# Claude Code v1.0.43

> Claude Code v1.0.43, released 3 Jul 2025 (2025-07-03). 6 entries read out of the shipped bundle. Unofficial, and not affiliated with Anthropic.

Web version: https://changelogs.core-directive.com/v/1.0.43

## Changes

# Claude Code v1.0.43 Changelog

### New Theme Preview Feature

Version 1.0.43 introduces a major enhancement to the theme management system with the ability to preview themes before applying them permanently.

Key Changes:

**Enhanced Theme Context**

- The theme context has been completely redesigned with a richer API
- New context structure includes:

` { theme: null, // Current saved theme setTheme: (A) => A, // Set and save theme setPreviewTheme: (A) => A, // Preview theme without saving savePreview: () => {}, // Save the previewed theme currentTheme: null, // Active theme (preview or saved) }` **New Theme Provider Component**

- Added `jT1` component that provides theme state management
- Tracks both saved themes and preview themes separately
- Allows users to test themes before committing to them

**Updated Theme Hook**

- The `hB` hook now returns `currentTheme` instead of just the saved theme
- This means components will automatically use preview themes when active

### User-Facing Benefits:

- **Try Before You Apply**: You can now preview how a theme looks before permanently switching to it
- **Easy Rollback**: If you don't like a preview theme, simply don't save it
- **Seamless Testing**: The UI updates immediately when previewing themes, giving instant feedback

### Usage Example:

When using Claude Code, you might interact with themes like this:

- Preview a theme temporarily to see how it looks
- If you like it, save the preview to make it permanent
- If not, the preview is discarded and your original theme remains

### Stream Handling Updates

- Migrated from generic stream imports to more specific `PassThrough` imports
- Added `PassThrough` imports from both `node:stream` and `stream` modules
- This likely improves performance and reduces bundle size

### Process Module Import

- Added specific import for `cwd` (current working directory) from `node:process`
- Removed generic process import, using only what's needed

These changes represent a focus on improving the user experience around theme customization while also making technical optimizations to the codebase.