# Claude Code v0.2.89

> Claude Code v0.2.89, released 28 Apr 2025 (2025-04-28). 12 entries read out of the shipped bundle. Unofficial, and not affiliated with Anthropic.

Web version: https://changelogs.core-directive.com/v/0.2.89

## Overview

This update significantly restructures the internal codebase, removing 1,130 declarations and adding 176 new ones, resulting in a more streamlined implementation with 84.3% structural similarity to v0.2.86.

### AWS Credential Chain Management

- **New `createCredentialChain()` function**: Provides enhanced credential chain management for AWS SDK operations
- **`expireAfter()` method**: Allows setting custom expiration times for credentials
- Minimum expiration duration enforced at 5 minutes (300,000ms)
- Example usage:

`    const credChain = createCredentialChain(provider1, provider2)
      .expireAfter(600000); // Set 10-minute expiration`

### Property Provider Chain

- **New `propertyProviderChain()` function**: Implements a chain-of-responsibility pattern for property providers
- Automatically tries next provider in chain if current provider fails with `tryNextLink` flag
- Throws the last error if all providers fail

### Stream API Support

- Enhanced stream transformation capabilities with better error handling
- Added validation for `TransformStream` API availability
- Improved Blob-to-stream conversion with React Native compatibility warnings

### Error Handling

- Better error messages for unsupported APIs
- Specific guidance for React Native users regarding fetch streaming limitations

### AWS Configuration Components

The following AWS SDK configuration modules were removed in favor of the new credential chain system:

- Boolean selector utilities for environment/config parsing
- Dual-stack endpoint configuration options
- FIPS endpoint configuration options
- Various AWS region and endpoint resolution utilities
- Retry strategy implementations (StandardRetryStrategy, AdaptiveRetryStrategy)
- Multiple AWS signing and authentication modules

### HTTP Protocol Components

- HTTP request/response classes and utilities
- Content length middleware
- Host header middleware
- Logger middleware
- Recursion detection middleware

### UUID Generation

- Removed UUID v1, v3, v4, v5 generation utilities
- Removed UUID parsing and validation functions

### Code Organization

- Consolidated credential provider functionality into new chain-based architecture
- Simplified AWS SDK integration with fewer, more focused modules
- Removed redundant tslib helper functions across multiple modules

### Performance

- Reduced bundle size through removal of unused AWS SDK components
- More efficient credential caching and validation

## Migration Notes

- If you were using removed AWS SDK configuration features directly, you'll need to adapt to the new credential chain pattern
- UUID functionality that was removed can be replaced with external UUID libraries if needed
- The new credential chain system provides a more unified approach to managing AWS credentials across different sources

## Bug Fixes

- Improved handling of credential expiration edge cases
- Better error propagation in provider chains
- Fixed potential memory leaks in credential caching