feat: add native logging with headers and body to CloudEvent

Signed-off-by: Grant Timmerman <timmerman+devrel@google.com>

src/event/cloudevent.ts

@@ -9,6 +9,7 @@ import { Emitter } from "..";
 import { CloudEventV1, CloudEventV1Attributes, CloudEventV1OptionalAttributes } from "./interfaces";
 import { validateCloudEvent } from "./spec";
 import { ValidationError, isBinary, asBase64, isValidType } from "./validation";
+import * as util from 'util';
 
 /**
  * An enum representing the CloudEvent specification version
@@ -195,4 +196,11 @@ See: https://github.com/cloudevents/spec/blob/v1.0/spec.md#type-system`);
   ): CloudEvent {
     return new CloudEvent(Object.assign({}, this.toJSON(), options) as CloudEvent, strict);
   }
+
+  /**
+   * The native `console.log` value of the CloudEvent.
+   */
+  [util.inspect.custom](depth: any, opts: any) {
+    return this.toString();
+  }
 }

test/integration/cloud_event_test.ts

@@ -55,6 +55,11 @@ describe("A CloudEvent", () => {
     expect(new CloudEvent(JSON.parse(JSON.stringify(ce)))).to.deep.equal(ce);
   });
 
+  it("serializes as JSON with raw log", () => {
+    const ce = new CloudEvent({ ...fixture, data: { lunch: "tacos" } });
+    expect(ce.toString()).to.deep.equal(JSON.stringify(ce));
+  });
+
   it("Throw a validation error for invalid extension names", () => {
     expect(() => {
       new CloudEvent({ "ext-1": "extension1", ...fixture });