specify default Config for the Registry (#95)

Author: copperlight

package.json

@@ -1,6 +1,6 @@
 {
   "name": "nflx-spectator",
-  "version": "3.0.3",
+  "version": "3.0.4",
   "license": "Apache-2.0",
   "homepage": "https://github.com/Netflix/spectator-js",
   "author": "Netflix Telemetry Engineering <netflix-atlas@googlegroups.com>",

src/registry.ts

@@ -25,7 +25,7 @@ export class Registry {
     private _config: Config;
     private readonly _writer: WriterUnion;
 
-    constructor(config: Config) {
+    constructor(config: Config = new Config()) {
         this._config = config;
         this.logger = config.logger;
         this._writer = new_writer(this._config.location, this.logger);

test/registry.test.ts

@@ -15,7 +15,7 @@ import {
     PercentileDistributionSummary,
     PercentileTimer,
     Registry,
-    Timer
+    Timer, UdpWriter
 } from "../src/index.js";
 import {describe, it} from "node:test";
 
@@ -32,6 +32,11 @@ describe("Registry Tests", (): void => {
         assert.isTrue(writer.is_empty());
     });
 
+    it("default config", (): void => {
+        const r = new Registry();
+        assert.isTrue(r.writer() instanceof UdpWriter);
+    });
+
     it("age_gauge", (): void => {
         const r = new Registry(new Config("memory"));
         const writer = r.writer() as MemoryWriter;