chore: introduce Turborepo build caching

[KubrickCode]

full builds on every local and CI run wasted significant time. enabled task-level caching with turbo@2.6.1 and pnpm workspace setup

• pnpm-workspace.yaml: define extension, view packages
• turbo.json: configure build, test, lint pipelines
• add turbo cache settings to GitHub Actions
• add turbo-related files to .vscodeignore exclusions

subsequent builds with cache hit reduced from 9s to 60ms

fix #199

[gemini-code-assist]

Summary of Changes

Hello @KubrickCode, 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 the project's build and development efficiency by integrating Turborepo for task-level caching. The changes involve setting up pnpm workspaces, configuring Turborepo's task pipelines, and updating existing scripts to utilize this new caching mechanism. The primary goal is to drastically reduce build, test, and lint times, both locally and in CI environments, by avoiding redundant work and leveraging cached results.

Highlights

• Turborepo Integration: Introduced Turborepo (version 2.6.1) to enable task-level caching for build, test, and lint operations, significantly improving execution times.
• Pnpm Workspace Setup: Configured pnpm workspaces by adding a pnpm-workspace.yaml file, defining src/extension and src/view as separate packages, which is essential for Turborepo's monorepo management.
• Script Optimization: Modified the root package.json scripts (build, lint, test, test:ci, test:coverage) to leverage turbo run commands, allowing for efficient caching and parallel execution.
• Caching Configuration: Added a turbo.json file to define task pipelines, specifying inputs and outputs for various tasks to ensure effective caching, with reported build times reduced from 9 seconds to 60 milliseconds on cache hits.
• Development Environment Updates: Updated .gitignore and .vscodeignore to properly exclude Turborepo-related directories and files, along with adding Playwright test artifacts to .vscodeignore.

Ignored Files

• Ignored by pattern: .github/workflows/** (2)
  • .github/workflows/lint.yml
  • .github/workflows/test.yml

Using Gemini Code Assist

The full guide for Gemini Code Assist can be found on our documentation page, here are some quick tips.

Invoking Gemini

You can request assistance from Gemini at any point by creating a comment using either /gemini <command> or @gemini-code-assist <command>. Below is a summary of the supported commands on the current page.

Feature	Command	Description
Code Review	/gemini review	Performs a code review for the current pull request in its current state.
Pull Request Summary	/gemini summary	Provides a summary of the current pull request in its current state.
Comment	@gemini-code-assist	Responds in comments when explicitly tagged, both in pull request comments and review comments.
Help	/gemini help	Displays a list of available commands.

Customization

To customize Gemini Code Assist for GitHub experience, repository maintainers can create a configuration file and/or provide a custom code review style guide (such as PEP-8 for Python) by creating and adding files to a .gemini/ folder in the base of the repository. Detailed instructions can be found here.

Limitations & Feedback

Gemini Code Assist may make mistakes. Please leave feedback on any instances where its feedback is incorrect or counter productive. You can react with 👍 and 👎 on @gemini-code-assist comments. If you're interested in giving your feedback about your experience with Gemini Code Assist for Github and other Google products, sign up here.

You can also get AI-powered code generation, chat, as well as code reviews directly in the IDE at no cost with the Gemini Code Assist IDE Extension.

Footnotes

1. Review the Privacy Notices, Generative AI Prohibited Use Policy, Terms of Service, and learn how to configure Gemini Code Assist in GitHub here. Gemini can make mistakes, so double check it and use code with caution. ↩

[KubrickCode]

/gemini review

[gemini-code-assist]

Code Review

This pull request introduces Turborepo to enable build caching, which is a great step for improving local and CI performance. The changes correctly set up the pnpm workspace, add Turborepo configuration, and update .gitignore and .vscodeignore files. My review focuses on ensuring the new Turborepo setup is correctly configured and fully leveraged. I've identified a critical issue with the lint script that would cause it to fail, and a high-severity issue where the build script doesn't cache the entire build process, missing a key optimization opportunity. I've also included a suggestion to make the turbo.json configuration more robust and maintainable.

[KubrickCode]

/gemini review

[gemini-code-assist]

Code Review

This pull request introduces Turborepo for build caching, which is a great step towards improving build performance. The overall setup is solid. I've provided a few suggestions to enhance the maintainability and robustness of the configuration files. Specifically, I've recommended refactoring some npm scripts in src/extension/package.json to avoid brittle cd commands and suggested making the turbo.json configuration more concise by removing duplication, in line with the repository's style guide.