Environment variables in an Angular app are extremely useful for storing constants in your app that need to be used frequently, such as API url's, API access keys, Firebase config values and other general flags.

How to Use Environment Variables in An Angular App

An HTTP interceptor is a piece of logic that is able to attach to a HTTP request or response. This logic can then modify the data being transferred.

How to setup an Angular HTTP Interceptor

A quick how-to guide to adding Rollbar cloud error logging to your Ionic app with Angular

Adding Rollbar Error Tracking to Ionic + Angular

A quick how-to guide for adding Firebase into an Ionic application using Angular

How to Use Environment Variables in An Angular App

How to setup an Angular HTTP Interceptor

Adding Rollbar Error Tracking to Ionic + Angular

Integrating Firebase with Ionic + Angular