Review source code changes using GitHub Copilot Chat.
To start, open Copilot Chat and send one of the following messages:
@lgtm /branch to review changes between two branches or tags
@lgtm /commit to review changes in a commit
You'll receive review comments grouped by file after selecting the desired revisions in the quick select.
Features
Uses the GPT-4o version of Copilot Chat, so only a GitHub Copilot subscription is required. Source code data is sent only to Copilot, which you presumably trust already.
Review content remains in chat history, so you can ask follow-up questions to Copilot (without @lgtm).
Limitations
LGTM may lack some information on how your changes work together. At the moment, most comments will point out local bugs or typos rather than architecture-level comments looking at how multiple files work together.
Since this project is still work in progress, quality of comments may be mixed. This should improve in future versions.
For now, only Copilot's language model can be used via the vscode.lm API.
For larger change sets (e.g. >100 files) you may encounter rate-limiting errors from Copilot. Please wait for the indicated time before retrying.
Data Usage
Source code checked into Git and selected for review and commit messages will be sent to GitHub Copilot.
Avoid using it on repositories where you would not use Copilot.
