src: fix type of collectDefaultMetrics.metricsList

Fixes #583

Author: zbjornson

CHANGELOG.md

@@ -13,6 +13,7 @@ project adheres to [Semantic Versioning](http://semver.org/).
 
 - remove unnecessary loop from `osMemoryHeapLinux`
 - Improve performance of `hashObject` by using pre-sorted array of label names
+- Fix type of `collectDefaultMetrics.metricsList`
 
 ### Added
 

index.d.ts

@@ -750,20 +750,17 @@ export interface DefaultMetricsCollectorConfiguration<
 	labels?: Object;
 }
 
-/**
- * Configure default metrics
- * @param config Configuration object for default metrics collector
- */
-export function collectDefaultMetrics<T extends RegistryContentType>(
-	config?: DefaultMetricsCollectorConfiguration<T>,
-): void;
-
-export interface defaultMetrics {
+export const collectDefaultMetrics: {
 	/**
-	 * All available default metrics
+	 * Configure default metrics
+	 * @param config Configuration object for default metrics collector
 	 */
+	<T extends RegistryContentType>(
+		config?: DefaultMetricsCollectorConfiguration<T>,
+	): void;
+	/** All available default metrics */
 	metricsList: string[];
-}
+};
 
 /**
  * Validate a metric name