cazoo-toggles v1.0.2

Toggles

Simple wrapper on top of environment variables to standardise feature toggling.

This is a universal package for both the browser and node. In the browser the feature toggles can be overriden via localStorage.

At this point this package is more about estabilishing a convention rather being super useful. In the future this can be extended with pluggable Providers, like cookies or any service that stores key-value pairs.

Installation

npm install cazoo-toggles --save

Basic usage

Given:

process.env = {
    FEATURE_LASER: 'on',
    FEATURE_DEATH_STAR: 'off'
}

Then:

import toggles from 'cazoo-toggles';

const { featureIsEnabled } = toggles.create();

...

if (featureIsEnabled('LASER')) {
    // use laser
} else {
    // don't use laser
}

On the client side, i.e. in the browser you can then override the feature flag by setting the same key in localStorage.

In console:

localStorage.setItem('FEATURE_DEATH_STAR', 'on');