Ensured trackRequests was set properly. Fixed the assert about not ch…

…anging tracked requests after pretender is created

lib/mock-server/pretender-config.js

@@ -65,9 +65,11 @@ export default class PretenderConfig {
 
   mirageServer;
 
+  trackRequests;
+
   create(mirageServer, config) {
     this.mirageServer = mirageServer;
-    this.pretender = this._create(mirageServer);
+    this.pretender = this._create(mirageServer, config);
 
     /**
      Mirage uses [pretender.js](https://github.com/trek/pretender) as its xhttp interceptor. In your Mirage config, `this.pretender` refers to the actual Pretender instance, so any config options that work there will work here as well.
@@ -129,7 +131,7 @@ export default class PretenderConfig {
     }
 
     let didOverridePretenderConfig =
-      config.trackRequests !== undefined && this.pretender;
+        config.trackRequests !== undefined && config.trackRequests !== this.trackRequests;
     assert(
       !didOverridePretenderConfig,
       "You cannot modify Pretender's request tracking once the server is created"
@@ -233,8 +235,9 @@ export default class PretenderConfig {
    * @return {Object} A new Pretender instance.
    * @public
    */
-  _create(mirageServer) {
+  _create(mirageServer, config) {
     if (typeof window !== "undefined") {
+      this.trackRequests = config.trackRequests || false;
       return new Pretender(
         function () {
           this.passthroughRequest = function (verb, path, request) {
@@ -316,7 +319,7 @@ export default class PretenderConfig {
             );
           };
         },
-        { trackRequests: mirageServer.shouldTrackRequests() }
+        { trackRequests: this.trackRequests }
       );
     }
   }

lib/server.js

@@ -386,18 +386,6 @@ export default class Server {
     return typeof this.logging !== "undefined" ? this.logging : !this.isTest();
   }
 
-  /**
-   * Determines if the server should track requests.
-   *
-   * @method shouldTrackRequests
-   * @return The value of this.trackRequests if defined, false otherwise.
-   * @public
-   * @hide
-   */
-  shouldTrackRequests() {
-    return Boolean(this.trackRequests);
-  }
-
   /**
    * Load the configuration given, setting timing to 0 if in the test
    * environment.