -4)📄 Description
Pull Request Checklis# Pull Request Checklist
Note to first-time contributors: Please open a discussion post in [Discussions](https://github.com/open-webui/open-webui/discussions) and describe your changes before submitting a pull request.
Before submitting, make sure you've checked the following:
devbranch.got instant ERESOLVE could not resolve errors when trying to install the packages of this project, but i only added 1 package:
import { debounce } from 'lodash-es'
Testing: Have you written and run sufficient tests to validate the changes?
[] Code review: Have you performed a self-review of your code, addressing any coding standard issues and ensuring adherence to the project's coding standards?
Prefix: To clearly categorize this pull request, prefix the pull request title using one of the following:
Changelog Entry
Description
sessionStorage.Added
lodash-esfor thedebouncehelper.saveDrafthelper in Chat.svelte that debounces input changes and usesrequestIdleCallbackfor non-blocking writes.Changed
Chat.svelte
sessionStorage.setItem(JSON.stringify(input))on everyMessageInputchange withsaveDraft(input).Reduced synchronous workload on input events to keep the UI responsive.
Deprecated
Removed
sessionStorage.setItem(...)in theonChangehandler of<MessageInput>.Fixed
Security
Breaking Changes
Additional Information
Screenshots or Videos
Contributor License Agreement
By submitting this pull request, I confirm that I have read and fully agree to the Contributor License Agreement (CLA), and I am providing my contributions under its terms.
🔄 This issue represents a GitHub Pull Request. It cannot be merged through Gitea due to API limitations.