An environment variable is a variable who's value is set from outside the program. This variable is made up of a key/value pair that can be accessed simply by importing the variable from source file of your React Native App. In some cases, such as in React, the variable doesn't need to be imported at all.

What is environment variable in react?

In short: environment variables

When working with React, environment variables are variables that are available through a global process. env Object. That global Object is provided by your environment through NodeJs. And because we don't have NodeJs in the browser, we're going to need webpack.

What is env file in react native?

env file in a React Native Application. Using environment file to configure most critical variables like api keys, is the most common practice done in most react, react native, Laravel applications etc.