feat(instant): Heap middleware and first tracking events

packages/instant/src/util/analytics.ts

@@ -0,0 +1,35 @@
+import { ObjectMap } from '@0x/types';
+import { logUtils } from '@0x/utils';
+
+import { HeapAnalytics, heapUtil } from './heap';
+
+export class Analytics {
+    public static init(): Analytics {
+        return new Analytics();
+    }
+    public track(eventName: string, eventProperties?: ObjectMap<string | number>): void {
+        console.log('HEAP: tracking', eventName, eventProperties);
+        this._evaluteHeapCall(heap => heap.track(eventName, eventProperties));
+    }
+    public addUserProperties(properties: ObjectMap<string | number>): void {
+        console.log('HEAP: adding user properties', properties);
+        this._evaluteHeapCall(heap => heap.addUserProperties(properties));
+    }
+    public addEventProperties(properties: ObjectMap<string | number>): void {
+        this._evaluteHeapCall(heap => heap.addEventProperties(properties));
+    }
+    private _evaluteHeapCall(heapFunctionCall: (heap: HeapAnalytics) => void): void {
+        const curHeap = heapUtil.getHeap();
+        if (curHeap) {
+            try {
+                heapFunctionCall(curHeap);
+            } catch (e) {
+                // We never want analytics to crash our React component
+                // TODO: error reporter here
+                logUtils.log('Analytics error', e);
+            }
+        }
+    }
+}
+
+export const analytics = Analytics.init();