Why

The reason is simple, to prevent the user from deploying to Heroku then realizing they forgot to add some new environment variables, as a result the app will crash. So, in order to prevent this, we can add a check to make sure the environment variables are set before we deploy to Heroku with this GitHub action.

Usage

Given you have a file called configs.js with the following content, and you add one more environment variable called MY_VARIABLE. Then you forget to add this variable in your Heroku environment variables.

module.exports = {
  AWS_ACCESS_KEY_ID: "obviously_not_set",
  AWS_SECRET_ACCESS_KEY: "aHR0cHM6Ly95b3V0dS5iZS9kUXc0dzlXZ1hjUQ==",
  AWS_REGION: "eu-west-1",
  AWS_BUCKET: "nova core",
+ MY_VARIABLE: "my value"
};

Example workflow

name: Check Heroku Environment Variables

on:
  pull_request:
    branches: ["**"]

jobs:
  check-env-vars-with-heroku:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout Repo
        uses: actions/checkout@v3
      - name: Setup Node.js
        uses: actions/setup-node@v3
        with:
          node-version: 16.x
      - name: Validate variables
        uses: FottyM/heroku-configs-check@v1.4.0
        with:
          heroku-app-name: ${{ secrets.HEROKU_APP_NAME }}
          heroku-api-key: ${{ secrets.HEROKU_API_KEY }}
          config-path: ./configs.js # This can be `.ts` as well.

Configs

• heroku-app-name(required): The name of the Heroku app you want to deploy to.
• heroku-api-key(required): The Heroku API key you want to use to deploy to the Heroku app.
• config-path(required): The full path from the root of your project.