title: Using azure app service application setting variables in reactjs typescript app returning undefined
body: <p>I have an app service with Node.js runtime stack serving a ReactJs Typescript application. I have some API URLS in the application setting. I have tried to access them in ReactJs components using process.env.REACT_APP_URL however it returns me undefined. I have defined the application setting as seen in this <a href="https://i.stack.imgur.com/vGmU6.png" rel="nofollow noreferrer">screenshot</a></p>
  
  <p><a href="https://i.stack.imgur.com/vGmU6.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/vGmU6.png" alt="enter image description here"></a></p>
  
  <p>I have a similar separate application with same Node.js runtime stack just for the Backend APIS. I have dome the same in that using process.env to access the application settings and it works in that app. But in the ReactJs Typescripts its says undefined. Please let me know how the application setting environmental variables can be used in app service for ReactJs served through Node.JS. </p>