src holds all controllers, config and api

src/config/environmentVariables.js

@@ -0,0 +1,16 @@
+class EnvironmentVariables {
+
+  constructor(variables) {
+    this.variables = variables || process.env;
+  }
+
+  get(variable) {
+    return this.variables[variable];
+  }
+
+  has(variable) {
+    return this.get(variable) !== undefined;
+  }
+}
+
+module.exports = EnvironmentVariables;