IO-2632 Add basic instance manager functions & editor config.

server/utils/instanceMgr.js

@@ -0,0 +1,34 @@
+/**
+ * Returns the corresponding component/function/object based on the type of instance.
+ * Based on the node env params, return the correct prop.
+ * Default is to return the ImEX Prop
+ * @typedef {Object} InstanceManagerObject
+ * @property { string | object | function } rome  Return this prop if Rome.
+ * @property { string | object | function } proman Return this prop if Rome.
+ * @property { string | object | function } imex  Return this prop if Rome.
+ */
+
+function InstanceManager({ rome, proman, imex }) {
+    let propToReturn = null;
+
+    switch (process.env.INSTANCE) {
+        case "IMEX":
+            propToReturn = imex;
+            break;
+        case "ROME":
+            propToReturn = rome;
+            break;
+        case "PROMANAGER":
+            propToReturn = proman;
+            break;
+        default:
+            propToReturn = imex;
+            break;
+    }
+    if (!propToReturn) {
+        throw new Error(
+            `Prop to return is not valid for this instance (${process.env.INSTANCE}).`
+        );
+    }
+    return propToReturn;
+}