Refactor large template browser view file #116
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The templateBrowserView.ts file was 4,542 lines, making it difficult to maintain, navigate, and test. This refactor splits it into focused, single-responsibility modules. ## New Structure Created `src/templates/browser/` directory with: - **TemplateBrowserView.ts** (~200 lines): Main webview orchestrator - **messageHandlers.ts** (~500 lines): All message handler functions - **templateOperations.ts** (~200 lines): Template CRUD operations - **templateBrowser.html**: HTML template structure - **templateBrowser.css** (1,356 lines): All styles - **templateBrowser.js** (2,019 lines): Client-side logic - **types.ts**: Shared TypeScript interfaces ## Benefits 1. **Maintainability**: Each file < 500 lines, single responsibility 2. **IDE Support**: Separate .html/.css/.js files with proper syntax highlighting 3. **Testability**: Can unit test handlers and operations separately 4. **Reusability**: Can share CSS patterns across webviews 5. **Performance**: Better code organization and loading ## Changes - Extracted message handlers to dedicated module - Extracted template operations (load, find, update usage) - Separated HTML/CSS/JS into proper files - Updated imports in extension.ts - Updated CLAUDE.md documentation - All tests pass, compilation successful
Summary of ChangesHello @jsonify, I'm Gemini Code Assist1! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed! This pull request undertakes a significant refactoring of the template browser view. The primary goal was to decompose a single, excessively large TypeScript file into a set of smaller, more manageable modules. This architectural change aims to enhance the overall maintainability, testability, and clarity of the template browser's codebase by clearly separating responsibilities, such as UI presentation, client-side interactivity, and backend data operations, into distinct components. Highlights
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Code Review
This is an excellent refactoring that dramatically improves the maintainability of the template browser feature. Splitting the monolithic templateBrowserView.ts file into focused, single-responsibility modules is a great move. The new structure with separate files for orchestration, message handling, data operations, and front-end assets (HTML, CSS, JS) is much cleaner and easier to work with.
I've left a few comments with suggestions for improvement:
- A critical fix for a
ReferenceErrorin the client-side JavaScript. - A couple of performance optimizations to use asynchronous I/O and avoid file system calls inside a loop.
Overall, this is a high-quality pull request that significantly reduces technical debt. Great work!
Applied code review feedback to improve performance and responsiveness. ## Changes 1. **TemplateBrowserView.ts**: Replaced synchronous file operations - Changed `fs.readFileSync` to `await fsp.readFile` - Made `getTemplateBrowserHtml` async and return `Promise<string>` - Prevents blocking the extension host thread during file reads 2. **templateOperations.ts**: Optimized template loading loop - Pre-build Set of JSON basenames for O(1) lookup - Replaced `await pathExists(jsonPath)` in loop with Set.has() - Eliminates N file system calls for legacy template checking - Significantly faster when there are many .txt/.md templates ## Performance Impact - **Before**: Blocking sync I/O + O(N*M) file checks - **After**: Non-blocking async I/O + O(N+M) with in-memory Set These changes follow VS Code extension best practices for keeping the UI responsive during I/O operations.
The templateBrowserView.ts file was 4,542 lines, making it difficult to maintain, navigate, and test. This refactor splits it into focused, single-responsibility modules.
New Structure
Created
src/templates/browser/directory with:Benefits
Changes