Initial commit

.codesandbox/tasks.json

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+{
+  // These tasks will run in order when initializing your CodeSandbox project.
+  "setupTasks": [
+    {
+      "name": "Install Dependencies",
+      "command": "npm install"
+    }
+  ],
+
+  // These tasks can be run from CodeSandbox. Running one will open a log in the app.
+  "tasks": {
+    "server": {
+      "name": "server",
+      "command": "npm start"
+    },
+    "lint": {
+      "name": "lint",
+      "command": "npm run lint"
+    },
+    "n": {
+      "name": "n",
+      "command": "npm start",
+      "runAtStart": true,
+      "preview": {
+        "port": 3000
+      }
+    }
+  }
+}

.env.sample

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+APP_ID="11"
+GITHUB_APP_PRIVATE_KEY_BASE64="base64 encoded private key"
+PRIVATE_KEY_PATH="very/secure/location/gh_app_key.pem"
+WEBHOOK_SECRET="secret"

.github/workflows/linting.yml

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+name: Linting
+
+on:
+  push:
+    branches: [ main ]
+  pull_request:
+    branches: [ main ]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v3
+    - uses: actions/setup-node@v3
+      with:
+        node-version: 18
+        cache: 'npm'
+    - run: npm install standard
+    - run: npm run lint

.gitignore

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+# Logs
+logs
+.env
+*.log
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+pnpm-debug.log*
+lerna-debug.log*
+
+node_modules
+dist
+dist-ssr
+*.local
+
+# Editor directories and files
+.vscode/*
+!.vscode/extensions.json
+.idea
+.DS_Store
+*.suo
+*.ntvs*
+*.njsproj
+*.sln
+*.sw?

CODEOWNERS

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+* @github/ecosystem-apps-reviewers

CODE_OF_CONDUCT.md

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+# Contributor Covenant Code of Conduct
+
+## Our Pledge
+
+In the interest of fostering an open and welcoming environment, we as
+contributors and maintainers pledge to making participation in our project and
+our community a harassment-free experience for everyone, regardless of age, body
+size, disability, ethnicity, gender identity and expression, level of experience,
+nationality, personal appearance, race, religion, or sexual identity and
+orientation.
+
+## Our Standards
+
+Examples of behavior that contributes to creating a positive environment
+include:
+
+* Using welcoming and inclusive language
+* Being respectful of differing viewpoints and experiences
+* Gracefully accepting constructive criticism
+* Focusing on what is best for the community
+* Showing empathy towards other community members
+
+Examples of unacceptable behavior by participants include:
+
+* The use of sexualized language or imagery and unwelcome sexual attention or
+advances
+* Trolling, insulting/derogatory comments, and personal or political attacks
+* Public or private harassment
+* Publishing others' private information, such as a physical or electronic
+  address, without explicit permission
+* Other conduct which could reasonably be considered inappropriate in a
+  professional setting
+
+## Our Responsibilities
+
+Project maintainers are responsible for clarifying the standards of acceptable
+behavior and are expected to take appropriate and fair corrective action in
+response to any instances of unacceptable behavior.
+
+Project maintainers have the right and responsibility to remove, edit, or
+reject comments, commits, code, wiki edits, issues, and other contributions
+that are not aligned to this Code of Conduct, or to ban temporarily or
+permanently any contributor for other behaviors that they deem inappropriate,
+threatening, offensive, or harmful.
+
+## Scope
+
+This Code of Conduct applies both within project spaces and in public spaces
+when an individual is representing the project or its community. Examples of
+representing a project or community include using an official project e-mail
+address, posting via an official social media account, or acting as an appointed
+representative at an online or offline event. Representation of a project may be
+further defined and clarified by project maintainers.
+
+## Enforcement
+
+Instances of abusive, harassing, or otherwise unacceptable behavior may be
+reported by contacting the project team at opensource@github.com. All
+complaints will be reviewed and investigated and will result in a response that
+is deemed necessary and appropriate to the circumstances. The project team is
+obligated to maintain confidentiality with regard to the reporter of an incident.
+Further details of specific enforcement policies may be posted separately.
+
+Project maintainers who do not follow or enforce the Code of Conduct in good
+faith may face temporary or permanent repercussions as determined by other
+members of the project's leadership.
+
+## Attribution
+
+This Code of Conduct is adapted from the [Contributor Covenant][homepage], version 1.4,
+available at [http://contributor-covenant.org/version/1/4][version]
+
+[homepage]: http://contributor-covenant.org
+[version]: http://contributor-covenant.org/version/1/4/

CONTRIBUTING.md

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+## Contributing
+
+[fork]: https://github.com/github/github-app-js-sample/fork
+[pr]: https://github.com/github/github-app-js-sample/compare
+[style]: https://standardjs.com/rules.html
+[code-of-conduct]: CODE_OF_CONDUCT.md
+
+Hi there! We're thrilled that you'd like to contribute to this project. Your help is essential for keeping it great.
+
+Contributions to this project are [released](https://help.github.com/articles/github-terms-of-service/#6-contributions-under-repository-license) to the public under the [project's open source license](LICENSE.md).
+
+Please note that this project is released with a [Contributor Code of Conduct](CODE_OF_CONDUCT.md). By participating in this project you agree to abide by its terms.
+
+## Submitting a pull request
+
+1. [Fork][fork] and clone the repository
+1. Install the dependencies: `npm install`
+1. Make sure the linter passes on your machine: `npx standard --fix`
+1. Create a new branch: `git checkout -b my-branch-name`
+1. Make your change, and make sure the linter is still happy
+1. Push to your fork and [submit a pull request][pr]
+1. Pat your self on the back and wait for your pull request to be reviewed and merged.
+
+Here are a few things you can do that will increase the likelihood of your pull request being accepted:
+
+- Follow the [style guide][style].
+- Keep your change as focused as possible. If there are multiple changes you would like to make that are not dependent upon each other, consider submitting them as separate pull requests.
+- Write a [good commit message](http://tbaggery.com/2008/04/19/a-note-about-git-commit-messages.html).
+
+## Resources
+
+- [How to Contribute to Open Source](https://opensource.guide/how-to-contribute/)
+- [Using Pull Requests](https://help.github.com/articles/about-pull-requests/)
+- [GitHub Help](https://help.github.com)

