LeetCode Master

LeetCode Master is a VS Code extension for solving LeetCode problems and keeping a structured review plan inside the editor.

It keeps the core LeetCode workflow from the original open-source extension and adds a review assistant: accepted submissions can be added to a spaced-repetition review queue, rated with confidence, scheduled for future review, and visualized with activity statistics.

Features

• Browse, preview, solve, test, and submit LeetCode problems from VS Code.
• Switch between leetcode.com and leetcode.cn endpoints.
• Prompt after an accepted submission to add the problem to your review list.
• Rate review confidence as Again, Hard, Good, or Easy.
• Schedule the next review with an FSRS-style memory model. Repeated Easy ratings increase stability and push simple problems farther into the future, while Again shortens the interval.
• Open LeetCode Master: Show Review List to review scheduled problems, jump to the problem preview, and update the rating.
• Open LeetCode Master: Show Review Stats to inspect review insights, a 30-day heatmap, confidence distribution, and daily completion trend.
• Configure Review List sorting and daily review target from VS Code Settings.

Requirements

• VS Code 1.57.0 or newer.
• Node.js available on PATH, or configured with leetcodeMaster.nodePath.
• A LeetCode account for the selected endpoint.

Usage

1. Open the LeetCode Master activity bar view.
2. Run LeetCode Master: Sign In and choose the endpoint you use.
3. Open or create a solution with Show Problem or the Code Now button in a problem preview.
4. Submit the solution with Submit.
5. When the result is accepted, choose whether to add it to the review list and select a confidence rating.
6. Use Show Review List for scheduled review sessions.
7. Use Show Review Stats to check action-oriented insights, review activity, and confidence distribution.

Review Settings

Search for leetcodeMaster review in VS Code Settings. LeetCode Master uses the leetcodeMaster.* settings namespace so it can coexist with the original LeetCode extension.

Review Sync

LeetCode Master can synchronize review data through VS Code Settings Sync, a local folder, or WebDAV. VS Code Settings Sync is used automatically while no complete external backend is configured.

For localFolder, point leetcodeMaster.review.sync.folder to a directory managed by a third-party sync tool, such as Nutstore, OneDrive, Dropbox, or iCloud, then set leetcodeMaster.review.sync.backend to localFolder.

For webdav, set leetcodeMaster.review.sync.backend to webdav, configure the WebDAV URL, username, and root path, then run LeetCode Master: Set WebDAV Password to store the application password in VS Code SecretStorage. Jianguoyun works with https://dav.jianguoyun.com/dav/, your account, and a third-party application password. If Jianguoyun returns a server error while creating remote folders, create the leetcodeMaster.review.sync.webdav.rootPath folder and its cards and logs subfolders in Jianguoyun first, then retry sync.

Both external sync backends store current FSRS card state in sharded JSON files under cards/, append-only review events under logs/, and a manifest.json. This keeps the daily review queue portable across devices while preserving review history for statistics and insights.

Core Settings

Privacy And Network Access

LeetCode Master communicates with the configured LeetCode endpoint to sign in, list problems, preview descriptions, run tests, and submit solutions.

Review records are stored in VS Code globalState. The review data includes problem ID, title, tags, latest confidence rating, next review date, and review history. LeetCode Master marks only the review records key for VS Code Settings Sync while no complete external sync backend is configured. When localFolder or webdav is fully configured, review sync uses that backend instead.

LeetCode sign-in cookies and user status are not marked for Settings Sync. Sign in separately on each device.

WebDAV passwords are stored in VS Code SecretStorage on each device and are not written to settings.json.

If you do not want anonymous product telemetry from the inherited LeetCode workflow, set leetcodeMaster.allowReportData to false.

See PRIVACY.md for the full privacy notes.

Publishing And Local Build

npm ci
npm run compile
npm run lint
npm run build

npm run build packages a .vsix with @vscode/vsce. To publish to the Marketplace, create a publisher, set publisher in package.json to that publisher ID, then run:

npx @vscode/vsce login <publisher-id>
npx @vscode/vsce publish

Do not commit Personal Access Tokens.

Support

Use the repository issue tracker configured in package.json for bugs and feature requests. Include VS Code version, extension version, operating system, endpoint, and relevant output logs.

Acknowledgements

LeetCode Master is based on the MIT-licensed vscode-leetcode project and the leetcode-cli ecosystem. The original copyright notices are preserved in LICENSE.