varz

varz

A fork of env-cmd with diffrent defaults

A simple node program for executing commands using a package.json config.

💾 Install

npm install varz or npm install -g varz

⌨️ Basic Usage

Package.json

{
  "config": {
    "varz": {
      "dev": {
        "ENV1": "THANKS",
        "ENV2": "FOR ALL",
        "ENV3": "THE FISH"
      }
    }
  },
  "scripts": {
    "test": "varz -e dev \"mocha -R spec\""
  }
}

📜 Help

Usage: _ [options] <command> [...args]

Options:
  -v, --version                       output the version number
  -e, --environments [env1,env2,...]  The rc file environment(s) to use
  -f, --file [path]                   Custom env file path (default path: ./.env)
  --fallback                          Fallback to default env file path, if custom env file path not found
  --no-override                       Do not override existing environment variables
  -r, --rc-file [path]                Custom rc file path (default path: ./.varzrc(|.js|.json)
  --silent                            Ignore any varz errors and only fail on executed program failure.
  --use-shell                         Execute the command in a new shell with the given environment (true by default)
  --verbose                           Print helpful debugging information
  -x, --expand-envs                   Replace $var in args and command with environment variables
  -h, --help                          output usage information

🛠 API Usage

EnvCmd

A function that executes a given command in a new child process with the given environment and options

• options { object }
  • command { string }: The command to execute (node, mocha, ...)
  • commandArgs { string[] }: List of arguments to pass to the command (['-R', 'Spec'])
  • envFile { object }
    • filePath { string }: Custom path to .env file to read from (defaults to: ./.env)
    • fallback { boolean }: Should fall back to default ./.env file if custom path does not exist
  • rc { object }
    • environments { string[] }: List of environment to read from the .rc file
    • filePath { string }: Custom path to the .rc file (defaults to: ./.varzrc(|.js|.json))
  • options { object }
    • expandEnvs { boolean }: Expand $var values passed to commandArgs (default: false)
    • noOverride { boolean }: Prevent .env file vars from overriding existing process.env vars (default: false)
    • silent { boolean }: Ignore any errors thrown by varz, used to ignore missing file errors (default: false)
    • useShell { boolean }: Runs command inside a new shell instance (default: true)
    • verbose { boolean }: Prints extra debug logs to console.info (default: false)
  • Returns { Promise<object> }: key is env var name and value is the env var value

GetEnvVars

A function that parses environment variables from a .env or a .rc file

• options { object }
  • envFile { object }
    • filePath { string }: Custom path to .env file to read from (defaults to: ./.env)
    • fallback { boolean }: Should fall back to default ./.env file if custom path does not exist
  • rc { object }
    • environments { string[] }: List of environment to read from the .rc file
    • filePath { string }: Custom path to the .rc file (defaults to: ./.varzrc(|.js|.json))
  • verbose { boolean }: Prints extra debug logs to console.info (default: false)
• Returns { Promise<object> }: key is env var name and value is the env var value

🧙 Why

Because sometimes it is just too cumbersome passing a lot of environment variables to scripts. It is usually just easier to have a file with all the vars in them, especially for development and testing.

🚨Do not commit sensitive environment data to a public git repo! 🚨

🧬 Related Projects

env-cmd - Executes a command using the environment variables in an env file cross-env - Cross platform setting of environment scripts

🎊 Special Thanks

Special thanks to env-cmd and cross-env for inspiration (uses the same cross-spawn lib underneath too).

📋 Contributing Guide

I welcome all pull requests. Please make sure you add appropriate test cases for any features added. Before opening a PR please make sure to run the following scripts:

• npm run lint checks for code errors and format according to ts-standard
• npm test make sure all tests pass
• npm run test-cover make sure the coverage has not decreased from current master