LICENSE

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+MIT License
+
+Copyright GitHub
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

README.md

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+# Sample GitHub App
+
+This sample app showcases how webhooks can be used with a GitHub App's installation token to create a bot that responds to issues. Code uses [octokit.js](https://github.com/octokit/octokit.js).
+
+## Requirements
+
+- Node.js 20 or higher
+- A GitHub App subscribed to **Pull Request** events and with the following permissions:
+  - Pull requests: Read & write
+  - Metadata: Read-only
+- (For local development) A tunnel to expose your local server to the internet (e.g. [smee](https://smee.io/), [ngrok](https://ngrok.com/) or [cloudflared](https://developers.cloudflare.com/cloudflare-one/connections/connect-apps/install-and-setup/tunnel-guide/local/))
+- Your GitHub App Webhook must be configured to receive events at a URL that is accessible from the internet.
+
+## Setup
+
+1. Clone this repository.
+2. Create a `.env` file similar to `.env.example` and set actual values. If you are using GitHub Enterprise Server, also include a `ENTERPRISE_HOSTNAME` variable and set the value to the name of your GitHub Enterprise Server instance.
+3. Install dependencies with `npm install`.
+4. Start the server with `npm run server`.
+5. Ensure your server is reachable from the internet.
+    - If you're using `smee`, run `smee -u <smee_url> -t http://localhost:3000/api/webhook`.
+6. Ensure your GitHub App includes at least one repository on its installations.
+
+## Usage
+
+With your server running, you can now create a pull request on any repository that
+your app can access. GitHub will emit a `pull_request.opened` event and will deliver
+the corresponding Webhook [payload](https://docs.github.com/webhooks-and-events/webhooks/webhook-events-and-payloads#pull_request) to your server.
+
+The server in this example listens for `pull_request.opened` events and acts on
+them by creating a comment on the pull request, with the message in `message.md`,
+using the [octokit.js rest methods](https://github.com/octokit/octokit.js#octokitrest-endpoint-methods).
+
+## Security considerations
+
+To keep things simple, this example reads the `GITHUB_APP_PRIVATE_KEY` from the
+environment. A more secure and recommended approach is to use a secrets management system
+like [Vault](https://www.vaultproject.io/use-cases/key-management), or one offered
+by major cloud providers:
+[Azure Key Vault](https://learn.microsoft.com/en-us/azure/key-vault/secrets/quick-create-node?tabs=windows),
+[AWS Secrets Manager](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/clients/client-secrets-manager/),
+[Google Secret Manager](https://cloud.google.com/nodejs/docs/reference/secret-manager/latest),
+etc.

SECURITY.md

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+Thanks for helping make GitHub safe for everyone.
+
+# Security
+
+GitHub takes the security of our software products and services seriously, including all of the open source code repositories managed through our GitHub organizations, such as [GitHub](https://github.com/GitHub).
+
+Even though [open source repositories are outside of the scope of our bug bounty program](https://bounty.github.com/index.html#scope) and therefore not eligible for bounty rewards, we will ensure that your finding gets passed along to the appropriate maintainers for remediation. 
+
+## Reporting Security Issues
+
+If you believe you have found a security vulnerability in any GitHub-owned repository, please report it to us through coordinated disclosure.
+
+**Please do not report security vulnerabilities through public GitHub issues, discussions, or pull requests.**
+
+Instead, please send an email to opensource-security[@]github.com.
+
+Please include as much of the information listed below as you can to help us better understand and resolve the issue:
+
+  * The type of issue (e.g., buffer overflow, SQL injection, or cross-site scripting)
+  * Full paths of source file(s) related to the manifestation of the issue
+  * The location of the affected source code (tag/branch/commit or direct URL)
+  * Any special configuration required to reproduce the issue
+  * Step-by-step instructions to reproduce the issue
+  * Proof-of-concept or exploit code (if possible)
+  * Impact of the issue, including how an attacker might exploit the issue
+
+This information will help us triage your report more quickly.
+
+## Policy
+
+See [GitHub's Safe Harbor Policy](https://docs.github.com/en/github/site-policy/github-bug-bounty-program-legal-safe-harbor#1-safe-harbor-terms)

SUPPORT.md

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+# Support
+
+## How to file issues and get help
+
+This project uses GitHub issues to track bugs and feature requests. Please search the existing issues before filing new issues to avoid duplicates. For new issues, file your bug or feature request as a new issue.
+
+This project is not actively developed but is maintained by GitHub staff **AND THE COMMUNITY**. We will do our best to respond to support and community questions in a timely manner.
+
+## GitHub Support Policy
+
+Support for this project is limited to the resources listed above.