feat: 🎸 increase default limit and add new size property

README.md

@@ -135,7 +135,7 @@ Configure options for the new instance of MetricsHistory.
 ##### options.limit?
 
 Type: `integer`
-Default: `10`
+Default: `60`
 
 FIFO size of array for calculating percentile.
 

src/MetricsHistory.mjs

@@ -1,14 +1,18 @@
 import { Observer } from '@esmj/observable';
 
 export class MetricsHistory extends Observer {
-  #options = { limit: 10 };
+  #options = { limit: 60 };
   #history = [];
 
   constructor(options) {
     super();
     this.#options = { ...this.#options, ...options };
   }
 
+  get size() {
+    return this.#history.length;
+  }
+
   complete() {
     this.#history = [];
   }

src/__tests__/MetricsHistorySpec.mjs

@@ -70,5 +70,6 @@ describe('MetricsHistory', () => {
     expect(percentile25).toMatchInlineSnapshot(`4`);
     expect(percentile20).toMatchInlineSnapshot(`2.6000000000000005`);
     expect(percentile0).toMatchInlineSnapshot(`1`);
+    expect(metricsHistory.size).toEqual(6);
   });
 });