Envcloak

Envcloak is a utility package that is used to change values of environment varialbles temporarily for testing and restore the original values after thing done.

Installation

Via npm:

npm install --save-dev envcloak

API

Declaration

var Envcloak = require('envcloak');

Constructor

var envcloak = new Envcloak(kwargs);

The constructor (Envcloak) receives an options that contains a map of key/values (presets) that will be used to override the corresponding environment variables in process.env. It backs up the current environment variables before overriding. These backed up values will be recovered when reset() method is invoked.

Example:

var envbox = new Envcloak({
  presets: {
    APP_BUILT_VERSION: '0.1.2',
    NODE_ENV: 'beta'
  }
});

Methods

envcloak.setup(vars)

The argument vars is an object that contains key/values which defined the name of variable and a new value of it, as illustrated by the following example:

{
  APP_INSTANCES: 2,
  NODE_ENV: 'test'
}

This method returns the envcloak object itself.

envcloak.reset()

Method reset() clears the values of environment variables that assigned by setup() method, and restores the backup values for them. This method also returns the envcloak object itself.

envcloak.toJSON()

Method toJSON() returns a JSON object that contains the internal state of envcloak.

License

MIT