chore: update flexsearch to v0.8 (breaking change)

[josecelano]

Overview

Update flexsearch from version 0.7.43 to 0.8.105 (or latest stable).

Context

This is a major version update (0.7 → 0.8) with significant breaking changes that require code modifications and thorough testing.

Related Snyk PR: #153

Current Usage

Flexsearch is currently used in the blog search functionality:

• File: src/lib/utils/search.ts
• Component: src/lib/components/singletons/SearchBar.svelte

Current implementation:

import FlexSearch from 'flexsearch';
postsIndex = new FlexSearch.Index({ tokenize: 'forward' });

What's New in v0.8

According to the release notes:

• 🚀 4.5x faster query performance
• 🔌 Persistent indexes support (IndexedDB, Redis, SQLite, PostgreSQL, MongoDB, ClickHouse)
• 🎨 Result highlighting
• 🔍 Enhanced language customization via Encoder class
• 📦 Improved build system with better CJS/ESM support
• 🔧 Improved interoperability and TypeScript definitions
• ⚡ Regex pre-compilation
• 🎯 Intermediate result sets and Resolver

Breaking Changes

• API changes: Import patterns and method signatures may have changed
• Build system: Different module format (CJS vs ESM)
• Type definitions: Updated TypeScript types

Required Work

1. Update Dependency

npm install flexsearch@^0.8.105

2. Update Code

Review and update src/lib/utils/search.ts:

• Check import statement compatibility
• Verify Index constructor and options
• Test add() and search() methods
• Check return types and data structures

3. Testing Checklist

• Search functionality works correctly
• Search results are accurate
• Result highlighting works (if implemented)
• Performance is acceptable
• No TypeScript errors
• Build completes successfully
• Test on different browsers (if client-side indexing is used)

4. Documentation

• Update any relevant comments in the code
• Document any configuration changes

Resources

• Flexsearch v0.8 Release Notes
• Flexsearch GitHub Repository
• Flexsearch Documentation

Priority

Low - Current version (0.7.43) is working fine. This is an enhancement for better performance and features.

Labels

• enhancement
• dependencies
• breaking-change