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    sync-dotenv
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    2.7.0 • Public • Published

    sync ⚙️ dotenv

    Keep your .env in sync with .env.example

    Travis (.org) Coveralls github

    Motivation

    Projects often rely on environmental variables stored in a .env file to run... and because these variables sometimes contain sensitive data, we never add them to source control. Instead, these variables are added e.g. to a .env.example file so it's easy to get the project running for other developers. However, it's very easy to forget to update this file when a variable is added/updated in .env (during development). This can make it difficult for devs to get the project running (locally) because they rely on .env.example file to setup their environment (with their own configs).

    Enter sync-dotenv 🔥

    Description

    sync-dotenv automates the process of keeping your .env in sync with .env.example.

    Installation

    $ npm install -g sync-dotenv

    Install as a dev dependency (recommended)

    $ npm install -D sync-dotenv

    Usage

    By default, sync-dotenv looks for a .env in your working directory and attempt to sync with .env.example when no argument is provided. Failure to find these files will cause the sync to fail.

    $ sync-dotenv
    

    Alternatively, you can use the --env and --sample flag to specify the source and destination file.

    $ sync-dotenv --env foo/.env --sample bar/.env.example
    

    Also, in the situation where you want to keep multiple files in sync with one source env file you can make use of the --samples flag specifying a globbing pattern to match:

    $ sync-dotenv --env foo/.env --samples "env-samples/*"
    
    # note: glob pattern should be provided as a string as shown above

    For CLI options, use the --help flag

    $ sync-dotenv --help
    

    Examples

    Sync (with .env.example) before every commit using husky

    // package.json
    {
      "scripts": {
        "env": "sync-dotenv"
      },
      "husky": {
        "hooks": {
          "pre-commit": "npm run env",
        }
      }
    }

    Or with file other than .env.example

    {
      "scripts": {
    -    "env": "sync-dotenv"
    +    "env": "sync-dotenv --sample .env.development"
      }
    }

    Preserving variables in sample env

    Sometimes you need to preserve certain variables in your example env file, you can optionally allow this by adding a sync-dotenv config in package.json like so

    // package.json
    "scripts": {
      ...
    },
    "sync-dotenv": {
      "preserve": ["CHANNEL"]
    }

    Avoid comments or empty lines in sample env

    You might not want to copy empty lines or comments to your sample env, in this case you can still use sync-dotenv config in package.json with the following:

    // package.json
    "scripts": {
      ...
    },
    "sync-dotenv": {
      "emptyLines": true,
      "comments": false
    }

    Note that you can still combine those options with preserve.

    Related

    • parse-dotenv - zero dependency .env to javascript object parser

    Contributors

    Thanks goes to these wonderful people (emoji key):

    Luqman Olushi O.
    Luqman Olushi O.

    💻 📖 🚧 📦 ⚠️
    Bolaji Olajide
    Bolaji Olajide

    💻
    Kizito Akhilome
    Kizito Akhilome

    💻 ⚠️ 📖

    This project follows the all-contributors specification. Contributions of any kind welcome!

    License

    This project is licensed under MIT

    Install

    npm i sync-dotenv

    DownloadsWeekly Downloads

    8,784

    Version

    2.7.0

    License

    MIT

    Unpacked Size

    28.4 kB

    Total Files

    7

    Last publish

    Collaborators

    • codeshifu