feat: Convert projectConfig module to TS (#653)

* WIP

* WIP Initial conversion with all unit tests pass

* WIP

* WIP

* Define more intefaces

* Define the rest of interfaces

* Clean up

* Clean up

* Incorporate comments

Author: yavorona

packages/optimizely-sdk/lib/core/bucketer/index.ts

@@ -23,7 +23,9 @@ import { LogHandler } from '@optimizely/js-sdk-logging';
 import {
   DecisionResponse,
   Experiment,
-  Variation
+  Variation,
+  TrafficAllocation,
+  Group,
 } from '../../shared_types';
 
 import {
@@ -38,17 +40,6 @@ const MAX_TRAFFIC_VALUE = 10000;
 const MODULE_NAME = 'BUCKETER';
 const RANDOM_POLICY = 'random';
 
-interface TrafficAllocation {
-  entityId: string;
-  endOfRange: number;
-}
-
-interface Group {
-  id: string;
-  policy: string;
-  trafficAllocation: TrafficAllocation[];
-}
-
 interface BucketerParams {
   experimentId: string;
   experimentKey: string;