remove global export from SmartInterval

app/assets/javascripts/smart_interval.js

@@ -3,7 +3,7 @@
  * and controllable by a public API.
  */
 
-class SmartInterval {
+export default class SmartInterval {
   /**
    * @param { function } opts.callback Function to be called on each iteration (required)
    * @param { milliseconds } opts.startingInterval `currentInterval` is set to this initially
@@ -168,4 +168,3 @@ class SmartInterval {
   }
 }
 
-window.gl.SmartInterval = SmartInterval;

app/assets/javascripts/vue_merge_request_widget/mr_widget_options.js

+import SmartInterval from '~/smart_interval';
 import Flash from '../flash';
 import {
   WidgetHeader,
@@ -97,7 +98,7 @@ export default {
         });
     },
     initPolling() {
-      this.pollingInterval = new gl.SmartInterval({
+      this.pollingInterval = new SmartInterval({
         callback: this.checkStatus,
         startingInterval: 10000,
         maxInterval: 30000,
@@ -106,7 +107,7 @@ export default {
       });
     },
     initDeploymentsPolling() {
-      this.deploymentsInterval = new gl.SmartInterval({
+      this.deploymentsInterval = new SmartInterval({
         callback: this.fetchDeployments,
         startingInterval: 30000,
         maxInterval: 120000,

spec/javascripts/vue_mr_widget/mr_widget_options_spec.js

@@ -121,24 +121,28 @@ describe('mrWidgetOptions', () => {
 
     describe('initPolling', () => {
       it('should call SmartInterval', () => {
-        spyOn(gl, 'SmartInterval').and.returnValue({
-          resume() {},
-          stopTimer() {},
-        });
+        spyOn(vm, 'checkStatus').and.returnValue(Promise.resolve());
+        jasmine.clock().install();
         vm.initPolling();
 
+        expect(vm.checkStatus).not.toHaveBeenCalled();
+
+        jasmine.clock().tick(10000);
+
         expect(vm.pollingInterval).toBeDefined();
-        expect(gl.SmartInterval).toHaveBeenCalled();
+        expect(vm.checkStatus).toHaveBeenCalled();
+
+        jasmine.clock().uninstall();
       });
     });
 
     describe('initDeploymentsPolling', () => {
       it('should call SmartInterval', () => {
-        spyOn(gl, 'SmartInterval');
+        spyOn(vm, 'fetchDeployments').and.returnValue(Promise.resolve());
         vm.initDeploymentsPolling();
 
         expect(vm.deploymentsInterval).toBeDefined();
-        expect(gl.SmartInterval).toHaveBeenCalled();
+        expect(vm.fetchDeployments).toHaveBeenCalled();
       });
     });