fix(vscode): resolve unsafe type assertion lint errors

[ehedlund]

Summary

Resolves unsafe type assertion lint errors in the VS Code companion package.

Details

• Safe Tab Input Handling: In diff-manager.ts, replaced an unsafe type assertion on tab.input with a robust instanceof vscode.TabInputTextDiff check.
• Session ID Helper: Added getSessionId in ide-server.ts to safely extract the session ID from request headers, correctly handling both string and array-of-strings cases.
• Optional Chaining: Replaced unsafe casting of this.server with optional chaining when accessing address().
• Linter Cleanup: Removed now-unused eslint-disable-next-line @typescript-eslint/no-unsafe-type-assertion directives.

Related Issues

Resolves lint errors in packages/vscode-ide-companion.

How to Validate

Run the following commands in the package directory:

npm run lint -w packages/vscode-ide-companion
npm run check-types -w packages/vscode-ide-companion

Pre-Merge Checklist

• Updated relevant documentation and README (if needed)
• Added/updated tests (if needed)
• Noted breaking changes (if any)
• Validated on required platforms/methods:
  • MacOS
    • npm run

[gemini-code-assist]

Summary of Changes

Hello @ehedlund, 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 focuses on enhancing type safety within the VS Code companion package by resolving several unsafe type assertion lint errors. The changes introduce more robust type checking mechanisms and helper functions to prevent potential runtime issues and improve code maintainability, aligning with stricter TypeScript practices.

Highlights

• Safe Tab Input Handling: Replaced an unsafe type assertion on tab.input with a robust instanceof vscode.TabInputTextDiff check in diff-manager.ts.
• Session ID Helper: Added getSessionId in ide-server.ts to safely extract the session ID from request headers, handling both string and array-of-strings cases.
• Optional Chaining: Replaced unsafe casting of this.server with optional chaining when accessing address() in ide-server.ts.
• Linter Cleanup: Removed now-unused eslint-disable-next-line @typescript-eslint/no-unsafe-type-assertion directives across the codebase.

Changelog

• packages/vscode-ide-companion/src/diff-manager.ts
  • Replaced an unsafe type assertion on tab.input with an instanceof vscode.TabInputTextDiff check.
  • Removed an eslint-disable-next-line directive related to unsafe type assertions.
• packages/vscode-ide-companion/src/ide-server.ts
  • Added a new helper function getSessionId to safely extract session IDs from request headers.
  • Updated the app.post('/mcp') handler to utilize the new getSessionId helper for safer session ID extraction.
  • Updated the handleSessionRequest function to utilize the new getSessionId helper for safer session ID extraction.
  • Replaced an unsafe type assertion on this.server with optional chaining (this.server?.address()) when retrieving the server address.
  • Removed multiple eslint-disable-next-line directives related to unsafe type assertions.

Activity

• Updated relevant documentation and README (if needed) has been checked off.
• Added/updated tests (if needed) has been checked off.
• Validated on MacOS using npm run has been checked off.

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[gemini-code-assist]

Code Review

The pull request successfully addresses unsafe type assertion lint errors in the VS Code companion package. The changes improve type safety by using instanceof checks for VS Code tabs and implementing a helper function to safely extract session IDs from request headers, which now correctly handles both string and array-of-strings cases. The replacement of unsafe casts with optional chaining and robust type checks enhances the overall maintainability and reliability of the codebase. No high or critical issues were identified during the review.

[gundermanc]

LGTM! Love to see this sort of cleanup.