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GitHub PR Branch Warning

ExtensionDeveloper Tools2 users
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Item media 1 (screenshot) for GitHub PR Branch Warning
Item media 1 (screenshot) for GitHub PR Branch Warning
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Overview

Warns when a PR targets an unexpected branch, when a branch hasn't been merged, or when merging outside allowed hours.

GitHub PR Branch Warning displays three types of safety warnings on GitHub pull request pages to prevent common merge mistakes. 【Features】 🔴 Wrong Base Branch Warning Shows a red sticky banner when the PR's target branch is not in your allowed list. Prevents accidental merges into the wrong branch (e.g. merging into main when you meant develop). 🟠 Merge-Forget Alert (new in v1.2.0) Automatically checks whether the head branch has been merged into your required branches (e.g. staging, qa) before the final merge. If any are missing, an orange banner appears immediately. Uses your existing browser login session — no personal access token required, and private repositories are fully supported. 🟣 Outside Merge Window Alert (new in v1.2.0) Define allowed merge windows by day of week, time range, and timezone. A purple banner appears when you open a PR outside all configured windows, helping prevent off-hours or holiday merges. 【Other Features】 ・Multiple warnings stack cleanly — all active warnings are shown simultaneously ・EN / JA language toggle available in the popup ・Settings sync across devices via chrome.storage.sync ・Supports GitHub SPA navigation (Turbo / Turbolinks) ・No API token or external service required 【Who is this for?】 ・Teams who want to prevent accidental merges into the wrong branch ・Developers managing multi-environment release flows (staging / qa / production) ・Projects that enforce merge blackout periods during nights or holidays ・Anyone who wants an extra layer of safety in their GitHub workflow --- (日本語の説明は後半にあります) --- GitHub PR Branch Warning は、GitHubのプルリクエストページに3種類の安全警告を表示するChrome拡張機能です。 【主な機能】 🔴 意図しないマージ先ブランチ警告 PRのターゲットブランチが許可リストにない場合に赤いスティッキーバナーを表示。developに向けるつもりがmainに向いていた、といったミスを即座に検知します。 🟠 マージし忘れアラート(v1.2.0) 本番マージ前に staging や qa など指定ブランチへのマージが完了しているか自動チェック。未マージなら即座にオレンジのバナーで警告します。ブラウザのログインセッションを利用するためトークン不要、プライベートリポジトリにも対応。 🟣 マージ可能時間外アラート(v1.2.0) マージを許可する曜日・時間帯・タイムゾーンを自由に設定できます。設定した時間帯外にPRを開くと紫のバナーが表示され、深夜・休日の誤マージを防止します。 【その他の特徴】 ・複数の警告が同時に発生した場合も重ねて表示 ・英語・日本語のUIを切り替え可能 ・設定はデバイス間で自動同期(chrome.storage.sync) ・GitHubのSPA遷移(Turbo / Turbolinks)に対応 ・APIトークンや外部サービス不要 【こんな方におすすめ】 ・誤ったブランチへのPRマージを防ぎたいチーム ・複数環境(staging/qa/本番)へのリリースフローを守りたい開発者 ・深夜・休日マージを禁止したいプロジェクト ・GitHubワークフローに安全のひと手間を加えたいエンジニア

Details

  • Version
    1.2.1
  • Updated
    April 16, 2026
  • Offered by
    ナイトランプ合同会社
  • Size
    20.16KiB
  • Languages
    English
  • Developer
    ナイトランプ合同会社
    弥生町68−8 201 板橋区, 東京都 173-0021 JP
    Email
    info@nightlamp.co.jp
    Phone
    +81 70-3533-0539
  • Trader
    This developer has identified itself as a trader per the definition from the European Union and committed to only offer products or services that comply with EU laws.
  • D-U-N-S
    680373269

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  • Not being sold to third parties, outside of the approved use cases
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