Moving stored metrics type definition to types file

Author: Alan Churley

packages/metrics/src/Metrics.ts

@@ -1,10 +1,12 @@
 import { MetricsInterface } from '.';
 import { ConfigServiceInterface, EnvironmentVariablesService } from './config';
+
 import {
   DecoratorOptions,
   Dimensions,
   EmfOutput,
   HandlerMethodDecorator,
+  StoredMetrics,
   MetricsOptions,
   MetricUnit,
   MetricUnits
@@ -24,7 +26,7 @@ class Metrics implements MetricsInterface {
   private metadata: { [key: string]: string } = {};
   private namespace?: string;
   private raiseOnEmptyMetrics: boolean = false;
-  private storedMetrics:{ [key: string]: { name: string; unit: MetricUnit; value: number } } = {};
+  private storedMetrics: StoredMetrics = {};
 
   public constructor(options: MetricsOptions = {}) {
     this.dimensions = {};

packages/metrics/types/Metrics.ts

@@ -34,10 +34,21 @@ type DecoratorOptions = {
   captureColdStartMetric?: boolean
 };
 
+type StoredMetric = {
+  name: string
+  unit: MetricUnit
+  value: number
+};
+
+type StoredMetrics = {
+  [key: string]: StoredMetric
+};
+
 export {
   DecoratorOptions,
   Dimensions,
   EmfOutput,
+  HandlerMethodDecorator,
   MetricsOptions,
-  HandlerMethodDecorator
+  StoredMetrics
 };